Der Anaesthesist
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Randomized Controlled Trial Comparative Study Clinical Trial
[Anesthesia in geriatric patients. The determination of physiological variables for cognitive function in geriatric patients after regional or general anesthesia].
The aim of the present study was to show the influence of the parameters of gas exchange (arterial oxygen pressure paO2, arterial oxygen saturation SatO2) and haemodynamics (arterial systolic and mean blood pressure RRs and MAP) on the restitution of cognitive functions in geriatric patients scheduled for elective hip arthroplasty. ⋯ The restitution of cognitive functions during the first three postoperative days in geriatric patients scheduled for elective hip surgery does not depend on the anaesthetic technique. According to our results regional anaesthesia does not show any advantage for geriatric patients undergoing elective hip arthroplasty.
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Randomized Controlled Trial Clinical Trial
[Remifentanil and alfentanil: Sympathetic-adrenergic effect in the first postoperative phase in patients at cardiovascular risk].
Extubation and the immediate postoperative period are critical periods with strong sympatho-adrenergic stimulation. The aim of the present study was to investigate this period after balanced anaesthesia with remifentanil and alfentanil in cardiac risk patients. ⋯ After balanced anaesthesia with remifentanil a more pronounced sympatho-adrenergic stimulation occurs because of the more rapid clearance of the analgesic effect in the recovery period compared to alfentanil requiring more analgesics and medications for the control of the haemodynamic parameters. Because of these specific pharmacological effects the use of remifentanil in cardiac risk patients has to be critically discussed.
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Randomized Controlled Trial Clinical Trial
[Rocuronium for anesthesia induction in elective procedures. Time course of muscular blockade and intubation after administration of 2-compartment ED95 (0.6 mg/kg) and dose reduction (0.4 mg/kg)].
Rocuronium is a non-depolarising neuromuscular blocking agent structurally related to vecuronium. The compound has a rapid onset and an intermediate duration of action. The rapid onset is of importance in patients at risk for pulmonary aspiration, for elective induction of anaesthesia slower onset properties generally are accepted. In this context, we asked whether the induction dose of rocuronium may be reduced to doses smaller than 2 x ED95 in situations in which slower onset properties may be acceptable. ⋯ In the present study dose reduction from 0.6 mg/kg rocuronium to 0.4 mg/kg rocuronium led to a slower onset and reduced clinical duration. However, the intubating conditions, evaluated 3 min after injection of the muscle relaxant were comparable. This offers new possibilities for muscle relaxation for surgical or diagnostic procedures of short duration and may reduce costs.
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Randomized Controlled Trial Comparative Study Clinical Trial
[Postoperative nausea and vomiting following stabismus surgery in children. Inhalation anesthesia with sevoflurane-nitrous oxide in comparison with intravenous anesthesia with propofol-remifentanil].
Postoperative nausea and vomiting (PONV) is still one of the major problems in strabismus surgery, especially in children. In recent years many studies have been published, suggesting that choosing propofol as the anaesthetic agent may help to reduce the high incidence of PONV in children undergoing strabismus surgery. Experience with remifentanil in children is still very limited and little is known, whether propofol in combination with this new short acting opioid is also superior regarding PONV in squint surgery compared to sevoflurane/N2O. Additionally, little is known, whether the type of operation or the muscle which is operated on has any influence with respect to PONV. ⋯ TIVA with propofol/remifentanil proved to be a suitable form of anaesthesia for children in this setting. Propofol showed advantages over sevoflurane/N2O with respect to PONV after squint surgery in children also when applied in the combination with remifentanil. TIVA with propofol/remifentanil may therefore be one way to reduce the high incidence of PONV in this setting, bearing in mind, that PONV is not only influenced by the regimen of the general anaesthesia but rather by the combination of many other factors, in particular the type of operation.
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Randomized Controlled Trial Clinical Trial
[The effect of low droperidol dosages on postoperative anxiety, internal tension, general mood and PONV].
Droperidol even in low doses such as 0.5 mg to 1.25 mg can increase postoperative anxiety and state of tension. The aim of this study was to determine whether these side effects occur frequently following low-dose droperidol and to see whether these are dose related. ⋯ In gynaecological laparoscopy under general anaesthesia with tracheal intubation, we recommend droperidol 0.625 mg in the prevention of PONV, as it reduces PONV as well as 2.5 mg with no severe sedation in this dosage. Psychological side effects did not occur more frequently after droperidol compared to placebo in any of the investigated dosages.