Randomised, double-blinded placebo controlled trial of the use of tocolysis for a repeat external cephalic version after a failed version for breech presentation at term

INTERVENTION: 1. 50 mg ritodrine hydrochloride infusion 2. 17 ml dextrose saline solution infusion CONDITION: Childbirth ; Pregnancy and Childbirth ; Other assisted single delivery PRIMARY OUTCOME: 1. Incidence of cephalic presentation at delivery; 2. Subjective patient assessment of discomfort; 3. Incidence of caesarian section; 4. Length of hospital stay; 5. Incidence of neonatal Apgar scores <7 at 5 minutes; 6. Incidence of neonatal intensive care admission SECONDARY OUTCOME: Not provided at time of registration INCLUSION CRITERIA: 1. Women with suspected or confirmed breech presentation at >36 weeks gestation 2. Have undergone a single (<15 mins) unsuccessful attempt at external cephalic version without tocolysis at 37 or more weeks' gestation