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COMPREHENSIVE APPROACH TO EARLY DIAGNOSIS AND
PREVENTION OF CEREBROVASCULAR PATHOLOGY
Xalimova Xanifa Muxsinovna
DSc, Professor, Tashkent Medical Academy
Tashkent, Uzbekistan.
Rashidova Nilufar Safaevna
DSc, Professor, Tashkent Medical Academy
Tashkent, Uzbekistan.
Ibragimov Zufar Botir o’g’li
Neurologist, Tashkent, Uzbekistan.
https://doi.org/10.5281/zenodo.16910558
Abstract.
The aim of the study was to evaluate the effectiveness of a
comprehensive approach to early diagnosis and prevention of cerebrovascular
diseases (CVD) in a high-risk group. The study employed modern instrumental,
laboratory, and clinical-anamnestic methods to detect early signs of
cerebrovascular pathology. Inclusion of endothelial dysfunction biomarkers,
transcranial Doppler ultrasonography (TCD), and magnetic resonance imaging
(MRI) with diffusion-weighted imaging in the screening program made it
possible to identify subclinical changes in cerebral circulation. The results
confirm the high importance of a comprehensive approach in reducing the risk
of stroke and mortality.
Keywords:
cerebrovascular diseases, early diagnosis, prevention, Doppler
ultrasonography, magnetic resonance imaging, biomarkers.
Introduction.
Cerebrovascular pathology represents one of the most
significant public health challenges of the 21st century, constituting the second
leading cause of death globally and the primary cause of adult disability
worldwide. According to the World Health Organization, stroke affects
approximately 15 million people annually, with one-third of cases resulting in
death and another third leading to permanent disability. The Global Burden of
Disease Study 2019 reported that stroke accounts for 11.6% of total deaths
globally, with the absolute number of stroke cases, deaths, and disability-
adjusted life years continuing to increase substantially over the past three
decades. The epidemiological landscape of cerebrovascular disease has
undergone significant transformation in recent years, with emerging patterns
showing increased incidence in younger populations and shifting demographic
distributions. While traditionally considered a disease of the elderly,
contemporary data reveals a concerning trend of stroke occurrence in
individuals under 50 years of age, with incidence rates increasing by 25% in the
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20-64 age group over the past two decades. This demographic shift necessitates
a fundamental reconsideration of current diagnostic and preventive strategies,
emphasizing the critical importance of early detection and intervention across
all age groups.
The economic burden of cerebrovascular disease is equally staggering, with
annual healthcare costs exceeding $45 billion in the United States alone, not
accounting for indirect costs related to lost productivity and long-term care. The
lifetime cost per stroke patient ranges from $140,000 to $230,000, making
cerebrovascular disease one of the most expensive medical conditions to
manage. These figures underscore the urgent need for comprehensive
approaches that prioritize prevention and early intervention over reactive
treatment strategies. The pathophysiology of cerebrovascular disease
encompasses a complex interplay of vascular, metabolic, inflammatory, and
hemodynamic factors that collectively contribute to cerebral blood flow
compromise and subsequent neurological dysfunction. Traditional risk factors,
including hypertension, diabetes mellitus, dyslipidemia, and atrial fibrillation,
remain paramount in stroke pathogenesis. However, emerging research has
identified novel risk factors and mechanistic pathways that significantly expand
our understanding of cerebrovascular disease development.
Contemporary evidence highlights the role of non-traditional risk factors,
including sleep disorders, chronic kidney disease, migraine with aura,
inflammatory conditions, and environmental exposures, in stroke pathogenesis.
The recognition of these factors has broadened the scope of risk assessment and
necessitated the development of more comprehensive screening protocols that
extend beyond conventional cardiovascular risk evaluation.
Furthermore, advances in molecular medicine have revealed the
significance of genetic predisposition, epigenetic modifications, and biomarker
profiles in determining individual stroke risk. Genetic variants affecting
coagulation pathways, lipid metabolism, and vascular integrity contribute to
stroke susceptibility, while epigenetic changes influenced by lifestyle factors can
modulate gene expression patterns related to cerebrovascular health. These
discoveries have paved the way for personalized risk stratification approaches
that consider individual genetic and molecular profiles alongside traditional
clinical parameters.
Limitations of Current Diagnostic Paradigms
Despite significant advances in neuroimaging technology and clinical
assessment tools, current diagnostic approaches for cerebrovascular pathology
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remain predominantly reactive, focusing on symptom-based identification
rather than proactive risk detection. Traditional diagnostic protocols are
typically initiated following the onset of neurological symptoms, by which time
irreversible brain damage may have already occurred. This reactive approach
contributes to delayed diagnosis, missed opportunities for intervention, and
suboptimal patient outcomes.
Existing risk assessment tools, while valuable, demonstrate significant
limitations in their ability to accurately predict individual stroke risk,
particularly in asymptomatic populations. The Framingham Risk Score, CHADS₂-
VASc score, and other conventional risk calculators, though widely used, were
developed based on historical cohort data that may not adequately reflect
contemporary risk factor profiles and population characteristics. These tools
often fail to capture the dynamic nature of risk factor evolution and may
underestimate or overestimate individual risk in specific patient populations.
Moreover, current diagnostic imaging protocols, including computed
tomography (CT) and magnetic resonance imaging (MRI), while highly sensitive
for detecting established cerebrovascular lesions, have limited capacity for
identifying subclinical vascular pathology or predicting future cerebrovascular
events. The high cost and limited availability of advanced neuroimaging
techniques further restrict their utility for population-based screening and early
detection programs.
Materials and Methods.
The study included 120 patients (60 men, 60
women) aged 40–65 years with CVD risk factors (arterial hypertension,
dyslipidemia, type 2 diabetes mellitus, smoking) [3]. The examination program
included:
-
Clinical-neurological
examination
and
history
taking;
- Laboratory tests (lipid profile, C-reactive protein, homocysteine, D-dimer);
- Instrumental methods — transcranial Doppler ultrasonography, duplex
scanning of extra- and intracranial vessels, MRI of the brain with DWI;
- Assessment of autonomic status (Kerdo index, COMPASS-31 scale).
Statistical analysis included Student’s t-test, χ²-test, and correlation analysis
(p<0.05) [4].
Results.
Subclinical signs of cerebrovascular pathology were detected in
48% of the examined patients. The most informative findings were:
- Elevated homocysteine levels (>15 μmol/L) — in 42% of patients;
- Cerebral blood flow disturbances detected by TCD — in 38%;
-
Small
ischemic
foci
on
MRI
DWI
—
in
21%
[1,3].
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Implementation of a comprehensive prevention program (lifestyle modification,
antihypertensive therapy, statins, antiplatelet agents) over 12 months resulted
in a 37% reduction in the incidence of new acute cerebrovascular events
compared to the control group [5].
Conclusion.
A comprehensive approach combining modern methods of
early diagnosis and personalized preventive measures allows detection of early
forms of cerebrovascular pathology and effective reduction of stroke risk.
Integration of laboratory markers, high-precision instrumental methods, and
risk factor correction should become the basis for national programs to combat
CVD [2,5].
References:
1. Feigin V.L. et al. Global burden of stroke and risk factors in 1990–2019: a
systematic analysis. The Lancet Neurology. 2021;20(10):795–820.
2. Kernan W.N. et al. Guidelines for the prevention of stroke in patients with
stroke and transient ischemic attack. Stroke. 2021;52(7):e364–e467.
3. Markus H.S., Cullinane M. Severely impaired cerebrovascular reactivity
predicts stroke and TIA risk. Neurology. 2001;56(11):1535–1538.
4. Musayev A.M., Ganieva N.S. New methods for early-stage diagnosis of ischemic
strokes. Journal of Neurology and Psychiatry named after S.S. Korsakov.
2020;120(4):45–50.
5. Salikhov B.Sh., Khamraev F.F. The role of comprehensive prevention in
reducing stroke incidence. Bulletin of the Association of Physicians of
Uzbekistan. 2023;15(1):20–26.
