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Ann Thorac Surg 1997;64:1489-1491
© 1997 The Society of Thoracic Surgeons

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Carbon Dioxide Field Flooding Minimizes Residual Intracardiac Air After Open Heart Operations

Divisions of Cardiothoracic Surgery and Cardiology, Louisiana State University School of Medicine, New Orleans, Louisiana

Accepted for publication May 13, 1997.

Transesophageal echocardiographic studies were used to monitor the presence of air bubbles in the heart after open heart operations. After cardiac valvular procedures all 22 patients managed with careful deairing procedures had persistence of air bubbles for at least 30 minutes and usually for 45 minutes. In 56 patients with CO₂ field flooding, all foam disappeared in less than 1 minute in 48 patients and the remaining 8 had complete disappearance in 1 to 24 minutes. These observations demonstrate the ineffectiveness of the usual deairing maneuvers and the effectiveness of CO₂ field flooding in displacing air.

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