Related Experiment Video
Updated: Feb 1, 2026

Microsurgical Creation of Giant Bifurcation Aneurysms in Rabbits for the Evaluation of Endovascular Devices
Published on: September 8, 2023
Giant right atrial aneurysm
Aisling Kinsella1, Jagdish Butany2, Bernd J Wintersperger3
1Department of Cardiovascular Surgery, Toronto General Hospital, Toronto, ON, Canada.
Insights
Congenital right atrial aneurysms are rare heart conditions, often diagnosed in young adults. Surgical removal is recommended due to a significant risk of sudden cardiac death, even without symptoms.
Area of Science:
- Cardiology
- Congenital Heart Disease
- Cardiac Surgery
Background:
- Congenital aneurysms of the right atrium are exceedingly rare cardiac malformations.
- Literature reports are limited, underscoring the rarity of this condition.
Observation:
- These aneurysms typically manifest in the third decade of life.
- Diagnostic considerations vary based on the patient's age group.
- A notable association exists with a 5% risk of sudden cardiac death.
Findings:
- Surgical excision is the recommended management strategy for diagnosed congenital right atrial aneurysms.
- Intervention is advised irrespective of the presence or absence of clinical symptoms.
Implications:
- Early diagnosis and surgical intervention are crucial for preventing sudden cardiac death in affected individuals.
- This highlights the importance of considering rare congenital heart anomalies in the differential diagnosis of cardiac events.
- Prompt surgical management can significantly improve patient outcomes and reduce mortality risk.
Abstract:
Only a handful of congenital aneurysms of the right atrium have been reported in the literature. They are most commonly found in the third decade of life, and the differential diagnosis depends on the patient's age profile. They are associated with 5% risk of sudden cardiac death. Once diagnosed, they should be surgically removed even in the absence of symptoms.
Related Concept Videos
Aneurysm I: Introduction
Aneurysm IV: Nursing Management
Aneurysm III: Interprofessional Care
Aneurysm II: Clinical Manifestations and Diagnostic Studies
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
Lampbrush Chromosomes
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...

