Key result
TEE probe insertion dampens right radial arterial tracings via aberrant right subclavian artery compression.
Case Report (n=1)
No
An aberrant right subclavian artery should be suspected in cases of unexplained intraoperative dampening of the right radial arterial waveform following TEE probe insertion.
May prompt consideration of aberrant subclavian artery with unexplained radial damping on infant TEE insertion; hypothesis-generating for preoperative vascular screening.
An aberrant right subclavian artery (ARSA) is the most common congenital anomaly of a left aortic arch. Given the anatomical course of the ARSA, it generally remains asymptomatic throughout life without hemodynamic or respiratory effects. We report the intraoperative diagnosis of ASRA during surgery for congenital heart disease when there was dampening of the waveform from the right radial arterial cannula during transesophageal echocardiography (TEE) probe placement. The subsequent identification of ARSA highlights the importance of considering vascular anomalies in cases of unexplained intraoperative hemodynamic monitoring abnormalities during and after TEE probe insertion.
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Elazzouny et al. (2026) conducted a case report in Aberrant right subclavian artery (n=1). Transesophageal echocardiography (TEE) probe insertion was evaluated on Dampening of right radial arterial cannula tracing. Insertion of a transesophageal echocardiography probe in an infant with an aberrant right subclavian artery caused mechanical compression, leading to dampened right radial arterial tracings.
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