• G Attilakos, D Psaroudakis, J Ash, R Buchanan, C Winter, F Donald, L P Hunt, and T Draycott.
• Directorate of Women's and Children's Health, Southmead Hospital, North Bristol NHS Trust, Bristol, UK. georgeattilakos@doctors.org.uk
• BJOG. 2010 Jul 1;117(8):929-36.

ObjectiveTo compare the effectiveness of carbetocin and oxytocin when they are administered after caesarean section for prevention of postpartum haemorrhage (PPH).Study DesignDouble-blind randomised single centre study (1:1 ratio).SettingTeaching hospital in Bristol, UK with 6000 deliveries per annum.PopulationWomen at term undergoing elective or emergency caesarean section under regional anaesthesia, excluding women with placenta praevia, multiple gestation and placental abruption.MethodsWomen were randomised to receive either carbetocin 100 microg or oxytocin 5 IU intravenously after the delivery of the baby. Perioperative care was otherwise normal and use of additional oxytocics was at the discretion of the operating obstetrician. Analysis was by intention to treat.Primary Outcome MeasureThe proportion of women in each arm of the trial that needed additional pharmacological oxytocic interventions.ResultsSignificantly more women needed additional oxytocics in the oxytocin group (45.5% versus 33.5%, Relative risk 0.74, 95% CI 0.57-0.95). The majority of women had oxytocin infusions. There were no significant differences in the secondary outcomes, including major PPH, blood transfusions and fall in haemoglobin.ConclusionsCarbetocin is associated with a reduced use of additional oxytocics. It is unclear whether this may reduce rates of PPH and blood transfusions.

This article appears in the collection: Carbetocin at Cesarean Section.

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