FETOPLACENTAL INSUFFICIENCY IN PREGNANT WOMEN LIVING IN HIGH-ALTITUDE CONDITIONS ON THE BACKGROUND OF ARTERIAL HYPOTENSION

2021 ◽  
Vol 1 (5) ◽  
pp. 104-110
Author(s):  
Aida Imankulovna Subanova
Author(s):  
Padma Dolma ◽  
P. T. Angchuk ◽  
Vandana Jain ◽  
Vatsla Dadhwal ◽  
Dalvir Kular ◽  
...  

Abstract Background States which reduce foetal oxygen delivery are associated with impaired intrauterine growth. Hypoxia results when barometric pressure falls with ascent to altitude, and with it the partial pressure of inspired oxygen (‘hypobaric hypoxia’). birthweight is reduced when native lowlanders gestate at such high altitude (HA)—an effect mitigated in native (millennia) HA populations. Studying HA populations offer a route to explore the mechanisms by which hypoxia impacts foetal growth. Methods Between February 2017 and January 2019, we prospectively studied 316 pregnant women, in Leh, Ladakh (altitude 3524 m, where oxygen partial pressure is reduced by 1/3) and 101 pregnant women living in Delhi (low altitude, 216 m above sea level). Results Of Ladakhi HA newborns, 14% were small for gestational age (<10th birthweight centile) vs 19% of newborn at low altitude. At HA, increased maternal body mass index, age, and uterine artery (UtA) diameter were positively associated with growth >10th weight centile. Conclusions This study showed that Ladakhi offspring birthweight is relatively spared from the expected adverse HA effects. Furthermore, maternal body composition and greater UtA size may be physiological HA adaptations and warrant further study, as they offer potential mechanisms to overcome hypoxia-related growth issues. Impact Reduced foetal oxygen delivery seen in native lowlanders who gestate at HA causes foetal growth restriction—an effect thought to be mitigated in native HA populations. We found that greater maternal body mass and UtA diameter were associated with increased offspring birthweight in a (Ladakh) HA population. This supports a role for them as physiological mediators of adaptation and provides insights into potential mechanisms that may treat hypoxia-related growth issues.


2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Xiaoyan Zhou ◽  
Hong Yan ◽  
Yuan Xing ◽  
Shaonong Dang ◽  
Bianba Zhuoma ◽  
...  

2012 ◽  
Vol 19 (02) ◽  
pp. 155-158
Author(s):  
SAEED SIDDIQUI ◽  
ATIF SITWAT HAYAT ◽  
M. KHALID SIDDIQUI ◽  
Naila Atif ◽  
Hamayun Shah

Objectives: To estimate the frequency of iron deficiency anemia in a sample of population of pregnant women residingpermanently at high altitude of ≥5000 feet in different areas of district Abbottabad. Study Design: Cross sectional Study. Place & duration ofStudy: Northern Institute of Medical Sciences Abbottabad: From 17 August 2009 to 15 June 2010. Subjects and Methods: This study wascarried out on hundred pregnant women residing permanently at an altitude of ≥5000 feet above sea level in district Abbottabad. The agerange was fixed to 15-45 (child bearing age ) years. Suspected study participants having anemia were tested for iron status by serum ferritintest. Pregnant women having both anemia and iron deficiency were labeled as patients of Iron deficiency anemia. Results: The age range was15-41 years with a mean of + / - SD of 28.13 + / - 6.61. All women were of low and middle socioeconomic class with 74 % illiteracy. 60 % of womenhad birth spacing of two or less than two years. 64 % of pregnant women had three children. Anemia was detected in 74 % (X2 =9.42 p > 0.05),iron deficiency in 66 % (X2 = 14.76 p <0.01) and iron deficiency anemia in 60 % (X2 = 13.56 p < 0.01). Conclusions: High altitude residentpregnant women remain at high risk of developing iron deficiency anemia because of illiteracy, poverty and ignorance. With adequate nutritionand health education the problem can be addressed effectively.


2017 ◽  
Vol 11 (4) ◽  
pp. 233-239
Author(s):  
Evgeniy N. Degtyarev ◽  
Y. M Shifman ◽  
G. P Tikhova

Arterial hypotension refers to the frequent complications of spinal anesthesia during cesarean delivery. Expressed anxiety before the operation of caesarean section, can contribute to the occurrence of arterial hypotension during CA. Juvenile pregnant women are characterized by a high level of anxiety. Determination of the level of α-amylase of saliva is a simple and non-invasive way of an objective assessment of the intensity of stress. Objective: To develop an algorithm for predicting arterial hypotension in spinal anesthesia during cesarean section in young primiparas. Materials and methods of research. After the approval of the ethical committee of the FSBU VO “Amurskaya GMA” of September 21, 2016. Clinical research on the topic “Anesthesia of delivery of young patients” conducted a prospective observational study of 43 pregnant women aged 14 to 18 years, on the basis of the regional perinatal center of GAUZ JSC “AOKB” in the period from 2016 to 2017. Primary endpoints of the study included a level of salivary α-amylase (AAS) recorded at resting patients (baseline level) and on the operating table immediately before anesthesia, as well as an assessment of anxiety and depression on the HADS scale performed on the eve of delivery. The parameters of hemodynamics (blood pressure and heart rate) were recorded on the eve of delivery, before performing spinal anesthesia, and the lowest level of blood pressure during the operation was noted. The level of α-amylase was determined by a Labio 200 (Mindray), using the “alfa-AMY” reagent, kinetic method on photometric systems. Results. In the presence of clinically significant anxiety on the HADS scale in the patient, the level of AAS before the operation increases by almost a quarter of the initial level, whereas in patients with anxiety scores less than 11 points, the percentage increase in AAS is 2 times less. The maximum decrease in blood pressure and blood pressure in patients during the operation of a cesarean section with an anxiety score above 11 points is on average 37-38% of the initial, while in patients with no clinically significant anxiety, the blood pressure increase is on average 17.5%. The difference between the mean absolute values of AAS levels at rest and before the operation in patients of the above 2 subgroups was also expressed. Сonclusion. The level of amylase has a strong associative relationship with the scale of anxiety and depression of HADS. The algorithm developed by us, which includes preoperative levels of salivary α-amylase and systolic blood pressure, allows us to predict the likelihood of intraoperative hypotension in a particular patient.


2016 ◽  
Vol 19 (5) ◽  
pp. 611 ◽  
Author(s):  
G Batmaz ◽  
AN Aksoy ◽  
S Aydın ◽  
NK Ay ◽  
B Dane

1986 ◽  
Vol 60 (4) ◽  
pp. 1401-1406 ◽  
Author(s):  
L. G. Moore ◽  
P. Brodeur ◽  
O. Chumbe ◽  
J. D'Brot ◽  
S. Hofmeister ◽  
...  

To test the hypothesis that increased hypoxic ventilatory responsiveness (HVR) raised maternal ventilation and arterial oxygenation during high-altitude pregnancy and related to the birth weight of the offspring, we studied 21 residents of Cerro de Pasco, Peru (4,300 m), while eight of them were 36 +/- 0 wk pregnant and 15 of them 13 +/- 0 wk postpartum. HVR was low in the nonpregnant women (mean +/- SE shape parameter A = 23 +/- 8) but increased nearly fourfold with pregnancy (A = 87 +/- 17). The increase in HVR appeared to account for the 25% rise in resting ventilation with pregnancy (delta VE observed = 2.4 +/- 0.7 l/min BTPS vs. delta VE predicted from delta HVR = 2.6 +/- 1.7 l/min BTPS, P = NS). Hyperoxia decreased ventilation in the pregnant women (P less than 0.01) to levels similar to those measured when nonpregnant. The increased ventilation of pregnancy raised arterial O2 saturation (SaO2) from 83 +/- 1 to 87 +/- 0%, and SaO2 was correlated positively with HVR in the pregnant women. The rise in SaO2 compensated for a 0.9 g/100 ml decrease in hemoglobin concentration to preserve arterial O2 content at levels present when nonpregnant. Cardiac output in the 36th wk of pregnancy did not differ significantly from values measured postpartum. The increase in HVR correlated positively with infant birth weight. An increase in HVR may be an important contributor to increased maternal ventilation with pregnancy and infant birth weight at high altitude.


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