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International Journal of Recent Trends in Science and Technology, ISSN 2277-2812 E-ISSN: 2249-8109
Volume 10, Issue 1, February 2014 pp 121-123
Morphometric Study on Papillary Muscles of Human Tricuspid Valve-Dissection Method
Harsha B. R.1, Dakshayani K .R.2
1Assistant Professor, Department of Anatomy, DM WIMS, Meppadi, Kerala, INDIA.
2Professor and Head, Department of Anatomy, MMC and RI, Mysore, Karnataka, INDIA.
Academic Editor : Dr. Aher K.R.
Background: Aim of the present study was to observe the morphology, measurements and types of papillary muscles present in the tricuspid valve of human heart. Morphology, measurements and attachments of papillary muscles in tricuspid valve gains utmost importance in cardiac surgeries and variations in the papillary muscle morphology is a one of causes for myocardial infarction in recent times because advent in modern technologies in treatment of tricuspid valve diseases. Materials and Methods: This study was carried out on 96 normal fresh formalin fixed human post-mortem heart specimens. Hearts are not grouped into any criteria of sex and age. Dissection was performed according to standard techniques. Types of papillary muscles were observed and length, width and thickness of each muscle are measured and documented. Results: In the present study, number of papillary muscles was present with a frequency of 2-10. Maximum numbers of papillary muscles were 10 seen only in one heart (1%) and minimum numbers of papillary muscles were 2 seen in 3 hearts (3.1%). Anterior papillary muscles were present in all 96 (100%) hearts. Maximum numbers of muscles observed were 3 seen in 6 hearts (6.3%) and minimum number muscle was 1 seen in 66 (68.8%) hearts, which was normal. Two papillary muscles were seen in remaining 24 hearts (25%). Posterior papillary muscles were present in 95 (98.95%) hearts. Seven papillary muscles were observed in only 1 (1%) heart and only 1 papillary muscle was seen in 27 (28.1%) hearts. Septal papillary muscles were present in 73 hearts (76.1%). Maximum numbers of papillary muscles were 2 seen in 6 (6.3%) hearts and minimum number of muscles was only 1 seen in 67 (69.8%) hearts. In 29 hearts (30.2%) four papillary muscles were observed with a combination of 1 anterior, 2 posterior and 1 septal papillary muscle. Measurements of papillary muscles are measured and documented. Conclusion: This study will serve to understand the tricuspid valve complex and morphometry of different papillary muscles and it will help in various surgical procedures and cardiac treatment done on tricuspid valve.