Unusual Case of Iatrogenic Inadvertent Diversion of the Inferior Vena Cava Into the Left Atrium in a Patient With Atrial Septal Defect: Diagnosed by the Intraoperative Transesophageal Echocardiography.

Q2 Medicine

Journal of Cardiovascular Imaging Pub Date : 2022-10-01 DOI:10.4250/jcvi.2022.0024

Shin-Jae Kim, Soe Hee Ann, Sangwoo Park

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Abstract

https://e-jcvi.org An 18-year-old girl was referred for an atrial septal defect (ASD) closure. Transthoracic echocardiography (TTE) revealed a small secundum ASD near the aortic root and another large posteroinferior-lying ASD (Figure 1). The measured Qp:Qs was 2.5:1. Intraoperative transesophageal echocardiography (TEE) also demonstrated findings similar to TTE (Figure 2A-C). Under standard cardiopulmonary bypass (CPB), the surgeon closed 2 defects using pericardial patches. After weaning from the first CPB, the systemic oxygen saturation suddenly decreased to 82%. Emergently performed intraoperative TEE revealed that the lower margin of patch closure was incorporated into the Eustachian valve, and the blood flow was diverted from the inferior vena cava (IVC) into the left atrium (LA) (Figure 2D, Movie 1). On the second CPB, the surgeon repositioned the patch and reconnected the IVC to the right atrium (Figure 2E and F, Movies 2 and 3). The second CPB was weaned, and the systemic oxygen saturation was 100%.

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