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Ensure an “Ultrasound Window” on the Patient's Neck to Evaluate Cerebral Blood Flow!Funding None.
Near-infrared spectroscopy (NIRS) does not provide information about changes in oxygenation in whole-brain areas. Although the branching vessels of the aortic arch are not always easy to identify using transesophageal echocardiography (TEE), the blood flow status of cervical arteries can always be assessed by applying an ultrasound probe via the “ultrasound window” on the patient's neck, which can be ensured by devising alternative insertion approaches of the central venous catheter. This method is very simple but compensates for the limitations of the combination of NIRS and TEE, especially during cardiac surgery with cardiopulmonary bypass management using selective cerebral perfusion.
Keywordsanesthesia (includes related subject matter) - cardiopulmonary bypass - congenital heart disease - coronary artery bypass grafts surgery - education - all levels - ultrasound (all applications)
Details of Authors' Contributions
Tomohiro Yamamoto is the corresponding author. He wrote the first draft of the manuscript, and made the figures and [Supplemental video 1].
Takehito Mishima, Shuichi Shiraishi, Takeshi Saito, and Ehrenfried Schindler helped in writing the first draft of the manuscript.
Received: 06 November 2020
Accepted: 19 January 2021
15 June 2021 (online)
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