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Vecuronium

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1401. Accelerated onset of non-depolarizing neuromuscular blocking drugs: pancuronium, atracurium and vecuronium. A comparison with succinylcholine. (PubMed)

Accelerated onset of non-depolarizing neuromuscular blocking drugs: pancuronium, atracurium and vecuronium. A comparison with succinylcholine. The time of onset and degree of neuromuscular blockade (NMB) in 80 anaesthetized patients, following either a single bolus injection of pancuronium 0.95 mg kg-1, atracurium 0.53 mg kg-1 or vecuronium 0.07 mg kg-1, or divided doses of pancuronium 0.15 mg kg-1, atracurium 0.07 mg kg-1 or vecuronium 0.01 mg kg-1 administered 3 min or 5 min before the second (...) dose of pancuronium 0.08 mg kg-1, atracurium 0.46 mg kg-1 or vecuronium 0.06 mg kg-1, were determined and compared to the same parameters measured following succinylcholine administration (1 mg kg-1). The time to maximum NMB (100%) following the administration of succinylcholine was 58.1 +/- 5.3 s, whereas the time to maximum NMB (100%) following a single bolus injection of either pancuronium, atracurium or vecuronium was 130.6 +/- 22.2, 93.0 +/- 6.4, 127.5 +/- 13.0 s, respectively. These values

1988 European Journal of Anaesthesiology

1402. Comparison of effects of atracurium and vecuronium in cardiac surgical patients. (PubMed)

Comparison of effects of atracurium and vecuronium in cardiac surgical patients. To compare the cardiovascular effects of intubating doses of atracurium besylate and vecuronium bromide in cardiac surgical patients while utilizing fentanyl anesthesia, 20 patients scheduled for elective coronary artery bypass surgery were randomly assigned to two equal groups in a double-blind fashion. Two minutes after induction of anesthesia, baseline hemodynamic measurements were obtained and either atracurium (...) 0.5 mg/kg (group 1) or vecuronium 0.12 mg/kg (group 2) was administered as an intravenous bolus. Hemodynamic measurements were then repeated 2, 5, and 10 minutes after injection. Atracurium produced a statistically significant decrease in blood pressure at 2 minutes and a statistically significant increase in cardiac output and decrease in systemic vascular resistance at 2, 5, and 10 minutes. Vecuronium produced no statistically significant changes in any hemodynamic variable measured other than

1988 Anesthesia and analgesia

1403. Recovery of neuromuscular function and postoperative morbidity following blockade by atracurium, alcuronium and vecuronium. (PubMed)

Recovery of neuromuscular function and postoperative morbidity following blockade by atracurium, alcuronium and vecuronium. Recovery of neuromuscular function and postoperative morbidity were studied in 51 fit female patients who had nonemergency gynaecological laparoscopy as inpatients. They were allocated randomly to one of three groups to receive either atracurium 0.31 mg/kg, alcuronium 0.25 mg/kg, or vecuronium 0.06 mg/kg as part of an otherwise standard anaesthetic technique. There were (...) postoperative morbidity at up to 24 hours in each of the three groups. The only statistical difference in symptomatic morbidity was an increase in muscle weakness in those who received alcuronium compared with atracurium at 3 hours after laparoscopy. Only 25%, 20% and 31% of the patients who received atracurium, alcuronium and vecuronium respectively said that they would have liked to be day stay patients.

1988 Anaesthesia

1404. Comparison of large dose of vecuronium with pancuronium for prolonged neuromuscular blockade. (PubMed)

Comparison of large dose of vecuronium with pancuronium for prolonged neuromuscular blockade. Dose-duration relationships for vecuronium were determined and the duration of action produced by vecuronium 0.3 mg kg-1 shown to equal that of pancuronium 0.1 mg kg-1. Using these doses, the neuromuscular blocking properties and cardiovascular effects of the two drugs were compared. With large dose administration of vecuronium (0.3 mg kg-1), both the onset time (mean 81 s) and the 25-75% recovery (...) index (mean 13.9 min) were about one-half those associated with pancuronium (mean 168.5 s and 29.3 min, respectively). The duration of action until 25% recovery was similar with both drugs. There was no evidence of cardiovascular instability with the large dose of vecuronium. Heart rate, however, was significantly slower (range 89.7-94.2% of control) 2-20 min after the injection of vecuronium. Vecuronium 0.3 mg kg-1 may have more favourable neuromuscular blocking effects than pancuronium 0.1 mg kg-1

1988 British Journal of Anaesthesia

1405. [Vecuronium bromide: modification of its pharmacodynamics by etomidate, cimetidine and ranitidine]. (PubMed)

[Vecuronium bromide: modification of its pharmacodynamics by etomidate, cimetidine and ranitidine]. After obtaining their informed consent, 60 patients (ASA groups I or II), 18 to 60 years of age were randomly allocated to six groups of 10 persons each. Anesthesia was induced in groups 1, 4, 5 and 6 with 2-3 mg kg-1 thiopentone and in groups 2 and 3 with 0.2-0.3 mg kg-1 etomidate. 20 min before induction, patients in groups 3 and 5 received 5 mg kg-1 cimetidine, and patients in group 6 received (...) 1.25 mg kg-1 ranitidine. Induction of anesthesia was supplemented by 0.002 mg kg-1 fentanyl and 0.01 mg kg-1 lormetazepam. After beginning neuromuscular monitoring, 0.08 mg kg-1 vecuronium was injected and the intubation accomplished when the first twitch of the train of four (TOF) was suppressed of a rate greater than 90%. The anesthesia was maintained with supplemental doses of 0.002 mg kg-1 fentanyl and 0.01 mg kg-1 lormetazepam, if necessary, and the use of a nitrous oxide/oxygen mixture (2.4

1988 Der Anaesthesist

1406. Residual paralysis induced by either vecuronium or rocuronium after reversal with pyridostigmine. (PubMed)

Residual paralysis induced by either vecuronium or rocuronium after reversal with pyridostigmine. We investigated postoperative residual curarization after administration of either vecuronium or rocuronium with reversal by pyridostigmine in 602 consecutive patients without perioperative neuromuscular monitoring. On arrival in the recovery room, neuromuscular function was assessed both by acceleromyography in a train-of-four (TOF) pattern and also clinically by the ability to sustain a head-lift (...) for >5 s and the tongue-depressor test. Postoperative residual curarization was defined as a TOF ratio <0.7. One fifth of 602 patients (vecuronium, 24.7%; rocuronium, 14.7%) had a TOF <0.7 in the recovery room. There were no significant differences in the TOF ratios between 10 mg and 20 mg of pyridostigmine. The patients with residual block had several associated factors: the absence of perioperative neuromuscular monitoring, the use of pyridostigmine, which is less potent than neostigmine, a larger

2002 Anesthesia and Analgesia

1407. Administration of vecuronium, atracurium and pancuronium in divided doses: effect on onset and duration of action. (PubMed)

Administration of vecuronium, atracurium and pancuronium in divided doses: effect on onset and duration of action. The time to onset of neuromuscular block (as assessed by single twitch stimulation at 0.1 Hz) and the duration to 25% recovery of twitch height were measured after administration of vecuronium 0.1 mg kg-1, atracurium 0.5 mg kg-1 or pancuronium 0.1 mg kg-1, administered either as a single bolus or in divided doses, 10% being administered 4 min prior to the remaining 90 (...) %. The patients were anaesthetized with thiopentone, nitrous oxide in oxygen and i.v. fentanyl. There was no significant difference between the single- and divided-dose groups, either in the onset times (2.8 and 2.9 min for vecuronium, 2.7 and 2.4 min for atracurium and 3.3 min each for pancuronium for single- and divided-dose groups, respectively) or the duration to 25% recovery of twitch height (35 and 29 min for vecuronium, 45 and 39 min for atracurium and 87 and 93 min for pancuronium for single

1988 European Journal of Anaesthesiology

1408. Duration of action of vecuronium after an intubating dose of rapacuronium, vecuronium, or succinylcholine. (PubMed)

Duration of action of vecuronium after an intubating dose of rapacuronium, vecuronium, or succinylcholine. Rapacuronium (RAP) is a new, rapid-onset, short-duration, nondepolarizing neuromuscular blocker. If RAP is used to facilitate endotracheal intubation, what will the duration of a subsequent maintenance dose of vecuronium (VEC) be? We investigated the duration of action of a maintenance dose of VEC after intubation with RAP, VEC, or succinylcholine (SUC). Adult surgical patients under (...) % after VEC for the RAP, VEC, and SUC groups were 18.9 +/- 11.5, 21.5 +/- 8.03, and 12.8 +/- 8.4 min, and at T1 50% they were 21.5 +/- 9.1, 30.8 +/- 9.5, and 15.5 +/- 9.7 min (mean +/- SD), respectively (P < 0.001, RAP and VEC versus SUC). The duration of action of a maintenance dose of VEC was similar after an intubating dose of RAP or VEC but was shortened when preceded by an intubating dose of SUC.The duration of action of a maintenance dose of vecuronium was longer after an endotracheal intubating

2001 Anesthesia and analgesia

1409. A double-blind comparison of vecuronium administered by the Springfusor infusion device to vecuronium by intermittent bolus injection in critically ill adult patients. (PubMed)

A double-blind comparison of vecuronium administered by the Springfusor infusion device to vecuronium by intermittent bolus injection in critically ill adult patients. To evaluate the Springfusor infusion device for clinical use in an Intensive Care Unit and to compare the technique of intermittent bolus and constant infusion of muscle relaxants, we undertook a prospective double-blind randomized placebo-controlled study. Twenty critically ill ventilated patients requiring muscle paralysis were (...) investigated. Although we could show no clinical advantage in infusing vecuronium, the Springfusor provided a more constant level of paralysis compared with hourly bolus doses. The device is robust, easy to use and reduces nursing workload. This may translate into cost-saving improvement in patient care if the Springfusor is used to provide muscle relaxation, sedation and analgesia.

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1994 Anaesthesia and intensive care

1410. Quantifying the interaction of vecuronium with enflurane using closed-loop feedback control of vecuronium infusion. (PubMed)

Quantifying the interaction of vecuronium with enflurane using closed-loop feedback control of vecuronium infusion. The influence of different levels of enflurane anaesthesia on infusion requirements of vecuronium was studied in 40 adult surgical patients. Ninety percent neuromuscular block was maintained by computer controlled infusion of vecuronium. During the first 90 min study period all patients received fentanyl-nitrous oxide-oxygen (2:1) anaesthesia. For the following 90 min the patients (...) were randomly assigned to receive enflurane at different end-tidal concentrations: group I, control, fentanyl-nitrous oxide anaesthesia; group II, enflurane 0.3%-nitrous oxide; group III, enflurane 0.6%-nitrous oxide; group IV, enflurane 0.9%-nitrous oxide. Every patient served as his/her own control and the changes of vecuronium infusion requirements were determined individually. When the administration of enflurane was started, vecuronium infusion requirements decreased progressively until 90 min

1995 Acta Anaesthesiologica Scandinavica

1411. Comparison between the continuous infusion of vecuronium and the intermittent administration of pancuronium and vecuronium. (PubMed)

Comparison between the continuous infusion of vecuronium and the intermittent administration of pancuronium and vecuronium. The neuromuscular blocking effects of repeated bolus injections of pancuronium, or vecuronium, and of the continuous infusion of vecuronium have been compared in 36 patients by means of evoked twitch tension. Groups I and II received a loading dose (0.075 mg kg-1) of pancuronium or vecuronium, respectively, followed by 0.015-mg kg-1 maintenance doses when twitch tension (...) had recovered to 25% of control. Group III received a 0.075-mg kg-1 loading dose of vecuronium plus a continuous infusion (commenced simultaneously) delivering 0.075 mg kg-1 h-1. With repeated injections of pancuronium (group I) or vecuronium (group II), the durations of blockade to 25% recovery were 64 and 25 min, respectively. Maintenance doses had to be injected every 42 min with pancuronium and every 12 min with vecuronium. The recovery times from 25% to 75% of control twitch tension were 44 v

1984 British Journal of Anaesthesia

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