Morphological pattern of Crista terminalis, Musculi pectinati and Taenia sagittalis with applied significance

Abstract

Introduction: Crista terminalis is a fibromuscular vertical ridge of smooth myocardium within the right atrium of the heart. Material and Methods: We examined eighty human hearts obtained from the cadaver to see morphological pattern of Crista terminalis, Musculi pectinati and Taenia sagittalis. In 40% cases musculi pectinati oriented perpendicular to the Crista terminalis followed by Parallel in 18.75%. We also observed single and multiple trunks of Taenia sagittalis in 56.25% and 6.25% cases respectively. In the present study we tried to provide a guideline of gross morphological arrangement of principal muscular bundles for the interventional operator so that they have precise anatomical information prior to interventional procedure.

Clinical anatomy of human heart atria and interatrial septum — anatomical basis for interventional cardiologists and electrocardiologists. Part 1: right atrium and interatrial septum

“…Close to the inferior vena cava (IVC) it bends anteriorly to get past the right border of its orifice. Subsequently, it ends its track in the region of the cavotricuspid isthmus [6][7][8][9]. The mean length of the terminal crest is 51.0 ± 9.0 mm and its thickness at the level of SVC is about 5.5 mm [10].…”

Prominent Crista Terminalis Magnetic Resonance Imaging Findings

“…CMR is very important for morphological imaging of the heart and the differentiation of cardiac masses. PCT crosssectional imaging findings in the literature are limited to case reports, and studies describing PCT cross-sectional imaging features are few (3,9). PCT crosssectional imaging findings were evaluated by CMR.…”

Diversity and complexity of the cavotricuspid isthmus in rabbits: A novel scheme for classification and geometrical transformation of anatomical structures

“…In previous studies of human hearts, a classification of the PM network into 6 types according to orientation in relation to the TC, spacing, and branching was introduced [ 12 – 14 ] but to our knowledge no approach takes functional considerations for classification into account: Since the electrical conduction within the CTI is traversing through different anatomical regions, i.e. the TC, the complex network of PMs, and the VB, the activation pattern can be expected to be non-uniform and only piecewise continuous.…”