Which of the following is the most common cause of the neurological deterioration in case of cerebrovascular accident?: (A) Rebleeding, (B) Vasospasm, (C) Embolism, (D) Hydrocephalus
Answer is B. Vasospasm Narrowing of the aeries at the base of the brain following SAH occurs regularly. This vasospasm causes symptomatic ischemia and infarction in approximately 30% patients and is the major cause of delayed morbidity or deathQ. Sign of ischemia appear 4-14 days after the hemorrhage, most frequently at about 7 daysQ.