Clinical and morphological parallels in pregnancy complicated by polyhydramnios

Despite the significant breakthrough of obstetric science and practice in the second half of the 20th century and the beginning of the 21st century, the introduction of innovative methods, the rapid development of the pharmacological  industry,  the  problem  of  obstetric  bleeding  remains  one  of  the  most  urgent  problems  of obstetrics  [2,5,7].  Of  the  550-600  thousand  maternal  deaths,  about  200,000  die  from  obstetric  bleeding. Bleeding is in the leading positions among the so-called "big five" causes of maternal mortality [1,3,9,10] At the  same  time,  125  thousand  women  die  due  to  massive  obstetric  bleeding,  almost  half  die from  uterine hypotension. The main reasons for the development of hypo and atonic bleeding may be the insufficiency of myometrial retraction and thrombosis in the vessels of the placental site, which has from 150 to 200 spiral arteries [4,5]