Effect of Ampicillin on Idiopathic Premature Labor in Teaching Hospital in Tehran, 1995

In clinical trial study, effect of ampicillin on idiopathic premature labor in 16 hospitals for 4 months from 74/09/30 was evaluated. (Tehran, 1995). Cases (30 subjects) have received ampicillin, but controls (30 subjects) didn't receive it. In two groups, maternal age, gestational age, parity, vaginal examination (lillatation & effacement), uterine contractions within 10 minutes, tocolytic drugs, presentation was matched. Following receiving ampicillin, we followed 2 & 4 weeks later evaluating dillatation & effacement, uterine contraction with 10 minutes. Results showed that 6.7  % of cases, but 66.7% of controls uterine contractions didn't stop. There was 15.7 days in cases and 5.2 days in controls delaying in delivery.