Clinical Significance of Morphological analysis of Right Chordae Tendinae in Human Hearts

Dr.S.Kavitha; Dr.V.Rajitha

Volume : VIII, Issue : IV, April - 2019

Clinical Significance of Morphological analysis of Right Chordae Tendinae in Human Hearts

Dr. S. Kavitha, Dr. V. Rajitha

Abstract :

To analysis the morphology and morphometric measurement f right chordae tendinae in human hearts .The chordae tendinae of right ventricle are fious, collagenous cords supporting the cusps of the atrio–ventricular valves. The approximate measurements of the chordae have to be known because there is always a possibility of over shortening of the chordae during valve replacement procedures which can result in rupture of papillary muscle. The shape, size and attachments of the chordae differ between individuals. However for the purpose of description it would suffice to express that the chordae are extensions between the papillary muscles and the atrio–ventricular valve. The study was done among100 human cadaveric heart specimens which were procured from the Department of Anatomy of VMKV Medical College, Salem. The total numbers of chordae tendinae attached to the anterior papillary muscle were higher compared to posterior and septal chordae in right ventricle the difference between number of chorda tendinae of anterior papillary to posterior and septal were from 5 to 13 with a mean of 9±2. Position of chordal attachment is classified into apical chordal attachment, lateral chordal, marginal attachment. The length of chordae of posterior papillary muscle was ranged from 5.75 to 17.13 mm with a mean of 11.04mm ±2.80. The eadth of chordae of right posterior papillary muscle ranged from 0.10 to 0.61 mm with a mean of 0.29 ± 0.15. While fixing of valve during replacement even a minimal difference in the measurements will be crucial for effective post–surgical functioning of the valve. Thus these results may be of great value in endoscopic and conventional tricuspid valve replacements or reconstruction of the chordae tendinae and in tricuspid valve homograft implantation