Unusual Capnographic Cardiogenic Oscillations During Cardiopulmonary Bypass

Lin, Chin-Shuan; Chi, Kuang-Piao; Chan, Wen S.

doi:10.1053/j.jvca.2009.07.017

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2022

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“…Pulsations in the aneurysm can cause a cyclical back and forth movement of gases in the bronchus, which is prominent during expiration. 1 These oscillations decreased only after pericardiectomy and placement of stay sutures, suggesting amplification of normal cardiac oscillations by the large aortic aneurysm. During surgery, the aneurysm was observed to be in direct contact with the left mainstem bronchus, which may explain the capnographic findings.…”

Section: Discussionmentioning

confidence: 98%

“…The straight-line alveolar plateau can be interrupted by artifacts due to surgical maneuvers, spontaneous breathing over controlled ventilation, or cardiogenic oscillations. 1 We describe a case in which pulsations of an ascending aortic aneurysm produced an oscillatory pattern on the alveolar plateau of the capnogram. The patient gave written informed consent for publication of this case report.…”

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confidence: 99%

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