Muscle pain following administration of suxamethonium to pregnant and non-pregnant patients undergoing laparoscopic tubal ligation.

The frequency of muscle pain following suxamethonium was studied in 50 pregnant (8-13 weeks' gestation) and 100 non-pregnant women, undergoing laparoscopic tubal ligation. The incidence of muscle pain in the non-pregnant group was 42%, but only 20% in the pregnant women. The intensity of fasciculation was less in the pregnant patients. It appears that pregnancy protects the patient from suxamethonium pains, even during the first trimester.