Articles: general-anesthesia.
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Infusionsther Transfusionsmed · Oct 1993
[Monitoring intraoperative processing of acoustic stimuli with auditory evoked potentials].
130 Patients undergoing elective intra-abdominal, gynaecological, urological or cardiac surgery were studied after institutional approval and informed consent. In all patients auditory-evoked potentials (AEP) were recorded in the awake state and during general anaesthesia. Latencies of the peaks V, Na, Pa, Nb and P1 were measured. ⋯ During anaesthesia with receptor-specific anaesthetics, the brainstem peak V as well as the mid-latency components remain nearly unchanged compared with AEP from awake patients. This indicates that auditory stimuli reach the primary auditory cortex and are processed at a primary cortical level. With increasing doses of fentanyl one can observe only a significant decrease of amplitudes for the late component P1.(ABSTRACT TRUNCATED AT 250 WORDS)
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At present the in vitro caffeine-halothane contracture test is the only test to predict susceptibility to malignant hyperthermia (MH) with acceptable sensitivity and specificity. Anaesthesia is necessary for the excision of muscle bundles from the vastus lateralis muscle. MATERIAL AND METHODS. ⋯ Complete monitoring is necessary, even for this minor procedure: ECG, blood pressure, pulse oximetry, capnometry, measurement of body temperature and blood gas status. Differential diagnosis in negative test results. In patients who suffer an anaesthetic incident, the following disease must be considered: myopathies (especially the congenital myopathies and muscular dystrophies), respiratory problems due to pulmonary infection and obstruction, metabolic disorders of various origins, and the problem of masseter spasm.
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Randomized Controlled Trial Clinical Trial
The effects of different anesthetic regimens on fibrinolysis and the development of postoperative arterial thrombosis. Perioperative Ischemia Randomized Anesthesia Trial Study Group.
The purpose of this clinical trial was to compare the effects of different anesthetic and analgesic regimens on hemostatic function and postoperative arterial thrombotic complications. ⋯ Impaired fibrinolysis may be related causally to postoperative arterial thrombosis. Because RA combined with epidural fentanyl analgesia appears to prevent postoperative inhibition of fibrinolysis, this form of perioperative management may decrease the risk of arterial thrombotic complications in patients undergoing lower extremity revascularization.
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The laryngeal mask airway was used to facilitate fibreoptic bronchoscopy under general anaesthesia in 140 adult patients. Following placement, the position of the mask was observed through the fibreoptic bronchoscope. Three different positions were identified. ⋯ No problems with ventilation or maintenance of an acceptable airway were encountered. In one patient repositioning of the laryngeal mask was necessary to allow the passage of the bronchoscope. One patient developed laryngospasm and required tracheal intubation.