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Updated: May 7, 2026

The Intra-Aortic Balloon Pump
Published on: February 5, 2021
Iatrogenic Aortic Regurgitation Caused by Arterial Cannula Tip Rotation During Cardiopulmonary Bypass: A Case Report
Soyoka Ikeda1,2, Eiki Kanemaru1, Takahisa Goto3
1From the Department of Anesthesiology and Critical Care Medicine, Yokohama City University Hospital, Yokohama, Japan.
Abstract:
Iatrogenic aortic regurgitation (AR) after ventricular septal defect (VSD) closure occurs because of the distortion of the aortic valve or leaflet perforation. We presented a case of a 1-month-old child who had iatrogenic AR after VSD closure caused by the rotation of the arterial cannula tip toward the aortic valve during cardiopulmonary bypass. Transesophageal echocardiography (TEE) detected a retrograde jet flow from the arterial cannula to the aortic valve, causing eccentric AR. Our case shows a new differential diagnosis of iatrogenic AR after VSD closure and TEE's usefulness with color Doppler imaging to identify the direction of the arterial cannula tip.
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