Effect of slow versus rapid rewarming on jugular bulb oxygen saturation in adult patients undergoing open heart surgery.
BACKGROUND
A debate has appeared in the recent literature about the optimum rewarming strategy (slow vs. rapid) for the best brain function. This study was designed to compare the effect of slow versus rapid rewarming on jugular bulb oxygen saturation (SjO2) in adult patients undergoing open heart surgery.


METHODS
A total of 80 patients undergoing valve and adult congenital heart surgery were randomly allocated equally to rapid rewarming group 0.5 (0.136)°C/min and slow rewarming group 0.219 (0.055)°C/min in jugular bulb sampling was taken before, during and after surgery. Surgery was done at cardiopulmonary bypass (CPB) temperature of 28-30°C and rewarming was performed at the end of the surgical procedure.


RESULTS
CPB time, rewarming period were significantly longer in the slow rewarming group. Significant difference was observed in the number of the desaturated patients (SjO2 ≤ 50%) between the two groups; 14 (35%) in rapid rewarming versus 6 (15%) in the slow rewarming group; P = 0.035 by Fisher's exact test.


CONCLUSIONS
Slow rewarming could reduce the incidence of SjO2 desaturation during rewarming in adult patients undergoing open heart surgery.
Departments of Anesthesia, Assiut University Hospital, Assiut, Egypt.
Mohmaed Shaaban
MS
Ali
Department of Cardiothoracic Surgery Department, Assiut University Hospital, Assiut, Egypt.
Sameh Abd Al Rhman
SA
Sayed
Department of Clinical Pathology Department, Assiut University Hospital, Assiut, Egypt.
Maged Salah
MS
Mohamoud
Departments of Anesthesia Assiut University Hospital, Assiut, Egypt.
Sayed Kaoud
SK
Abd-Elshafy
Departments of Anesthesia Assiut University Hospital, Assiut, Egypt.
Mohamed Gomaa
MG
Almaz
Cardiopulmonary bypass; jugular bulb oxygen saturation; rapid rewarming; slow rewarming