European journal of anaesthesiology
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This case report describes the peri-operative management of a 48-year-old woman with three cerebral aneurysms and phaeochromocytoma. The pharmacological and anaesthetic management of such patients is complex, and needs to be managed carefully by titrating anaesthetic agents and vasoactive drugs. The primary concern is the maintenance of cerebral perfusion pressure and autoregulation throughout the procedure, although these states cannot be monitored directly. The patient survived the operation neurologically intact, and it is presumed that the course of management which was chosen helped to achieve this result.
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Randomized Controlled Trial Clinical Trial
Effective dose of granisetron for the prevention of post-operative nausea and vomiting in patients undergoing laparoscopic cholecystectomy.
This study was undertaken to determine the minimum effective dose of granisetron, a selective 5-hydroxytryptamine type 3 receptor antagonist, for the prevention of post-operative nausea and vomiting (PONV) in female patients undergoing elective laparoscopic cholecystectomy. In randomized, placebo-controlled, double-blind study, 120 women were assigned to receive either placebo (saline) or granisetron at three different doses (20 micrograms kg-1, 40 micrograms kg-1 or 80 micrograms kg-1) intravenously immediately before the induction of anaesthesia. ⋯ Adverse effects post-operatively were not different among the groups. In conclusion, granisetron 40 micrograms kg-1 is the minimum effective dose in the prevention of PONV after laparoscopic cholecystectomy.
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Randomized Controlled Trial Comparative Study Clinical Trial
Pharmaco-economic evaluation of a disposable patient-controlled analgesia device and intramuscular analgesia in surgical patients.
The present study contrasted the pharmaco-economics and analgesic efficacy of intramuscular (i.m.) opioid treatment with a parenteral disposable patient-controlled analgesia (PCA) system in two groups of 20 female patients (ASA I-II, aged 35-69 years) scheduled for abdominal hysterectomy. The PCA group received a continuous infusion of 1.5 mg h-1 piritramide, a mu-opioid receptor agonist, with incremental doses of 1.5 mg (lock-out interval = 15 min). The i.m. group received 0.3 mg kg-1 piritramide i.m. when requested by the patient with a minimum interval of 5 h. ⋯ Both treatments initially provided comparable analgesia, but PCA was more efficient after 16 h and significantly reduced nursing time for pain treatment (PCA = 61 +/- 4 min, i.m. = 88 +/- 5 min; P < 0.001). Functional recovery was not different for either treatment. Cost analysis indicated a better cost-benefit ratio for the i.m. treatment (0.35 vs. 1.1 for PCA treatment), but a similar cost-effectiveness for both treatments (PCA = 1.9 Belgian Francs (BEF) unit-1 SPID; i.m. = 1.7 BEF unit-1 SPID).
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Randomized Controlled Trial Comparative Study Clinical Trial
Changes in plasma catecholamine concentrations and haemodynamic effects of rocuronium and vecuronium in elderly patients.
Rocuronium administration may cause tachycardia and an increase in cardiac index. Pancuronium, another steroidal non-depolarizing muscle relaxant, augments release of, and blocks re-uptake of catecholamines at adrenergic nerve endings. This study compared the haemodynamic effects of, and changes in catecholamine concentrations following administration of vecuronium (0.12 mg kg-1) or rocuronium (0.9 mg kg-1) to elderly patients. ⋯ Plasma noradrenaline concentrations were similar in the vecuronium and rocuronium groups prior to muscle relaxant administration (589(SD240) and 444(SD213) pg mL-1, respectively), 1 min after muscle relaxant administration (602(SD220) and 520(SD392) pg mL-1, respectively) and 1 min after tracheal intubation (597(SD351) and 440(SD181) pg mL, respectively). There was no significant change in either plasma noradrenaline or adrenaline concentrations in either group following muscle relaxant administration or tracheal intubation. The use of rocuronium (0.9 mg kg-1) in elderly patients does not result in a clinically significant change in heart rate, blood pressure or plasma catecholamine concentration.
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Randomized Controlled Trial Comparative Study Clinical Trial
Comparison of time course of neuromuscular blockade in young children following rocuronium and atracurium.
In order to compare the neuromuscular effects following rocuronium 0.6 mg kg-1 and atracurium 0.5 mg kg-1 30 children aged from 18 to 67 months were studied under the same anaesthetic conditions. After induction of anaesthesia with etomidate and fentanyl, neuromuscular blockade was monitored by recording the electromyographic response of the adductor pollicis muscle to a supramaximal train-of-four (TOF) stimulation of the ulnar nerve at 2 Hz for 2 s at 20-s intervals. Intubation was performed when more than 90% muscle relaxation was achieved, thereafter anaesthesia was maintained with 70% nitrous oxide in oxygen and isoflurane 0.5% end-tidal. ⋯ A statistically significant difference between rocuronium and atracurium also had been found for recovery of T1 to 50%, 75% and 90% as well as for the time taken to a TOF ratio of 70%. The recovery index for rocuronium and atracurium was not significantly different with 9.2 +/- 3.43 min and 10.9 +/- 2.65 min, respectively. Thus, rocuronium may be more advantageous than atracurium for short-lasting surgical procedures in young children.