Morphometric and Clinical Analysis of Moderator Band in Humans.
Loading...
Date
2015-10
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Background: The moderator band has the right bundle of His within the right ventricle. It also is known to
prevent the over dilatation of RV. It is important because of its involvement in RV infarcts, in differentiating RV
from LV in congenital anomalies, in VPDs & VTs and in VSDs. The present literature is very much lacking in its
morphometry.
Materials and Methods: Moderator band was looked for in 50 hearts and only in this study did we find it in all
the hearts. The length, the thickness, the distance from the tricuspid valve along with the presence of any
trabeculations in the septal end or in the papillary muscle end were looked for and recorded.
Results: The average length was 14.71±4.99mm, the average thickness was 4.97±1.64 mm, the average distance
from the tricuspid orifice was 19.85±5.92 mm. The attachment to the anterior papillary muscle was found to be
branched in 8 hearts that is having an incidence of 14% . The septal end were branched and separated as two
in only two specimens. Only one specimen had branched attachments on both the apical and septal ends.
Conclusion: The distance from tricuspid valve and knowledge of branching are important in corrective surgeries
of the VSDs. An awareness of length and thickness helps the clinician to differentiate moderator band from the
other structures, which may result in misdiagnosis during echocardiography. Its presence may in fact be of
significance in preventing over distension of the heart in RV myocardial ischaemia.
Description
Keywords
Moderator Band, Anterior Papillary Muscle, VSD, Right Ventricle, Tricuspid Valve
Citation
RajilaRajendran HannahSugirthabai , Victor Ashok , Vaithianathan Gnanasundaram , Sundaramurthi Indumathi , Balaji Thotakura , Yoganandham Janani. Morphometric and Clinical Analysis of Moderator Band in Humans. International Journal of Anatomy and Research. 2015 Oct-Dec; 3(4): 1741-1744.