Morphometric Study of the Papillary Muscle in the Right Ventricle of the Heart in the Bangladeshi Population

Papillary muscles are one of the important components of the musculature of the ventricles of the heart. Various diseases of papillary muscle dysfunction such as papillary muscle ischemia, left ventricular dilation, non-ischemic papillary muscle atrophy, papillary muscle or chordae congenital anomalies, dilated or hypertrophic cardiomegaly are commonly observed. Apparently normal postmortem hearts (n=60) were used in this study. Based on gender, specimens were grouped as follows: group A (n=41) ‘male’ and group B (n=19) ‘female’. The length and breadth of the anterior, posterior and septal papillary muscles were measured. The mean length of the anterior papillary muscle was 17.27 (±4.30) mm in males, 16.98 (±3.70) mm in females, the posterior papillary muscle was 14.04 (±3.78) mm in males, and 13.81 (±2.47) mm in female, and septal papillary muscle was 7.35 (±2.78) mm in male and 6.73 (±1.94) mm in female. The breadth of anterior papillary muscle was 5.75 (±1.24) mm and 5.94 (±1.76) mm, posterior papillary had 5.02 (±1.09) mm and 4.77 (±0.80) mm, and septal papillary was 3.97 (±0.81) mm and 3.86 (±0.38) mm in male and female accordingly.