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The Journal of Thoracic and Cardiovascular Surgery, Vol 86, 153-155, Copyright © 1983 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Scavenging of cardioplegic solution from right heart to prevent hyperkalemia

EA Kopman and TB Ferguson

The present study was designed to test the hypothesis that hyperkalemia can be prevented if the cardioplegic solution returning to the right heart from the coronary sinus is aspirated. In the control group (15 patients without aspiration), the potassium concentration rose from 3.5 +/- 1 (SD) mEq/L to 6.3 +/- 0.4 mEq/L (p less than 0.001) 10 minutes after the administration of cardioplegic solution and was still high before the patient was weaned from cardiopulmonary bypass (5.2 +/- 0.3 mEq/L (p less than 0.001). Electromechanical recovery time was delayed. In the second group (15 patients with aspiration), serum potassium did not change. Our data indicate that scavenging of cardioplegic solution may prevent hyperkalemia in most patients.




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