Title
Morphology and morphometry of LAA
Authors
Pramesh Jain1, Atul Kumar2, Shivani Sinha3,* & Neelam R. Charles2
Affiliation
1Department of Cardiothoracic and Vascular Surgery, Super Speciality Hospital, Indore, Madhya Pradesh, India; 2Department of Surgery, DR. Laxmi Narayan Pandey Government Medical College, Ratlam, Madhya Pradesh, India; 3Department of Microbiology, DR. Laxmi Narayan Pandey Government Medical College, Ratlam, Madhya Pradesh, India; *Corresponding author
Pramesh Jain - E-mail: jainpramesh@yahoo.com; Phone: +91 9755039900
Atul Kumar - E-mail: dratul1705@gmail.com; Phone: +91 9458767180
Shivani Sinha - E-mail: drshivani1705@gmail.com; Phone: +916265639609
Neelam R. Charles - E-mail: thakurraju622@gmail.com; Phone: +91 9827047489
Article Type
Research Article
Date
Received July 1, 2026; Revised July 31,
2026; Accepted July 31, 2026, Published July 31, 2026
Abstract
The left atrial appendage is clinically important because its variable anatomy, irregular lumen, lobulations and narrow ostium can promote blood stasis and thromboembolism. Therefore, it is of interest to assess the 25 formalin-fixed adult human hearts to record LAA morphology and morphometry using vernier calipers, measuring thread and direct dissection. The mean LAA length was 3.7 ± 1.4 cm and mean maximum width was 1.4 ± 0.5 cm, with irregular S-shaped morphology being most common. Inferiorly directed apex, crenation, pouches and notches were frequently observed and specimens with two or more pouches had significantly greater width than single-pouch specimens. Thus, data shows the anatomical variability of the LAA and may aid anatomical teaching, imaging interpretation and planning of LAA-related thromboembolic prevention procedures.
Keywords
Left atrial appendage (LAA), morphology, morphometry, cadaveric heart, pouches, thromboembolism
Citation
Jain et al. Bioinformation 22(7): 3943-3946 (2026)
Edited by
Hiroj Bagde
ISSN
0973-2063
Publisher
License
This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.
