The potentiation of depolarizing muscle-relaxants by propanidid.

Denervation supersensitivity: the response to depolarizing muscle relaxants.

The chemical theory of neuromuscular transmission (Dale, Feldberg and Vogt, 1936) is now almost universally accepted, and implicates acetylcholine as the neuromuscular transmitter. Depolarizing muscle relaxants act, at least initially, in a manner similar to acetylcholine and are believed to produce their effects by prolonged depolarization, but in certain situations these agents, instead of pr...

Changes in resistance to mouth opening induced by depolarizing and non-depolarizing neuromuscular relaxants.

Mouth opening was measured in 43 children anaesthetized with isoflurane and paralysed with vecuronium or suxamethonium. Measurements of mouth opening were made for up to 10 min after loss of the adductor pollicis twitch and cessation of muscle fasciculations. In 22 patients receiving suxamethonium, a significant (P less than 0.001) reduction in mean mouth opening occurred in the 60 s after loss...

Potentiation of vancomycin-induced histamine release by muscle relaxants and morphine in rats.

The intravenous injection of vancomycin sometimes causes anaphylactoid reactions, in which histamine release may play a major role. These reactions are more frequently manifested when vancomycin is injected into anesthetized patients. We examined the vancomycin-induced histamine release and the interaction of vancomycin with muscle relaxants or opioid in rats. In an in vitro study with rat peri...

Use of muscle relaxants.

Muscle Disorders and the Relaxants.

1 Muscle weakness is a feature of many illnesses but the present discussion will be confined mainly to conditions in which it is a manifestation of defects in the anterior horn cells, the motor nerves, the neuromuscular junction, or the muscle itself. The pathogenesis of these disorders is often ill-understood and more than one component of the neuromuscular system may be involved. Moreover, kn...