The Annals of thoracic surgery
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Multicenter Study Comparative Study Clinical Trial Controlled Clinical Trial
Comparing two strategies of cardiopulmonary bypass cooling on jugular venous oxygen saturation in neonates and infants.
Cerebral protection during deep hypothermic circulatory arrest is predicted on efficient and complete cerebral cooling. Institutions approach cooling quite differently. We compared two different cooling strategies in terms of measured jugular venous bulb saturations in 39 infants undergoing deep hypothermic cardiopulmonary bypass to evaluate the effect of institutional cooling practices on jugular venous bulb saturation, an indirect measure of cerebral cooling efficiency. ⋯ Differences in cardiopulmonary bypass cooling techniques may alter the rate at which jugular bulb saturations rise. We believe this represents an indirect measure of the efficiency of brain cooling and therefore of cerebral protection.
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Multicenter Study Clinical Trial
Postcardiotomy shock: clinical evaluation of the BVS 5000 Biventricular Support System.
This prospective trial evaluated the safety and efficacy of a new pulsatile, temporary ventricular assist device, the BVS 5000. Patients were eligible for treatment if they were hemodynamically unstable despite maximal pharmacologic and intraaortic balloon pump therapy, were free of concomitant complications, and were less than 6 hours from the first attempt to separate from cardiopulmonary bypass. Fifty-five postcardiotomy patients were enrolled; 31 met all selection criteria and the remainder failed to meet criteria (n = 15) or were not successfully supported (n = 9). ⋯ Survival among patients not experiencing arrest was 47%. Eight patients are long-term survivors and were asymptomatic in New York Heart Association class I or II at 1-year follow-up. The BVS 5000 restored hemodynamics, permitted myocardial recovery, and improved survival in a group of patients who would have otherwise died.