This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical, surgical and gynaecological illness complicating pregnancy, Subject name: Gynaecology & Obstetrics
Cause of convulsion in eclampsia: 
Select and explain. 
A. Cerebral anoxia due to aerial spasm, B. Hypovolemia, C. Hypocalcemia, D. Shock
A: Cerebral anoxia due to aerial spasm
Answer: A: Cerebral anoxia due to aerial spasm 
Explanation: Eclampsia may develop antepaum,intrapaum or postpaum.It is more common in the last trimester.It may be asymptomatic or preceded by the classical symptoms of prerclampsia.Eclampsia may be associated with the neurological deficit due to cerebral vasospasm and oedema but it usually resolves. TEXT BOOK OF OBSTETRICS,Sheila Balakrishnan,2nd edition,page no.266