Facilitation of mechanical ventilation of the lungs using an infusion of vecuronium in 11 infants and children and four neonates in an intensive care unit is described. A loading dose of vecuronium of 0.1 mg.kg-1 was followed by an infusion at an initial rate of 0.1 mg.kg-1.hr-1. The infusion rate was adjusted to maintain a neuromuscular block of approximately 90% as assessed by the presence of...

We have determined the relative potency of rocuronium, pancuronium, pipecuronium and vecuronium, and examined the nature of the interaction of rocuronium with the other three steroidal neuromuscular blocking drugs. We studied the dose-response relationships of each drug and their combination with rocuronium in 200 ASA I or II patients during propofol-fentanyl-nitrous oxide-oxygen anaesthesia. N...

We have examined the sensitivity of the geniohyoid, an upper airway dilating muscle, to vecuronium in 12 anaesthetized dogs undergoing mechanical ventilation of the lungs and compared it with that of the diaphragm. Dogs were allocated randomly to two groups: pentobarbitone alone (group 1, n = 7); pentobarbitone combined with 0.2 MAC (0.44%) of enflurane anaesthesia (group 2, n = 5). Supramaxima...

Neuromuscular block and postoperative recovery of grip strength and peak expiratory flow (PEF) were compared in patients receiving atracurium or vecuronium administered by continuous infusion or intermittent bolus doses. The same total dose of atracurium (0.92-0.98 mg kg-1) or vecuronium (0.16-0.18 mg kg-1) was given by both methods. A similar degree of neuromuscular block was attained in all g...

The effect of atracurium or vecuronium on the depolarization phase of the evoked compound action potential of the adductor pollicis has been investigated in 30 adult patients. Patients were studied using single supramaximal stimulation of the ulnar nerve at the wrist. The evoked compound action potential was measured over the adductor pollicis muscle. When blockade by atracurium exceeded 80%, a...

Patients given combinations of non-depolarizing neuromuscular blocking drugs have been reported to recover from neuromuscular block more rapidly than patients given a single drug. This study was designed to assess if this phenomenon occurred with the combination of atracurium and vecuronium. During nitrous oxide-fentanyl anaesthesia, 30 adult patients were allocated randomly to receive atracuri...

Recently, a technique for facilitating rapid tracheal intubation — with the aid of nondepolarizing neuromuscular blocking drugs — has been described by Schwarz and colleagues (1985) using vecuronium. This method (priming) consists of the administration of a small dose of non-depolarizing blocker before induction, allowing sufficient time for the drug to reach the receptors and then the administ...

Objective: The key objective of the study is to compare Propofol-based total intravenous anaesthesia (TIVA) with Isoflurane-based inhalational for controlled hypotension during functional endoscopic sinus surgery (FESS). Materials and Methods: This a prospective randomized, single-blinded clinical study. involved 40 patients posted elective FESS surgery, selected randomly from ENT department. A...

The muscle-type nicotinic acetylcholine receptor has two nonidentical binding sites for ligands. The selectivity of acetylcholine and the competitive antagonists (+)-tubocurarine and metocurine for adult mouse receptors is known. Here, we examine the site selectivity for four other competitive antagonists: cisatracurium, pancuronium, vecuronium, and rocuronium. We rapidly applied acetylcholine ...

Mivacurium chloride (BW B1090U) is a new, short-acting non-depolarizing neuromuscular blocking agent. It is a synthetic bis-benzylisoquinolinium diester, which is hydrolysed rapidly by plasma cholinesterase. This study compares mivacurium, atracurium and vecuronium by continuous i.v. infusion. The duration of mivacurium infusion ranged from 29.5 to 286 min. The steady state infusion rates neces...