Abstract:
:The result of 42 blood volume determinations made with autologous red blood cells labeled with chromium-51 are reported. The subjects consisted of 11 control patients and 25 patients with recent subarachnoid hemorrhage (SAH). The mean red blood cell volume (RBCV) and the total blood volume (TBV) for female patients after SAH were significantly lower than corresponding control values (P less than 0.01). No depression of blood volume was found in males as a group. Seventy-two per cent of females had below-normal RBCV and 50% had below-normal TBV. Fifteen patients demonstrated angiographic vasospasm or signs of cerebral ischemia. Only 1 patient with asymptomatic vasospasm had a below-normal RBCV or TBV, whereas 6 of 7 patients with symptomatic vasospasm had a subnormal RBCV or TBV. The mean RBCV and mean TBV for female patients with symptomatic vasospasm were significantly lower than corresponding control values (P less than 0.02) and lower than values for female patients with asymptomatic vasospasm (P less than 0.05). The data suggest that volume status may be the important differential between asymptomatic and symptomatic vasospasm. Delayed ischemic deficits can be expected to develop in patients who have both spasm of the intracranial vessels and decreased TBV. Patients with normal blood volume are far less likely to experience cerebral ischemia, even if vasospasm develops.
journal_name
Neurosurgeryjournal_title
Neurosurgeryauthors
Solomon RA,Post KD,McMurtry JG 3rddoi
10.1227/00006123-198409000-00010subject
Has Abstractpub_date
1984-09-01 00:00:00pages
354-61issue
3eissn
0148-396Xissn
1524-4040journal_volume
15pub_type
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