Fig. 1From: Sleep apnea syndrome caused lowering of cerebral oxygenation in a hemodialysis patient: a case report and literature reviewTime course of SpO2 and cerebral rSO2 in a patient with obstructive SAS (a) and a patient without SAS (b). SpO2 peripheral arterial oxygen saturation, rSO2 regional saturation of oxygen, and SAS sleep apnea syndromeBack to article page