Association of parity with carotid diameter and distensibility: Multi-ethnic study of atherosclerosis

Dhananjay Vaidya, Wendy L. Bennett, Christopher T. Sibley, Joseph F. Polak, David M. Herrington, Pamela Ouyang

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Pregnancy and childbirth are associated with hemodynamic changes and vascular remodeling. It is not known whether parity is associated with later adverse vascular properties such as larger arterial diameter, wall thickness, and lower distensibility. We used baseline data from 3283 women free of cardiovascular disease aged 45 to 84 years enrolled in the population-based Multi-Ethnic Study of Atherosclerosis. Participants self-reported parity status. Ultrasound-derived carotid artery lumen diameters and brachial artery blood pressures were measured at peak-systole and end-diastole. Common carotid intima-media thickness was also measured. Regression models to determine the association of carotid distensibility coefficient, lumen diameter, and carotid intima-media thickness with parity were adjusted for age, race, height, weight, diabetes mellitus, current smoking, blood pressure medication use, and total and high-density lipoprotein cholesterol levels. The prevalence of nulliparity was 18%. In adjusted models, carotid distensibility coefficient was 0.09×10 Pa lower (P=0.009) in parous versus nulliparous women. Among parous women, there was a nonlinear association with the greatest carotid distensibility coefficient seen in women with 2 live births and significantly lower distensibility seen in primiparas (P=0.04) or with higher parity >2 (P=0.005). No such pattern of association with parity was found for lumen diameter or carotid intima-media thickness. Parity is associated with lower carotid artery distensibility, suggesting arterial remodeling that lasts beyond childbirth. These long-term effects on the vasculature may explain the association of parity with cardiovascular events later in life.

Original languageEnglish (US)
Pages (from-to)253-258
Number of pages6
JournalHypertension
Volume64
Issue number2
DOIs
StatePublished - Aug 2014

Keywords

  • carotid artery
  • carotid intima-media thickness
  • common
  • pregnancy
  • women

ASJC Scopus subject areas

  • Internal Medicine

Fingerprint Dive into the research topics of 'Association of parity with carotid diameter and distensibility: Multi-ethnic study of atherosclerosis'. Together they form a unique fingerprint.

  • Cite this

    Vaidya, D., Bennett, W. L., Sibley, C. T., Polak, J. F., Herrington, D. M., & Ouyang, P. (2014). Association of parity with carotid diameter and distensibility: Multi-ethnic study of atherosclerosis. Hypertension, 64(2), 253-258. https://doi.org/10.1161/HYPERTENSIONAHA.114.03285