“…13 In the study of Işıldak et al evaluating the use of cerebral oximetry in hypoperfusion monitoring in pediatric cardiac surgery; they concluded that intraoperative monitoring of perfusion with cerebral oximetry during congenital heart surgery is a valuable indicator and they also report that right and left cerebral oximetry values have fallen in cases of tissue oxygenation was impaired (ex: hypotension, hemodilution, hypovolemia, anemia) and they determined that the values were corrected when the precautions were taken. 20 In our study, rSO 2 values decreased to 58% and 59% in 2 patients during hypothermia (T3) period. In these cases, the pump flow was increased and cerebral oxygenation of the patients was kept above 60%.…”