Intravenous infusion of paracetamol for intrapartum analgesia

Aim To evaluate the efficacy and adverse effects of an i.v. infusion of paracetamol during the active phase of labor as compared with sterile water (placebo) as a method for intrapartum analgesia. Methods In a triple‐blind, randomized, placebo‐controlled trial, 120 low‐risk primiparous women presenting in active labor at Ain Shams University Maternity Hospital, Cairo, Egypt, between August 2011 and October 2012, were allocated to receive either 1000 mg i.v. of paracetamol (n = 60) or sterile water (n = 60). The primary outcomes were the efficacy of the drug to supply adequate analgesia as measured by a change in the visual analog scale (VAS) pain intensity score at various time points after drug administration and the need for additional rescue analgesia. The secondary outcomes included the presence of adverse maternal or fetal events. Results Compared to controls, i.v. infusion of paracetamol was associated with significantly lower VAS score 15 and 30 min after the start of medication; also, there was a significantly lower incidence of need for rescue medication (8/57 [14%] vs 49/59 [83.1%], P