Subject of the inquiry: 298 patients with finn deformations of the larynx and trachea
Aim of the inquiry: early rehabilitation of patients with firm deformations of the larynx and trachea path optimization and creating clinical and pathogenic methods of complex treatment.
Methods of the inquiry: clinical examination, special examination: LOR-examination, endoscopy of air ways, X-ray, CT, MRI of larynx, trachea and bronchus, bacterial examination of larynx and trachea wounds; morphological examination, biochemical methods of examination: lipid peroxidation, antioxidant enzymes, activity of hepatic monooxygenase system (MOS); biophysical methods of examination: исследование electric damage of erythrocytes’ membrane (EDEM), blood viscosity (BV) and blood shift velocity (BSV); cytological examination.
The results achieved and their novelty: In patients with firm deformations of the larynx and trachea, firstly basing on complex investigation clinical and structural-functional parameters revealed pathomorphological changes in neck tissues as chronic inflammation with productive component. Despite, revealed disrupt balance of process lipid peroxidation and antioxidant system, hydroxylic function of liver, decrease of electoral penetrability of erythrocytes’ membrane and aggravate of hemorheology. With this, level of expression of changes depends on clinic form and load disease, correlate with stage of wound healing and after restore of functions of the larynx and trachea gradually becoming normal. Presented classification of the firm deformations of the larynx and trachea, permitting complexly counting etiologic factor and morphological variant of the damage of laryngotracheal tract. In scheme of the pathogenic complex conservative therapy before and after reconstructive operations included medicine, influencing on Hemodynamic, with ability membranotrope action, systemic enzymotherapy, immunostimulators, and correction of the tissue metabolism by laser. Created private and modified methods of reconstructive laryngotracheoplasty in case of cicatricle stenosis of glottic and subglottic parts, bilateral paralyses of the larynx, cicatricle deformations of pharyngolarynx, combination deformations and defects of the larynx and trachea, permitting single stage restore laryngotracheal ways.
Practical value: The investigation of pathogenic mechanism of developing of the firm deformations of the larynx and trachea on data of changes of main functional and metabolic processes will permit not only activating and improving of pathogenic therapy, and forecasting variant of development and course of postoperative period after reconstructive operations.
Use of proposed methods of complex conservative and surgical treatment of the firm deformations of the larynx and trachea allowed to provide whole volume of restoring means in more short time and with less quantity of stage operations, preoperative preparing till 3 days, hospital stay till 14-20 days, surgical operations in 1.9 time.
Degree of embed and economical effectivity: The results of investigation intruded in treatment practice of the First and Second Tashkent Medical Institutes, LOR-clinics of Samarqand territorial children hospital, territorial hospital of Karshi. Materials of the investigation using in study process of LOR - cathedra First Tashkent Medical Institutes during lectures and practice tutorials with students, magistracies, and clinic ordinators. Determined main economic effect in use of proposed complex therapy in connection with reduce of term of treatment and hospital stay (on an average 10 days) and taking off or decreased disability on 67% patients.
Sphere of usage: otorhinolaryngology, surgery, reanimation
This scientific article endeavors to delve into and draw comparisons between the linguistic and cultural elements of advertising texts in both Uzbek and English languages. This study thoroughly examines and analyzes diverse linguistic and cultural characteristics embedded within advertisements, with a particular emphasis on their influence on target audiences within distinct cultural contexts. Through meticulous examination and interpretation, this research sheds light on the intricate interplay between language, culture, and advertising strategies, ultimately offering valuable insights for enhancing cross-cultural advertising communication. By employing a systematic research approach, the study explores the multifaceted dimensions of advertising language in both Uzbek and English. It investigates how language choices, rhetorical devices, and persuasive techniques are adapted and employed differently across these two languages to effectively convey messages to their respective audiences. Additionally, the research delves into the cultural aspects manifested within these advertisements, such as values, symbols, and societal norms, which greatly impact the effectiveness and reception of the advertisements within their target cultures.
This scientific article endeavors to delve into and draw comparisons between the linguistic and cultural elements of advertising texts in both Uzbek and English languages. This study thoroughly examines and analyzes diverse linguistic and cultural characteristics embedded within advertisements, with a particular emphasis on their influence on target audiences within distinct cultural contexts. Through meticulous examination and interpretation, this research sheds light on the intricate interplay between language, culture, and advertising strategies, ultimately offering valuable insights for enhancing cross-cultural advertising communication. By employing a systematic research approach, the study explores the multifaceted dimensions of advertising language in both Uzbek and English. It investigates how language choices, rhetorical devices, and persuasive techniques are adapted and employed differently across these two languages to effectively convey messages to their respective audiences. Additionally, the research delves into the cultural aspects manifested within these advertisements, such as values, symbols, and societal norms, which greatly impact the effectiveness and reception of the advertisements within their target cultures.
In the textual studies of the peoples of the world, attention to the study of national literary heritage based on primary sources is growing stronger than ever. The study of manuscript sources makes it possible to restore the texts of the works of a poet or writer in accordance with the original (at least close to it), regardless of the period in which they lived. Without restoring a reliable text, the poet's work cannot be analyzed in terms of theoretical problems of literary studies. In world textology, research is being conducted on such scientific problems as comparative analysis of manuscript sources, creating a scientific biography of the creator, and studying the history of the text of an artistic work. Among them, a great deal of experience, knowledge and material has been collected within the framework of studying the sources of Eastern manuscripts spread throughout the world's libraries, including the works of Alisher Navoi and Babur, great figures of Turkish literature. Extensive research is the basis for the creation of the theoretical foundations of textual studies. Uzbek textology has progressed on the basis of existing scientific experiences and has achieved certain results in the study of classic literary sources. Researching the literary heritage of authors who have left a bright mark in the history of national literature, studying manuscript and lithographic sources based on the latest scientific achievements is one of the primary tasks of source studies and textual studies. After all, "...studying and promoting Uzbek classic and modern literature at the international level, analyzing this multifaceted topic in integral connection with the most important processes taking place in the world's literary space today, creating the necessary scientific - drawing practical conclusions is of great importance..." 1 . Accordingly, it becomes clear that it is urgent to carry out a scientific monographic study of the sources of the lyric divan of Khorezm literary environment representative Mutrib Khonakharob (1853-1923), study the textual history of the poet's works, and develop the principles of preparing a scientific and critical text. The study of Mutrib's work began during the poet's lifetime. Tabibiy recognizes the achievements of the poet in poetry and music in the collections "Majmuat ush-shuaroyi payravi Feruzshahi" and "Majmuat mukhammasot ush-shuaroyi Feruzshahi". "Biographies of poets and writers of Khiva" by Hasanmurad Laffasi, "Poets and singers of Khorezm" by Bobojon Tarroh, "Tazkirayi Qayyumiy" by Polatjon Qayyumiy also provide valuable information about the poet's work. O. Sharafiddinov, M. Yunusov, N.M. Mallayev, Yu. Yusupov, M. Pirnazarov, A. Abdugafurov published articles. These articles cover the biography of the poet, the ideological scope and artistry of his works, thematic and genre features of his literary heritage. But in most of them, the poet's works were interpreted under the influence of communist ideology. M. Pirnazarov studied manuscript and lithographic sources of Mutrib's lyrical heritage, subject scope, genre features, and artistic skills. Although this research provided valuable information for its time, problems such as creating a scientific biography of the poet, researching the author's works in the field of theoretical problems of textual studies, and creating a scientific-critical text are still waiting to be solved. In studying the poet's literary heritage, the book "Mutrib Khonaharobi (Ref. Collection)" is noteworthy. However, besides the fact that the text of these poems is not complete, there are also errors in the reading of words. In this tutorial, the manuscripts numbered 906/VII, 903/IV, 2679/II of the Department of Muhammad Hasan Mutrib kept in the main and H. Sulayman funds of the Academy of Sciences of the Republic of Uzbekistan, as well as Turkish manuscripts in bayoz, complex and tazkira poems, information about the poems in manuscript bayoz kept in Khiva Ichonqala Muhammad Rahimkhan Feruz II Museum.
The purpose of the study is to determine the significance of genetic factors in the development of chronic nephritic syndrome in children and to clarify the features of the clinical course
The оbject of research were 129 children aged 4-15 years who were treated for chronic nephritis in the nephrology department of the Samarkand Regional Multidisciplinary Paediatric Medical Centre.
The scientific novelty of the study is as follows:it has been established that the severity of chronic nephritic syndrome in children is associated with clinical manifestations (gradual development, dyspepsia, abdominal pain) and an increase in the amount of Cystatin C in the blood;for the first time, it was revealed that the development of sclerotic lesions due to increased proliferation in patients with the presence of the MMP-9 (A-8202G) rs 11697325 genotypes in chronic nephritic syndrome leads to a worsening of the clinical course of the disease; established early diagnostic marker MMP-9 (A-8202G) rs 11697325 and its tissue inhibitor TIMP-2 (C536T) rs 11551797 in chronic nephritic syndrome in children in the diagnosis of the disease; for the first time, the prognostic value of the alleles of the MMP-9 (A-8202G) rs 11697325 genes and the homozygous G/G genotype in determining the risk of developing the disease in children with chronic nephritic syndrome has been proven.
Implementation of the research results. Based on scientific results of evaluation of the role of polymorphic genes of matrix metalloproteinase and its tissue inhibitors in chronic nephritic syndrome in children: methodological recommendation “The role of polymorphic genes of matrix metalloproteinase and its genetic inhibitors in the development of chronic nephritic syndrome in children” was developed and approved (reference of the Ministry of Health of the Republic of Uzbekistan No. 8n-r / 554 of 30.02.2022).
This methodological recommendation made it possible to predict the development of chronic nephritic syndrome in children and improve preventive measures; approved and developed on the basis of scientific results of research on early diagnosis and prognosis of chronic nephritic syndrome “Dynamics of clinical and laboratory parameters in nephritic syndrome in children”, (reference of the Ministry of Health of the Republic of Uzbekistan No. 8n-r / 555 of 30.02.2022).
This methodological recommendation made it possible to optimize the diagnosis and treatment tactics for various forms of nephritic syndrome in children;
The results obtained were implemented in the practice of health care, in particular, in the Republican Children's National Medical Center, in the 1st clinic of the Samarkand State Medical University, in the Samarkand Regional Children's Multidisciplinary Medical Center (conclusion No. 8 n-r/324 of 21.06.2022 of the Ministry of Health of Uzbekistan).
The application of the obtained results to practice has made it possible to reduce the frequency of recurrence of the disease in children, prevent complications of the disease, improve the quality of life of patients, diagnose and prevent the disease.
The structure and scope of the dissertation. The dissertation consists of an introduction, 4 chapters, conclusions, practical recommendations. The volume of the dissertation is 120 pages.
The aim of the study is to improving the quality of treatment of ventral hernias in patients with morbid obesity by improving the tactical and technical aspects and optimizing the choice of hernioplasty method.
The object of the study were 121 patients with ventral hernias and morbid obesity who were hospitalized in the surgical department of the 1st clinic of the Samarkand State Medical University in the period from 2012 to 2021.
The scientific novelty of the study is as follows: a method was developed for preoperative preparation of patients with ventral hernia and morbid obesity using a modified pneumatic belt-bandage to adapt the cardiovascular and respiratory systems to intra-abdominal hypertension after hernioplasty; improved technical aspects of the reconstruction of the anterior abdominal wall in patients with morbid obesity; the surgical instrument "retractor" has been improved for technical optimization of the stage of suturing the anterior abdominal wall for fixing the prosthesis in patients with concomitant obesity and abdominal ptosis; clarified clinical and instrumental criteria for the specific unification of the scale for assessing the quality of life of patients after hernioplasty and abdominoplasty for ventral hernias and morbid obesity with differentiation of the value of physical, mental and social daily activity. The practical results of the study are as follows: According to the results of a scientific study to improve the diagnosis and surgical treatment of patients with ventral hernias and morbid obesity: improved "retractor". The use of the proposed tool made it possible to level the technical difficulties in fixing the prosthesis against the background of severe overweight with a reduction in the operation time; developed guidelines "Technical aspects of hernioplasty for ventral hernias in patients with morbid obesity" (certificate of the Ministry of Health 8n-r / 905 dated October 12, 2021), "Criteria for the choice of surgical treatment of patients with ventral hernias and obesity" (certificate of the Ministry of Health 8n-r /906 dated October 12, 2021). The proposed recommendations made it possible to optimize the choice of tactics for surgical treatment of patients with ventral hernias and morbid obesity; the obtained scientific results on improving the quality of diagnosis and surgical treatment of patients with ventral hernias and morbid obesity have been introduced into the practice of health care, in particular, in the departments of surgery of the 1st clinic of the Samarkand State Medical Institute, the Jizzakh Regional Multidisciplinary Medical Center and the Sh. Rashidov District Medical Association of the Jizzakh region (certificate of the Ministry of Health 8n-z / 368 dated October 22, 2021). The implementation of research results by improving the tactical and technical aspects of the surgical treatment of patients with ventral hernias and morbid obesity made it possible to reduce the overall incidence of postoperative complications from 14.8% to 8.9%, including wound complications from 11.1% to 4.5% and extra-abdominal from 7.4% to 4.5%, as well as significantly reduce the duration of surgical treatment and rehabilitation periods after various types of hernioplasty and abdominoplasty. The structure and scope of the dissertation. The dissertation consists of an introduction, five chapters, a conclusion, conclusions, practical recommendations and a list of cited literature. The volume of the text material is 107 pages.
In Uzbek poetry of the independence period, which is a legitimate part of world literature, special attention is paid to the generalization of scientific theoretical views on the creative worldview and creative philosophy of the socio historical period, the artistic perception of reality in poetry and the study of artistic realization. The intensification of the desire for the deep artistic development of the human spiritual world in the poetry of the independence period is associated with the renewal of the period, the historical environment and the artistic thinking of the creators themselves. The harmony of poetry and literary-aesthetic views is a direct result of the synthesis of the principles of creative phenomenon, personality, perception of the world, which is reflected in the author's "I". Image poetics plays an important role in revealing the creative concept and uniting it into a common denominator. The perfection of the product of artistic thinking as a synthesized system is determined by the level of creative thinking and talent. The work of Amir Khudoiberdi is one of such events in the history of national artistic thought, and in the works of the poet created in different genres, he expresses the life, dreams and will of the people in different socio-historical periods. The poet's tendency to create a holistic artistic history of the Uzbek people in the twentieth century is explained by the vast opportunities provided by independence, the end of ideological monopoly, the restoration of national values, the renewal of literary and aesthetic views, the translation of world literature into Uzbek. The transition from the depiction of things to the depiction of ideas has changed the content of artistic creation, while enriching the formal, semantic scale of artistic research.
Close acquaintance with world poetry has long served as one of the important factors in the renewal of our national literature, separated from its spiritual sources- religious and mystical literature, classical and modern literature. The content of the themes of emotional literature is characterized by a focus on the person, not directly on reality. The synthesis of world literary traditions can be seen in the works of Fakhriyor, Ulugbek Hamdam, Bahrom Ruzimuhammad, Farida Afroz, Nodira Afokova, Zebo Mirzaeva, Khosiyat Rustamova, Gozal Begim. Amir Khudoiberdi is also one of the poets of this literary generation who has his own creative credo and works in various genres. Any national literature manifests itself as a systematic, evolving stable phenomenon only in the harmony of different ideologies, styles, views, approaches, ideas, and even contradictions. Only then can it be a true metaphorical representation of being. Amir Khudoiberdi is one of the new generation of artists who lived in a complex and controversial period and saw and understood the subjective approaches to the literature of the Soviet era. A comprehensive scientific study of the creative style, individuality and mastery in the poetry of the independence period on the example of the work of a poet, the generalization of scientific and theoretical views on the poetry of this period gives important conclusions, this scientific research is the product of such a necessary need. In Uzbek literature, the works of Amir Khudoiberdi have not yet been comprehensively studied. The study of the poet’s work is also important in determining the influence, position, and place of local artists in literature. Also, the issue of art and literature, which is one of the means of spiritual and educational environment, education and their formation in our country, has always been in the forefront. Therefore, as the President of Uzbekistan Sh.M.Mirziyoev said: “...attention to literature and art, culture is first of all attention to our people, attention to our future, as our great poet Cholpon said, we have no right to forget that literature, culture and nation can live ”. This fact also determines the relevance of the topic.
Accordingly, this study is based on the Decree of the President of the Republic of Uzbekistan dated February 7, 2017 No. PF-4947 "On the Strategy for further development of the Republic of Uzbekistan", dated September 13, 2017 No. PQ- 3271 "Development of the system of publishing and distribution of books. to a certain extent in the implementation of the tasks set out in the Resolution "On a comprehensive program of measures to improve and promote the culture of reading and reading" and other regulations related to this activity.
Target. То study the structure of nosology, demonstrated by the syndrome of recurrent vomiting, for timely assistance in primary health care. Materials and methods. The study included 176 sick children with recurrent vomiting symptoms. Verification of clinical diagnoses were carried out based on clinical, laboratory and instrumental research methods, including: clinical anamnestic methods,biochemical blood analysis, ultrasound examination, EGDS, X-ray contrast method for the study of the gastrointestinal tract.
Result. The symptom of recurrent vomiting in preschool children, regardless of the sex of patients, occurs most often in functional and organic diseases of the gastrointestinal tract (83.5%), in metabolic disorders - in 14.2% and in pathology of the central system - in 2.27 % of cases.
Conclusion. The most common causes of vomiting in children are diseases of the gastrointestinal tract (GIT), both functional and organic. Vomiting can also be caused by both congenital metabolic defects and endocrine disorders.
The study examined the effectiveness of complex methods of ultrasound diagnostics using elastography in assessing the prevalence of cervical cancer (CC). This article presents the results of a complex ultrasound examination using elastography of 42 women aged 32-73 years. (average age is 52.1 years). Examination of the pelvic organs included a transabdominal examination (B-mode) followed by a transvaginal approach using the compression elastography technique.
In modern abdominal surgery, one of the current areas for research continues to be the improvement of various options for plastic surgery of postoperative hernias. More than 2,100,000 operations for ventral hernia are performed annually in the world, and 42% of them are postoperative hernias. In recent years, there has been a clear trend toward the expanded use of various types of biological meshes in hernioplasty. “A pooled analysis of seven PCSTAR studies for incisional hernias using retromuscular mesh showed a hernia recurrence rate of 5.7%”[1]. The use of standard surgical interventions such as alloplasty in the onlay position does not solve the problem of early postoperative complications: seroma discharge, mesh migration, adhesive disease, high frequency of hernia recurrence, etc. At the same time, hernia repair with local tissue creates the problem of increased intra-abdominal pressure and late complications in the form of recurrent hernias. “An increase in postoperative intra-abdominal pressure leads to multiple organ failure, then abdominal compartment syndrome, and even death.” [2]. Currently, there is no consensus on the surgical approach for giant postoperative abdominal wall hernias, and therefore the need to continue to develop new technologies and improve There is no doubt about the tactics. In world practice, at present, the most relevant studies continue to be studies aimed at studying the morphological and functional aspects of recurrent postoperative ventral hernias; electron microscopy reveals ultrastructural destructive changes in skin cells, aponeurosis and muscles, which indicates morphofunctional insufficiency of abdominal wall tissues; issues of cell engineering are discussed new innovative materials, experimental studies are being carried out on animals testing the biotechnical properties, texture and elasticity of new polymers, research is being conducted on open approaches with division of the posterior component with the release of the transverse abdominis muscle and a retrograde mesh, robotic operations have begun. Modern aspects of the development of domestic healthcare include many measures aimed at improving the results of treatment of patients with postoperative ventral hernias and associated pathological conditions through the introduction of modern principles of intensive care and surgical tactics. The development strategy of New Uzbekistan for 2022-2026 in seven priority areas includes tasks to improve the quality of provision of qualified medical services to the population[3]. The implementation of these tasks, including by optimizing tactical and technical approaches to the choice of hernioplasty method, as well as the development of methods for the prevention of purulent-inflammatory complications in the field of alloplastic material, is one of the current areas of abdominal surgery and medicine in general, due to the high medical and social the significance of this pathology.
This dissertation research to a certain extent serves to fulfill the tasks approved by the Decree of the President of the Republic of Uzbekistan “On comprehensive measures to radically improve the healthcare system of the Republic of Uzbekistan” No. UP-5590 dated December 17, 2018, the Resolutions of the President of the Republic of Uzbekistan “On measures to transform the surgical service, improving the quality and expanding the scale of surgical operations in the regions" for No. PP-5254 dated October 4, 2021 and "On additional measures to ensure public health by further increasing the efficiency of medical prevention work" for No. PP-4891 dated November 12, 2020, and as well as other regulatory documents adopted in this area. Compliance of the research with the priority directions of development of science and technology of the republic. The dissertation research was carried out in accordance with the priority direction of development of science and technology of the VI Republic “Medicine and Pharmacology”. Review of foreign scientific research on the topic of the dissertation.[4] Research work aimed at improving the quality of therapeutic and preventive care for patients with ventral hernias, carried out by many leading scientific centers and higher educational institutions in the world, including the Department of Surgical and Perioperative Sciences, Umeå University, Umeå (Sweden), Department of Surgery, Kingston General Hospital, 76 Stuart Street, Kingston (Sweden). nada), Department of Surgery, Helsinki University Hospital, Helsinki ( Finland), Service de chirurgie digestive et oncologique, CHU d'Amiens (France), Department of Biostatistics and Epidemiology, University of Oklahoma Health Sciences Center, Tulsa (USA), Department of Surgery, Howard University College of Medicine, Washington (USA) , Yong Loo Lin School of Medicine, National University of Singapore (Singapore), Department of Surgery, Michigan Medicine, Ann Arbor, MI, USA; University of Calgary, Calgary (Canada), Division of Plastic Surgery, Perelman School of Medicine at the University of Pennsylvania, University of Pennsylvania Health System, Philadelphia (USA), Brigham and Women's/Faulkner Hospital, Harvard Medical School, Boston (USA) , Department of Surgical Sciences, Uppsala University Hospital, Uppsala (Sweden), Department of Surgery, University of Texas Health Sciences Center at Houston, Houston (USA), Department of Surgery, Erasmus University Medical Center Rotterdam, Rotterdam (Netherlands), Department of Preventive Medicine and Public Health, Faculty of Medicine, Fukuoka University, Fukuoka (Japan), National Medical Research Center for Surgery named after A.V. Vishnevsky" (Russia), Republican Scientific Center for Emergency Medical Care (Uzbekistan), Tashkent Medical Academy (Uzbekistan), Republican Specialized Scientific and Practical Medical Center for Surgery named after Academician V. Vakhidov (Uzbekistan).
As a result of studies conducted around the world to increase the effectiveness of alloplasty for postoperative ventral hernias and reduce the risk of complications in the postoperative period, a number of scientific results were obtained, including: it was determined that patients who underwent reconstruction of the abdominal wall have an increased risk of postoperative respiratory failure, understanding the epidemiology of this complication can improve prevention (the Division of Plastic and Reconstructive Surgery, Department of Surgery, Oregon Health & Science University, USA); It has been proven that the larger the hernia, the higher the risk of early surgical complications, including such as respiratory decompensation, since hernias often increase in size over time, delaying surgery can lead to an increase in the size of the hernia and, therefore, a greater risk of complications (CentreforDigestiveDiseases, KarolinskaUniversityHospital, Stockholm, Sweden); it has been shown that the ratio of the hernia volume to the volume of the abdominal cavity <20% is an independent factor in tension-free closure, which justifies the interest in preoperative volumetry to adapt the tactics of surgical care (Servicedechirurgiegénérale, digestiveetendocrinienne, CHU LyonSud, HospicescivilsdeLyon, France); It has been determined that in patients undergoing elective laparoscopic hernia repair, predictors of mortality are older age and certain concomitant diseases: congestive heart failure, pulmonary circulatory disorders, coagulopathy, liver disease, metastatic cancer, neurological disorders and paralysis (Department of Surgery, College of Medicine, University of Oklahoma, Tulsa , USA); Older age, ascites, preoperative renal and pulmonary insufficiency have been found to be independent predictors of 30-day mortality, and in the presence of these risk factors, conservative treatment should be seriously considered (Department of Surgery, University of Kentucky College of Medicine, Lexington, USA); The American College of Surgeons (ACS) Universal Surgical Risk Calculator has been shown to accurately predict thirty-day outcomes, including major complications: venous thromboembolism, medical morbidity, surgical site infection, unplanned reoperation, mortality, and length of hospital stay (Department of Plastic Surgery, Brown University and Rhode Island Hospital, Providence, USA). At the present time in the world, the most relevant research in surgery continues to be the development of new methods of hernioplasty for large and giant ventral hernias, each of which has its own pros and cons depending on the complexity of implementation, the risk of postoperative complications and relapse, large randomized clinical trials are being conducted, comparing existing methods of traditional hernioplasty with laparoscopic access and robotic surgery, which has become increasingly widespread in the last 10 years, a search is being made for new synthetic and biological materials developed for the production and use of composite meshes that have the necessary strength and the ability to prevent fatal local complications in a contaminated environment. However, despite technical advances in this field, no modern hernia repair method or prosthesis meets all the requirements. One of the key problems is that existing synthetic endoprostheses do not have sufficient elasticity, resistance to infection, high mechanical strength and integrity over a long period of time. Further research into these clinical aspects will undoubtedly improve the current understanding of the capabilities of biocompatible endoprostheses and will make it possible to develop an optimal method for their placement during allohernioplasty. The degree of knowledge of the problem. The current period of development of abdominal surgery is characterized by an emphasis on the problems of the effectiveness of introducing new installation methods and techniques for attaching bioprostheses, options for various suture materials to determine the most promising directions for the development of these technologies [5]. Researchers led by BittnerR.[6] (2019) state that a giant postoperative abdominal wall hernia, the maximum diameter of which exceeds 12 cm or the ratio of the volume of the hernial sac to the abdominal cavity more than 20%, is difficult to treat, with a high recurrence rate and a large number of complications. One of the most challenging problems is that after the hernia contents return to the abdominal cavity, postoperative intra-abdominal pressure will increase, leading to multiple organ failure, then abdominal compartment syndrome (ACS), and even death. There is currently no agreement on the surgical approach for these giant incisional abdominal wall hernias. To prevent recurrences, some articles recommend placing the hernia mesh in the sublayer position and or linings (KirkpatrickAW.)[7]. According to CornetteB.[8], to prevent recurrence, it is recommended to place the hernia mesh in a sublayer or underlay position, and to achieve better mesh expansion, a component separation technique (CST) may be a suitable solution, but with a significant risk of complications and recurrence. JensenKK, et al. believe that truly successful giant hernia repair requires effective bridging or augmentation that will prevent recurrence with an acceptable risk of complications[9]. Another pressing issue in abdominal surgery is that patients with incisional hernias are extremely difficult to treat due to a number of factors including obesity, previous hernia repair, previous mesh placement, domain loss, and other variables.
The approach to patients with incisional hernias has changed significantly over the past 20 years due to both advances in mesh technology and surgical approaches. Key factors for successful outcome include modification of risk factors preoperatively, such as smoking cessation and weight loss, selection of mesh appropriate for the type of hernia and planned mesh location, and wide mesh coverage beyond the hernia defect. New techniques such as transabdominal muscle release and component separation with retrograde mesh placement and robotic approaches to abdominal wall hernia are increasingly being used in these patients[10]. Recent years have seen an increase in the number of biological meshes available for abdominal wall hernia repair. Biological meshes typically consist of materials obtained from humans, pigs, or cattle. The rationale for using biological meshes is that they can act as a scaffold for the growth of natural tissues. In addition, there are absorbable synthetic meshes that have properties similar to those of biological meshes, but with theoretically less risk because they are not derived from animal or human material. The choice of mesh for a ventral hernia depends on many factors, which include both the properties of the mesh and its location, for example, whether it should be placed intraperitoneally, preperitoneally, or retrorectus. BaierKF[11](2021) believes that the guiding principle should be to avoid placing uncoated polypropylene mesh in an intraperitoneal location where it may be in direct contact with internal organs. In addition, the type of hernia defect is another risk factor, such as whether the wound is clean or dirty, and whether the repair is performed with a bridge or abutment. Lightweight or biologic meshes to bridge the defect should be avoided due to increased recurrence rates. Holihan JL [12] (2016), Hodgkinson JD [13] (2018) believe that the principle of anatomical restoration to achieve a reliable, tension-free repair with reinforced mesh reduces the incidence of early postoperative complications and late recurrence of hernia compared with bridging mesh. The analysis of the literature concerning the theoretical aspects and clinical experience of using technologies for improving modern synthetic and biological prostheses that can provide a better plastic effect, as well as methods for preventing recurrence of ventral hernias, indicates that this is one of the priority areas in modern abdominal surgery. An unresolved issue remains the choice of the optimal endoprosthesis, which is highly effective and meets international standards for such properties as biological inertness and mechanical strength, as well as the method of positioning the mesh in relation to the layers of the abdominal wall. Considering that many of the allohernioplasty methods used today are not without drawbacks, the current direction is the development of new methods of repair for giant ventral hernias and methods for the prevention of postoperative complications in conditions of a contaminated wound, with justification of their effectiveness in a clinical experimental study. The connection between the dissertation research and the research plans of the research institution where the dissertation was completed. The dissertation research was carried out within the framework of the research work plan of the State Institution “RSNPMCH named after. acad. V. Vakhidov" under the project AL-422105574 "Development of new biocompatible mesh implants made of composite materials for reconstructive surgery of abdominal and diaphragmatic hernias" (2022-2024).
The purpose of the study is to improve the results of surgical treatment of large and giant postoperative ventral hernias by introducing new laser technologies and improving the tactical and technical aspects of surgical treatment. Objectives of the study: to study the structure of immediate complications after various types of prosthetic plastic surgery; to clarify the influence of obesity factors, primary or repeat hernioplasty on the incidence of immediate and long-term complications; to evaluate the role of the immediate complicated course of the postoperative period in the incidence of long-term complications of hernioplasty; to improve the technical aspects of alloplasty for large and giant postoperative ventral hernias (POVH); to improve the technique of photodynamic therapy (PDT) of the wound surface after prosthetic plastic surgery; to study in an experiment the effectiveness of using the proposed technique of alloplasty and PDT; evaluate the morphological features of the condition of tissues during prosthetic plastic surgery using the proposed method; in a comparative aspect, evaluate the clinical effectiveness of the proposed alloplasty options in the immediate and long-term periods. The object of the study was the results of allohernioplasty in 448 patients with extensive (large) and giant POVH, who were operated on at the surgical department of the 1st clinic of the Samarkand State Medical Institute in the period from 2012 to 2021, as well as experimental animals on which the effectiveness was assessed developed a technique for prosthetic repair of postoperative ventral hernias and applied the technique of photodynamic therapy.
The subject of the study is to analyze the effectiveness of the developed alloplasty of postoperative ventral hernias and intraoperative photodynamic therapy in abdominal surgery in experiments and in the clinic. Research methods. To achieve the goal of the study and solve the assigned problems, general clinical, instrumental, biotechnological, experimental, histomorphological, microbiological and statistical research methods were used. The scientific novelty of the study is as follows: it was established that the need for extensive tissue mobilization and, as a consequence, the intersection of lymphatic capillaries during implantation of the prosthesis in the onlay position, as well as the lack of sufficient resorption function of the hernial sac in the inlay position causes a high risk of the formation of clinically significant seromas; It was determined that with prosthetic hernioplasty, along with the volume of the defect, the type of plastic surgery and the degree of obesity, the most significant predictor of the risk of developing immediate complications is the factor of re-intervention in case of recurrent hernia with the presence of a “dormant infection” hidden in the remaining ligature granulomas or scar tissue; the structure and clinical features of the course of long-term complications of hernioplasty for giant and extensive hernias were clarified, taking into account the results of the immediate postoperative period, as well as the option of fixing the prosthesis, primary or repeated hernioplasty and the degree of obesity; the method of surgery for large hernias of the anterior abdominal wall has been improved, characterized by a combination of factors such as the formation of tension-free prosthetic repair, preservation of local resorptive function to prevent the development of fluid accumulations and reducing the risk of infection; the method of preventing the development or progression of wound infection during alloplasty of ventral hernias has been improved, aimed at enhancing the antibacterial effect and stimulating reparative activity through the photosensitizing and photodynamic effect of low-energy laser radiation; It was determined in an experimental model of prosthetic plastic surgery that the proposed method of fixing the prosthesis in combination with the use of the effect of photodynamic therapy through laser radiation helps to enhance reparative processes with a reduced risk of wound complications; It has been proven that all methods of antiseptic exposure and laser stimulation of the wound surface after prosthetic plastic surgery enhance preventive measures against the development of local infection, but are ineffective in the case of an already developed purulent-inflammatory process against the background of the use of alloplastic material. The practical results of the study are as follows: it has been determined that the implantation of synthetic materials for giant and extensive hernias is accompanied by a significant number of wound complications caused by both the surgical technique itself and the reaction of surrounding tissues to a foreign body, requiring improvement of tactical and technical approaches when performing hernioplasty; it was clarified that scar-degenerative changes in the tissues of the aponeurosis in giant and extensive hernias are a predisposing factor to the occurrence of post-prosthetic hernias, especially when implanting the prosthesis in the “inlay” position and, accordingly, require increasing the efficiency of their fixation and engraftment, as well as reducing the risk of developing local complications; it was determined based on the data of an experimental study that the proposed method of alloplasty for large ventral hernias makes it possible to achieve adequate reconstruction of the anterior abdominal wall, reduce the incidence of infection in the wound, and also use a smaller size of prosthetic material; it was determined that the proposed method of tension-free repair of large hernias of the anterior abdominal wall with strengthening of the aponeurosis with a mesh implant allows maintaining physiology, reducing the number of complications, shortening treatment time and reducing the risk of hernia recurrence; It has been determined that the proposed method for preventing the development or progression of wound infection during alloplasty of ventral hernias can reduce the frequency of suppuration, shorten the treatment time and the likelihood of relapse; It has been proven that the use of the proposed tactical and technical aspects of prosthetic repair for postoperative ventral hernias can reduce the incidence of specific complications, reduce rehabilitation time and the risk of hernia recurrence. Reliability of the research results. The reliability of the results is justified by the use of objective criteria for assessing the condition of patients, modern methods of diagnosis and treatment, the correct application of methodological approaches and sets of statistical analysis, methods for solving the problems discussed in the dissertation are based on modern scientific and practical concepts and approaches to the diagnosis and surgical treatment of patients with giant postoperative hernias. Scientific and practical significance of the research results. The results obtained make a significant contribution to the expansion of irradiation of existing ideas about the structure and clinical features of complications of hernioplasty for giant and extensive ventral hernias by identifying the morphological features of the development of a purulent-inflammatory process against the background of the use of alloplastic material, studying predictors of the risk of developing immediate complications, mechanisms for enhancing reparative processes through the use of an improved method of fixing the prosthesis in together using the effect of photodynamic therapy through laser radiation, which made it possible to enhance the antibacterial effect and improve the wound healing process. The practical significance of the study is that, based on the results obtained, the tactical and technical aspects of prosthetic hernioplasty have been optimized, the features of methods of antiseptic exposure and laser stimulation of the wound surface after prosthetic repair have been revealed, enhancing preventive measures for the development of local infection, and the method of surgery for large anterior abdominal hernias has been improved walls, characterized by a combination of factors such as the formation of tension-free prosthetic plasty, preservation of local resorptive function to prevent the development of fluid accumulations, thereby reducing the risk of developing postoperative complications, reducing the frequency of unsatisfactory results, length of hospitalization and the likelihood of relapse. Implementation of research results. According to the results of a scientific study to optimize the tactical and technical aspects of surgical treatment of large and giant postoperative ventral hernias: the “method for plastic surgery of giant hernias of the anterior abdominal wall” has been improved (invention patent No. IAP 2022 0148 dated April 18, 2022). The proposed method of tension-free repair of large hernias of the anterior abdominal wall with strengthening of the aponeurosis with a mesh implant made it possible to reduce the number of complications, shorten the treatment time and reduce the risk of hernia recurrence; the “method for preventing the progression of infection during alloplasty of infected hernias” has been improved (certificate of the Ministry of Health No. 08-32071 dated October 17, 2022). The proposed method made it possible to reduce the frequency of wound purulent-inflammatory complications and shorten the period of rehabilitation of patients after allohernioplasty; methodological recommendations “Tactical and technical aspects of prosthetic repair for large and giant postoperative ventral hernias” have been developed (certificate of the Ministry of Health No. 08-32071 dated October 17, 2022) . The developed recommendations made it possible to optimize the tactical and technical aspects of allohernioplasty in patients with large and giant postoperative ventral hernias; The scientific results obtained were introduced into the practical activities of healthcare, in particular, in the departments of surgery of the Khorezm and Andijan regional multidisciplinary medical centers, the clinic of the Samarkand State Medical University (certificate of the Ministry of Health No. 08-32071 dated October 17, 2022). Improving the tactical and technical aspects of prosthetic repair for postoperative ventral hernias has made it possible to reduce the incidence of specific immediate complications from 40.9% to 15.6%, to reduce rehabilitation time from 8.6±2.7 to 7.1±1.5 days, and also reduce the likelihood of long-term complications from 11.7% to 3.1%. Approbation of research results. The results of this study were discussed at 8 scientific and practical conferences, including 5 international and 3 republican ones. Publication of research results. 26 scientific works have been published on the topic of the dissertation, including 9 journal articles, 4 of which in republican and 5 in foreign journals recommended by the Higher Attestation Commission of the Republic of Uzbekistan for publication of the main scientific results of doctoral dissertations. Structure and scope of the dissertation. The dissertation consists of an introduction, seven chapters, a conclusion, conclusions, practical recommendations and a list of cited literature. The volume of work is 200 pages.