Intravenous ketamine for prevention of severe hypotension during spinal anaesthesia

@article{Hemmingsen1991IntravenousKF,
  title={Intravenous ketamine for prevention of severe hypotension during spinal anaesthesia},
  author={C. Hemmingsen and J. Nielsen},
  journal={Acta Anaesthesiologica Scandinavica},
  year={1991},
  volume={35}
}
Spinal block causes paralysis of preganglionic sympathetic fibres, while ketamine induces activation of the sympathetic nervous system. Hypotension is a frequent complication during spinal anaesthesia and is associated with an increased risk of postoperative mortality. The aim of our study was to compare circulatory changes in patients who received either fentanyl or ketamine during spinal anaesthesia. Thirty patients (ASA I‐III) scheduled to undergo spinal anaesthesia for osteosynthesis of hip… 
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