The effect of pregnancy on the frontal plane QRS axis.
The electrical axis of the heart is an important parameter in electrocardiographic assessment. Slight degrees of left axis deviation have been attributed to a horizontal heart position resulting from the mechanical effects of abdominal distension, such as the physiological event of pregnancy. This study was undertaken to establish the validity of this concept.
D000005:Abdomen / Q000502:physiology; D001696:Biomechanical Phenomena; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D007743:Labor, Obstetric; D011247:Pregnancy