A cohort evaluation on arterial stiffness and hypertensive disorders in pregnancy

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• 作者：Wai Yee Lim (3)
  Seang Mei Saw (2) (3)
  Kok Hian Tan (1) (2)
  George SH Yeo (1) (2)
  Kenneth YC Kwek (1) (2)
  
• 关键词：Central aortic pulse pressure ; Pulsewave analysis ; Pregnancy hypertensive disorders
• 刊名：BMC Pregnancy and Childbirth
• 出版年：2012
• 出版时间：December 2012
• 年：2012
• 卷：12
• 期：1
• 全文大小：195KB
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  48. The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2393/12/160/prepub
  
• 作者单位：Wai Yee Lim (3)
  Seang Mei Saw (2) (3)
  Kok Hian Tan (1) (2)
  George SH Yeo (1) (2)
  Kenneth YC Kwek (1) (2)
  
  3. Saw Swee Hock School of Public Health, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore
  2. Yong Loo Lin & Saw Swee Hock School of Public Health, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore
  1. Department of Maternal and Fetal Medicine, KK Women鈥檚 & Children鈥檚 Hospital, 100 Bukit Timah Road, Singapore, 229899, Singapore
  

文摘

Background Hypertensive disorders in pregnancy are associated with systemic endothelial dysfunction leading to impaired physiological vasodilation. Recent evidence has shown central aortic pressures obtained through pulse wave analysis, at less than 14 weeks of gestation, to be predictive of pre-eclampsia. In light of this, we aimed to evaluate the role of central aortic stiffness in the prediction and discrimination of hypertensive disorders in pregnancy. Methods A cohort study of women with viable, singleton pregnancies at less than 14 weeks of amenorrhoea, and without multiple pregnancies, autoimmune or renal disease, diagnosed with aneuploidy or fetal anomaly will be recruited from a single maternity hospital and followed up till delivery and puerperium. A targeted sample size of 1000 eligible pregnant women will be enrolled into the study from antenatal clinics. Main exposure under study is central aortic pulse pressure using radial pulse wave recording, and the outcomes under follow-up are gestational hypertension and pre-eclampsia. Other measures include lifestyle factors such as smoking, physical exercise, psychometric evaluations, vasoactive factors, uterine artery pulsatility index, height and weight measurements. These measures will be repeated over 4 antenatal visits at 11-14, 18-22, 28-32 and above 34 weeks of gestation. Double data entry will be performed on Microsoft Access, and analysis of data will include the use of random effect models and receiver operating characteristic curves on Stata 11.2. Discussion The proposed study design will enable a longitudinal evaluation of the central aortic pressure changes as a marker for vascular compliance during pregnancy. As measures are repeated over time, the timing and severity of changes are detectable, and findings may yield important information on how aberrant vascular responses occur and its role in the early detection and prediction of hypertensive disorders.