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Randomized Controlled Trial Clinical Trial
Warm air sensation for assessment of block after spinal anaesthesia.
- J Shah, B T Ayorinde, D J Rowbotham, and D J Buggy.
- University Department of Anaesthesia, Leicester General Hospital, UK.
- Br J Anaesth. 2000 Mar 1;84(3):399-400.
AbstractWe have evaluated a new method of assessing dermatomal sensory levels after regional anaesthesia based on warm sensation. Sensory levels were assessed in 30 patients after spinal anaesthesia using a respiratory gas humidifier, adapted to deliver a constant flow of warm air at 40 +/- 0.2 degrees C. This was compared with the cold sensation from ethyl chloride spray. The frequency distribution of the dermatomal differences showed 96.6% of the comparisons were between +1 and -1 dermatomes. The median difference in dermatomal levels between the two methods of assessment was 0 (interquartile range 0-1) (P = 0.65). We conclude that the warm air method compares favourably with ethyl chloride spray and both can be used interchangeably.
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