Prevalence of left ventricular dysfunction and relationship with serum selenium in apparently healthy pregnant women: results from the PEACE registry

Published: June 28, 2024
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Background: Peripartum cardiomyopathy (PPCM) is common in North-West Nigeria and many affected patients have selenium deficiency. It is not known whether asymptomatic cardiac dysfunction related to selenium deficiency commonly starts during pregnancy in the region. The study aimed to determine the prevalence of left ventricular (LV) systolic and diastolic dysin apparently healthy pregnant women and if there is relationship with serum selenium, in a society with high prevalence of PPCM.
Methods: This was a prospective longitudinal study carried out in 3 centers in Kano, Nigeria. 108 apparently healthy pregnant women were consecutively recruited between the 28th and 38th weeks of gestation and reevaluated at the 6th to 8th weeks postpartum. Serum selenium was measured at enrolment during pregnancy. LV systolic dysfunction was defined as LV ejection fraction (LVEF) below 50% and LV diastolic dysfunction was defined and graded according to the recommendations of the American Society of Echocardiography.
Results: LV systolic dysfunction and diastolic dysfunction were found in 6 subjects (5.6%) and 20 subjects (18.5%) during pregnancy, and in 9 subjects (10.2%; p=0.340) and 14 (15.9%; p=0.631) of them after delivery, respectively. Mean LVEF was 62.2±6.9% and 60.6±8.2% (p=0.108) during pregnancy and after delivery respectively. Mean LV end-diastolic dimension measured during pregnancy (48.6±4.9 mm) was not significantly difference with what was obtained after delivery (47.2±6.9 mm) (p=0.099). Mean left atrial size (37.0±4.8 mm vs. 35.2±4.8 mm; p<00.1) and mitral septal E/e’ ratio (8.4±2.8 vs. 1.3±0.5; p<0.001) were higher during pregnancy than after delivery, respectively. Selenium deficiency (<70 μg/L) was found in only 2.8% of subjects, and serum selenium did not significantly correlate with indices for LVEF or diastolic (mitral E/e’ ratio) functions both during pregnancy and after delivery.
Conclusions: LV systolic and diastolic dysfunction and selenium deficiency were uncommon during apparently healthy pregnancy and early puerperium, and serum selenium did not correlate with indices for LV function, in a population with high prevalence of PPCM.

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How to Cite

Karaye, K. M., Mohammed, I. Y., Sa’idu, H., Ishaq, N. A., Balarabe, S. A., Tukur, J., … Adebayo, R. A. (2024). Prevalence of left ventricular dysfunction and relationship with serum selenium in apparently healthy pregnant women: results from the PEACE registry. Global Cardiology, 2(2). https://doi.org/10.4081/cardio.2024.36

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