It is unclear whether routine addition of intra-operative forced-air warming in addition to warmed intravenous fluids during cesarean delivery under spinal anesthesia is beneficial. In this single-center randomized trial, we aim to test the primary null hypothesis that our current protocol of warmed intravenous fluids is similar to a combination of warmed intravenous fluids with intra-operative lower-body forced-air warming to maintain maternal temperature after cesarean delivery under spinal anesthesia. We also aim to assess the rate of maternal shivering during and after the procedure between the two groups, the maternal thermal comfort score, neonatal Apgar scores and umbilical pH levels. If we demonstrate no clinically important difference between the two interventions, clinicians will be able to continue our current protocol of warmed intravenous fluids only during cesarean delivery.
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The mean core temperature
Timeframe: baseline, immediately before spinal anesthesia, 60 minutes following spinal anesthesia and then every 30 minutes for 2 hours (last measurement prior to discharge)