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Ann Thorac Surg 1976;22:176-181
© 1976 The Society of Thoracic Surgeons

Articles

Cardiac Performance and Oxygen Consumption during Intracardiac Operations in Children

George Benzing, III, M.D.*, James Helmsworth, M.D., J. Tracy Schreiber, M.D., Samuel Kaplan, M.D.

From the Departments of Pediatrics and Surgery, University of Cincinnati College of Medicine, Cincinnati, OH.

Accepted for publication December 18, 1975.

* Address reprint requests to Dr. Benzing, Children's Hospital Medical Center, Eden Ave, Cincinnati, OH 45229.

Cardiac performance and oxygen consumption in 30 patients undergoing surgical treatment for congenital cardiac disease were determined from intraoperative measurements. Arterial pressure, cardiac index, mean left ventricular hydraulic output power, and pulmonary artery oxygen saturation were obtained at average mean left atrial pressures of 8.1 and 15.2 cm H2O after cardiopulmonary bypass in 20 patients. These same variables were measured at an average pulmonary artery saturation of 65 and 75% in 30 patients. A composite of measurements of cardiac performance was desirable to guide precise patient care intraoperatively, especially if myocardial function was compromised. It is suggested that left atrial pressure be maintained at a level that results in a pulmonary artery saturation greater than 65%.




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G. Benzing III, J. A. Helmsworth, J. T. Schreiber, and S. Kaplan
Nitroprusside and Epinephrine for Treatment of Low Output in Children after Open-Heart Surgery
Ann. Thorac. Surg., June 1, 1979; 27(6): 523 - 528.
[Abstract] [PDF]


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Copyright © 1976 by The Society of Thoracic Surgeons.