Cardiac Structure and Function in Morbidly Obese Parturients: An Echocardiographic Study

BACKGROUND: The increasing prevalence of obesity worldwide is a major threat to global health. Cardiac structural and functional changes are well documented for obesity as well as for pregnancy, but there is limited literature on morbidly obese parturients. We hypothesized that there are both cardiac structural and functional differences between morbidly obese pregnant women and pregnant women of normal body mass index (BMI). METHODS: This prospective cross-sectional study was performed in 2 referral maternity units in Cape Town, South Africa, over a 3-month period. Forty morbidly obese pregnant women of BMI ≥40 kg·m−2 (group O) were compared to 45 pregnant women of BMI ≤30 kg·m−2 (group N). Cardiac structure and function were assessed by transthoracic echocardiography, according to the recommendations of the British Society of Echocardiography. The 2-sample t-test with unequal variances was used for the comparison of the mean values between the groups. RESULTS: Acceptable echocardiographic images were obtained in all obese women. Statistical significance was defined as P

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