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Updated: Apr 23, 2026

Discovering Middle Ear Anatomy by Transcanal Endoscopic Ear Surgery: A Dissection Manual

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Large Eustachian valve: an incidental finding yet perplexing.

Anju Sarupria¹, V Bhuvana, Manju Mani

¹Department of Cardiac Anaesthesia, Pushpanjali Crosslay Hospital, Vaishali, Ghaziabad, Uttar Pradesh, India.

Annals of Cardiac Anaesthesia

|October 5, 2014

Summary

This summary is machine-generated.

The Eustachian valve, a remnant in the heart, can cause surgical complications. This case highlights a large Eustachian valve obstructing inferior vena cava cannulation during aortic valve replacement.

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Area of Science:

Cardiology
Cardiac Surgery
Embryology

Background:

The Eustachian valve (EV) is a remnant of the embryonic right valve of the sinus venosus.
It is located in the right atrium and can be mistaken for other cardiac anomalies like Chiari network or adhesions.
Unusual complications associated with EV are infrequently reported.

Observation:

A large Eustachian valve was identified in a patient undergoing aortic valve replacement.
The EV significantly impeded the cannulation of the inferior vena cava (IVC).

Findings:

Transesophageal echocardiography (TEE) accurately diagnosed the large EV.
TEE provided crucial information regarding the anticipated difficulty with IVC cannulation.

Implications:

Early diagnosis of large EV via TEE is vital for surgical planning.
Preparedness for alternative strategies is essential when encountering EV during cardiac surgery.
Understanding EV anatomy and potential complications improves patient outcomes in valve replacement procedures.