Department of Anesthesiology

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Combination of pancuronium and metocurine: neuromuscular and hemodynamic advantages over pancuronium alone.

TitleCombination of pancuronium and metocurine: neuromuscular and hemodynamic advantages over pancuronium alone.
Publication TypeJournal Article
Year of Publication1981
AuthorsLebowitz PW, Ramsey FM, Savarese JJ, Ali HH, deBros FM
JournalAnesth Analg
Volume60
Issue1
Pagination12-7
Date Published1981 Jan
ISSN0003-2999
KeywordsBlood Pressure, Drug Synergism, Female, Heart Rate, Hemodynamics, Humans, Muscle Contraction, Muscle Relaxation, Neuromuscular Blocking Agents, Neuromuscular Junction, Pancuronium, Tubocurarine
Abstract

Combination of pancuronium and metocurine or pancuronium and d-tubocurarine produces potentiation of neuromuscular blocking effects such that administration of relatively small doses of these drugs can yield clinically effective neuromuscular blockade. The clinical characteristics of the block produced in A.S.A. class I-II patients during N2O-narcotic-thiopental anesthesia by the pancuronium-metocurine combination at the calculated ED95 (N = 8) and at twice the ED95 (N = 9) were compared with the block produced by pancuronium alone at its ED95 (N = 20) and at twice the ED95 (N = 6). Onset time (from drug injection to 95% twitch suppression) and the maximum twitch depression achieved were comparable between corresponding groups, but the 25% recovery time (from drug injection to 25% recovery of twitch height) was significantly shorter in the groups that received the pancuronium-metocurine combination. Furthermore, at twice the ED95, heart rate increased significantly more in the pancuronium group than in the pancuronium-metocurine combination group. Mean systemic blood pressure did not change significantly in either group. We conclude that patients given a combination of pancuronium and metocurine in large doses experience less hemodynamic change and more rapid recovery of neuromuscular function than do patients given equivalent doses of pancuronium alone.

Alternate JournalAnesth. Analg.
PubMed ID7192943