Figure 2From: Red blood cell transfusion in patients with subarachnoid hemorrhage: a multidisciplinary North American surveyMinimum and maximum hemoglobin (Hb) concentrations which clinicians consider acceptable thresholds for a randomized trial. (A) Minimum acceptable transfusion threshold. (B) Maximum acceptable transfusion threshold. DCI, delayed cerebral ischemia. "Grade" refers to World Federation of Neurological Surgeons classification.Back to article page