British Journal of Anaesthesia, Vol 83, Issue 2 338-339, Copyright © 1999 by The Board of Management and Trustees of the British Journal of Anaesthesia
C. Van Oldenbeek, P. Knowles and NJN. Harper
We studied 20 adult patients undergoing cardiac surgery. All received
pancuronium as the sole neuromuscular blocking drug and no reversal agent
was used. In the postoperative intensive care unit, mechanical ventilation
was continued and patients were sedated with an infusion of propofol.
Neuromuscular block was measured electromyographically at appropriate
intervals until the train-of-four ratio (TOF) reached 0.8. At the time when
the propofol infusion would normally be discontinued, 13 patients (65%)
demonstrated a TOF of less than 0.8 (group median 0.23, interquartile range
0.11-0.6). Subsequently, the median time to achieve a TOF of 0.8 was 2 h 10
min (interquartile range 1 h-2 h 25 min). We found that if pancuronium was
used during cardiac surgery, a significant proportion of patients remained
partially paralysed when they would normally be allowed to emerge from
anaesthesia in the ICU.
SHORT COMMUNICATIONS
Residual neuromuscular block caused by pancuronium after cardiac surgery
Department of Anaesthesia, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK
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