Electrocardiographic P‐Wave Duration, QT Interval, T Peak to End Interval and Tp‐e/QT Ratio in Pregnancy with Respect to Trimesters

Abstract

P-wave duration is prolonged in the second trimester, and resumes a plateau thereafter. Maximum QTc interval, Tp-e interval and Tp-e/QT ratio are increased in the late pregnancy. Although these indices are altered during the course of pregnancy, they all remain in the normal ranges.