Where subarachnoid haemorrhage in pregnancy is caused by rupture of an intracranial aneurysm, surgery is considered to be the treatment of choice, offering the best results for both mother and foetus. 1.2,3 CASE REPORT A 23-year-old, 65-kilogram primipara of 16 weeks' gestation presented with a generalised headache of sudden onset, vomiting and photophobia. Investigations revealed two aneurysms-one basilar, the other on the left middle cerebral artery. Epsilon amino caproic acid was given over the three days preceding surgery. With no evidence of cerebrovascular spasm and preoperative blood pressure in the range of 100/40 to 130/70 mmHg, planned clipping of both aneurysms was undertaken on the eleventh day after admission. At operation, a third aneurysm was found, small and thinwalled, anslllg from the left carotid bifurcation. All three aneurysms were clipped. Arterial blood pressure (BP) via a radial artery cannula, end-tidal carbon dioxide, arterial gas analysis (AGA) and body temperature were monitored. Blood sugar