• Anesthesiology · Sep 1987

    Comparative Study

    Effect of an intubating dose of succinylcholine and atracurium on the diaphragm and the adductor pollicis muscle in humans.

    • J L Pansard, M Chauvin, C Lebrault, P Gauneau, and P Duvaldestin.
    • Anesthesiology. 1987 Sep 1; 67 (3): 326-30.

    AbstractThis study compares the neuromuscular blocking effect of succinylcholine (0.8 mg . kg-1) and atracurium (0.6 mg.kg-1) on the diaphragm (D) and the adductor pollicis (AP) in 20 patients anesthetized with nitrous oxide, oxygen, and fentanyl. The diaphragm was monitored by measuring transdiaphragmatic pressure following bilateral phrenic nerve stimulation. After succinylcholine, the time from injection of succinylcholine to maximum depression of the single twitch response (onset time) was of 50 +/- 11 s (+/- SD) for D compared to 80 +/- 24 s for AP (P less than 0.001). After succinylcholine, recovery from paralysis was earlier for D than AP. Single twitch height (TH) returned to 25% of its control value (T25) after 5 +/- 2 min for D compared to 7 +/- 3 min for AP (P less than 0.001). Complete recovery of TH (T100) was achieved after 9 +/- 4 min for D and 11 +/- 5 min for AP (P less than 0.01). Recovery index (T25-75) was of 2 +/- 1 min for both muscles. After atracurium, the onset time for D was of 137 +/- 31 s compared to 181 +/- 45 s for AP (P less than 0.001). The T25 was achieved after 38 +/- 7 min for D compared to 63 +/- 13 min for AP (P less than 0.001). The TH of D returned to T100 after 60 +/- 12 min compared to 87 +/- 17 min for AP (P less than 0.01). The train-of-four ratio returned to 1 after 64 +/- 15 min for D compared to 99 +/- 21 min for AP (P less than 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)

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