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Acta Anaesthesiol Scand · Oct 1986
Randomized Controlled Trial Clinical TrialAnaesthetic temperature and shivering in epidural anaesthesia.
- J Ponte, B J Collett, and A Walmsley.
- Acta Anaesthesiol Scand. 1986 Oct 1;30(7):584-7.
AbstractThe mechanism of shivering during epidural analgesia remains unclear. This study investigates the role of the temperature of the local anaesthetic injected extradurally. Forty patients admitted for elective caesarean section under epidural anaesthesia were studied; 20 were given bupivacaine warmed to 37 degrees C (warm group) and 20 were given bupivacaine stored at 4 degrees C (cold group); the occurrence of shivering in both groups was recorded. The overall incidence of shivering was 27.5%; two patients of the warm group and nine patients of the cold group shivered. This difference was statistically significant (P less than 0.03). The results suggest that there are thermosensory mechanisms in the human spinal canal. In our view, epidural anaesthetic solutions should be warmed to body temperature prior to injection to reduce the incidence of shivering.
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