scholarly journals Impaired circadian rhythm of blood pressure predicting adverse events in preeclampsia

Author(s):  
Nitisha Vijayvargia ◽  
Meenakshi Samariya

Background: Physiologically Blood pressure is higher during the day time (between 09 AM to 6 PM) and lower at night (10 pm to 3:00 am). During night both systolic and diastolic blood pressure readings drop by about 10-20%. In preeclampsia, the nocturnal decrease of BP is blunted and there is less variation among BP circadian values. Objective of the study is to know whether ratio of morning and nocturnal mean diastolic blood pressures calculated by timed i.e., 6 hourly blood pressure monitoring could be used to predict the prognosis of preeclampsia as in terms of Maternal and fetal prognosis.Methods: A prospective study is done using 6 hourly blood pressure measurements of antenatal patients in third trimester admitted for gestational hypertension or preeclampsia and their observation till delivery was done. Results: It is observed that non dipping and increased nocturnal diastolic blood pressures pattern causing reverse dipping pattern are significantly associated with increased severity of disease (p=000). Both maternal (p=0.04) and fetal adverse event (p=0.004) increased significantly with blunting of decrease in nocturnal blood pressures.Conclusions: We thus can conclude that blunting/reversal of circadian rhythm of blood pressure indicates progress of disease to its more severe form. It thus could be of great help in deciding for monitoring, timing of antihypertensives and prophylactic medications and deciding for termination of gestation.

2019 ◽  
Vol 15 (1) ◽  
pp. 70-75 ◽  
Author(s):  
Abo Taleb Saremi ◽  
Mohammad-Ali Shafiee ◽  
Mahdi Montazeri ◽  
Negin Rashidi ◽  
Mohammad Montazeri

Background: Preeclampsia is a global burden with 10 million incidences annually and 210 daily deaths worldwide. Diagnosis is mainly based on the features following full presentation. Objective: This study explored whether early pregnancy circadian changes of ambulatory blood pressure monitoring (ABPM) could predict preeclampsia and hypertension. Methods: In a prospective study, 294 pregnant women who were referred to Sarem Women’s Hospital, Iran were recruited. Systolic, diastolic and mean arterial pressures (MAP) were recorded (diurnally and nocturnally) in each trimester. Dipping was defined as a minimum 10% decrease in blood pressure. Results: Of the 251 women who completed the study, 25 percent (n=63) experienced blunted MAP dipping during sleep phases in the second trimester. Eighty-nine percent (n=56) experienced hypertensive disorder in the third trimester, one-third of which experienced preeclampsia. Of the women with normal MAP dipping (n=188), 5 percent (n=10) had gestational hypertension and 1 percent (n=2) became preeclamptic. (P<0.0001). Conclusion: This study clearly demonstrated blunted blood pressure dipping overnight during the second trimester which is a strong predictor of forthcoming pregnancy-induced hypertension and preeclampsia. A scoring system was developed to predict hypertensive disorder and it was significantly correlated with preeclampsia occurrence.


2017 ◽  
Vol 8 (3) ◽  
pp. 328-332
Author(s):  
Safura Hatamipour Dehno ◽  
Simin Taghavi ◽  
Nayyereh Ayati

Objectives: Hypertension, as a common problem during pregnancy, is a major cause of maternal and fetal morbidity and mortality. Anti-hypertensive drugs are used to prolong the pregnancy or modify perinatal outcomes in pregnant women with hypertensive disorders. Severe monitoring of blood pressure is subsequently essential in these mothers. The aim of this study was to evaluate the correlation between divided doses of chronic hypertensive drugs and the end of pregnancy in mothers with gestational hypertension. Materials and Methods: In this prospective research, 99 pregnant women with chronic hypertension, who were treated with antihypertensive medicines, were studied during pregnancy. During routine follow-up of these mothers, the number of the drug and the divided doses were recorded. The incidence of maternal and fetal outcomes were evaluated according to the number of less or more than 5 divided doses. Results: Maternal and fetal-baby complications were observed in 5.50 and 5.53% cases, respectively. The incidence of maternal and fetal complications were significantly enhanced by increasing the number of up-taken anti-hypertensive drugs. The maternal and fetal-baby complications were higher in mothers who received more than five divided doses compared to those who received less than five doses. Conclusion: Based on our results, chronic hypertension was associated with maternal and fetal-baby complications in half of the cases. It is clarified that precise blood pressure monitoring and regularly taking of anti-hypertensive medicine may decrease the hypertension side effects. The awareness about this field in the pre-pregnancy consulting is considered as the patients’ rights and should be respected.


2021 ◽  
Vol 06 (02) ◽  
pp. 079-085
Author(s):  
Ghizal Fatima ◽  
Ashish Jha ◽  
Mohsin Ali Khan

Abstract Background Shift work is associated with behavioral, psychosocial, and physiological consequences in the body that may cause cardiovascular disease (CVD) risk. Therefore, in this study we tried to demonstrate the disruption in circadian rhythm of blood pressure by ambulatory blood pressure monitor in shift working nurses. Methods A total of 50 nurses, 25 night shift working nurses (NSWN), and 25 day shift working nurses (DSWN) underwent ambulatory blood pressure monitoring (ABPM) for a period of 24 hours. Along with measurements of inflammatory markers (hs-CRP and IL-6) the risk factors for cardiovascular disease between NSWN and DSWN and their possible relationship with disrupted circadian rhythm were measured by circadian rhythm questionnaire. Results The mean systolic and diastolic pressure for a period of 24 hours and mean diastolic blood pressure analysis throughout the sleep time was found greater in the NSWN than the DSWN (118 mm Hg vs. 112 mm Hg, p < 0.05: 72 mm Hg vs. 68 mm Hg, p < 0.05: 62 mm Hg vs. 59 mm Hg, p < 0.05). High mean blood pressure readings were found to be more frequent in the NSWN (p < 0.05) than in DSWN. No significant differences were found in IL-6 and hs-CRP levels. However, a significant difference in circadian rhythm abnormality was found in NSWN than in DSWN. Conclusion The 7 day/24 hours ambulatory blood pressure monitoring (ABPM) in NSWN showed a reduced circadian rhythm variation in blood pressure along with abnormality in circadian rhythm itself as compared with DSWN. Work schedules and the consequent rest–activity schedules affect circadian rhythms, with likely long-term impact on health. Therefore, working in critical care unit during night hours leads to abnormal blood pressure in NSWN, suggesting that this type of work, in which sleep is disturbed, leading to mental stress, could be a direct risk factor in cardiovascular diseases.


Author(s):  
Sandeep Sood ◽  
Sirisha Anne ◽  
Kuldeep Kumar Ashta ◽  
Ravi Kumar

Background: White coat hypertension (WCH) is a common and well recognized phenomenon. It is also very prevalent amongst pregnant women and is often diagnosed as chronic/ gestational hypertension leading to unnecessary medications during pregnancy. ABPM is the gold standard for diagnosis of WCH. SBPM is an easy effective and reliable method to measure blood pressure but its efficacy needs to be tested and compared with ABPM in cases of WCH. It is important to compare the two methods in assessing WCH so SBPM can be utilized in cases of WCH, if found useful and efficacious.Methods: All pregnant women who presented to the ANC were screened for hypertension. Those who were diagnosed to be hypertensive in antenatal clinic and these patients were then admitted for ambulatory blood pressure monitoring (ABPM) for 24 hours and SBPM on 6 hourly bases for 5 days.Results: The ABPM and SBPB readings were noted, tabulated and compared. It was found that the prevalence of ‘WCH’ in this study using ABPM and SBPM were 47.368% (27/54) and 45.614% (26/54) respectively.Conclusions: The results in diagnosing WCH using ABPM and SBPM were comparable.


1979 ◽  
Vol 57 (s5) ◽  
pp. 291s-294s ◽  
Author(s):  
S. Mann ◽  
M. W. Millar Craig ◽  
D. I. Melville ◽  
V. Balasubramanian ◽  
E. B. Raftery

1. Ambulatory blood pressure monitoring was carried out in 10 subjects for a period of 48 h, the first or second 24 h part of which was selected randomly to be a period of complete bed rest. 2. Heart rate was significantly lower throughout the period of bed rest except for the period 04.00–08.00 hours, when there was little difference. 3. The circadian variation of blood pressure was reduced during the day of bed rest but this was mainly due to higher night-time pressures.


2012 ◽  
Vol 77 (05) ◽  
pp. 383-391 ◽  
Author(s):  
Tibor Fülöp ◽  
Darren W. Schmidt ◽  
Adrian Cosmin ◽  
Nahid Islam ◽  
Catherine Wells ◽  
...  

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