2.Objective: To evaluate the capability of sodium nitroprusside (SNP) in reversing delayed cerebral vasospasm (DCV) after subarachnoid hemorrhage (SAH), when administered into cisternamagna.
3.The transcerebellar (or suboccipitobregmatic) iew allows examination of the mid-brain and posterior fossa; this iew is used for measurement of the transerse cerebellar diameter (TCD) and cisternamagna (CM).