Awareness following different techniques of general anaesthesia for caesarean section.
Using the isolated arm technique, the frequency of awareness was evaluated in 50 full-term patients undergoing elective Caesarean section under general anaesthesia. In 20 patients, anaesthesia was induced with thiopentone 4 mg kg-1, and in the other 30 patients, induction was with ketamine 1.5 mg kg-1. Following suxamethonium 1.5 mg kg-1 and tracheal intubation, anaesthesia was supplemented during the induction-delivery period in the thiopentone group with 50% nitrous oxide and 0.5% halothane in oxygen in 10 patients, and with 1% halothane in 100% oxygen in the other 10 patients. In the ketamine group, the patients underwent ventilation with 50% nitrous oxide and 0.5% halothane in oxygen in 10 patients, with 1% halothane in 100% in 10 patients, and with 100% oxygen only in the last 10 patients. Awareness was significantly greater after induction with thiopentone (14/20) than after ketamine (4/30). There were no significant differences in Apgar scores or umbilical vein blood-gas values in the newborns.
Baraka
A
A
Department of Anesthesiology, American University of Beirut, Lebanon.
Louis
F
F
Noueihid
R
R
Diab
M
M
Dabbous
A
A
Sibai
A
A
D000768:Anesthesia, General / Q000379:methods*; D000773:Anesthesia, Obstetrical / Q000379:methods*; D001034:Apgar Score; D001364:Awareness; D002245:Carbon Dioxide / Q000097:blood; D002585:Cesarean Section; D003071:Cognition; D005260:Female; D005312:Fetal Blood; D006439:Hemodynamics; D006801:Humans; D007231:Infant, Newborn; D007649:Ketamine; D010100:Oxygen / Q000097:blood; D011247:Pregnancy; D013874:Thiopental
D002245:Carbon Dioxide; D007649:Ketamine; D013874:Thiopental; D010100:Oxygen