Related Experiment Video
Updated: May 5, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Giant intrapericardial aneurysm of the left atrial appendage
P J Frambach1, G G Geskes, E C Cheriex
1Department of Cardiology, Academic Hospital Maastricht, The Netherlands.
Insights
A rare left atrial appendage aneurysm caused chest pain and heart muscle damage in a young patient. The aneurysm compressed a coronary artery, leading to myocardial injury.
Area of Science:
- Cardiology
- Cardiac Surgery
- Vascular Medicine
Background:
- Left atrial appendage aneurysms are rare cardiac anomalies.
- Supraventricular arrhythmias can be associated with cardiac structural abnormalities.
Observation:
- A young patient presented with chest pain, elevated cardiac enzymes, and supraventricular arrhythmias.
- Imaging revealed an aneurysm of the left atrial appendage.
Findings:
- The left atrial appendage aneurysm was compressing the left anterior descending coronary artery.
- This compression was identified as the cause of myocardial injury.
Implications:
- This case highlights a potential, albeit rare, cause of myocardial injury in young individuals.
- Accurate diagnosis and understanding of cardiac anatomy are crucial for managing such conditions.
Abstract:
A young patient is reported with an aneurysm of the left atrial appendage having supraventricular arrhythmias and a period of chest pain accompanied by a rise in cardiac enzymes. Compression of the left anterior descending coronary artery by the aneurysm was felt to be responsible for the myocardial injury.
Related Concept Videos
Location and Orientation of the Heart
The Aorta
The average diameter of the aorta is approximately 2-3 cm, but the size can vary depending on the section of the aorta and the individual's age, sex, and body size. The aorta is...
Cardiac Catheterization III: Left Heart Catheterization
Aortic Regurgitation I: Introduction
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Aneurysm I: Introduction

