Annales françaises d'anesthèsie et de rèanimation
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Ann Fr Anesth Reanim · Jan 1995
Comparative Study Clinical Trial Controlled Clinical Trial[Cerebrovascular reactivity to CO2 during general anesthesia maintained with either isoflurane-N2O or propofol-N2O. A comparative study by transcranial Doppler velocimetry].
To compare, using transcranial doppler velocimetry (TDV), the cerebral blood flow velocity and CO2 reactivity during general anaesthesia maintained with either isoflurane-N2O-O2(IF) or propofol-N2O-O2 (PF) in adults with a normal brain. ⋯ During anaesthesia maintained with either isoflurane-N2O-O2 or propofol-N2O-O2, a change in PetCO2 results in similar changes in VS and VD. These anaesthetic agents preserve the cerebrovascular reactivity of the normal brain. The results of this study are in accordance with those obtained with other reference techniques in healthy volunteers. Transcranial doppler velocimetry can be a useful noninvasive tool of clinical research in neuroanaesthesia.
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Ann Fr Anesth Reanim · Jan 1995
Comparative Study[Measurement of tympanic temperature by infrared and thermocouple thermometry. A comparative study].
To compare tympanic temperatures obtained with an infrared thermometer Core Check 2090A (IVAC), non in contact with the tympanic membrane, to values obtained with a thermocouple thermometer Mon-A-Therm (Mallinckrodt) in contact with it, and to assess whether the differences depend on the person measuring the temperature. ⋯ As compared to the thermocouple thermometry, infrared thermometry has no bias but a low precision. The measurement error does not allow the recognition of hypothermia in 6% of patients. The error may be made by the measuring person and/or related to the anatomy and the patency of the external acoustic meatus. Tympanic infrared thermometry seems to be a convenient method for temperature measurements at short time intervals in the recovery room, provided its limitations are kept in mind.
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Ann Fr Anesth Reanim · Jan 1995
Case Reports[Interscalenic block: accidental catheterization of the epidural space].
A case is reported of inadvertent insertion of a brachial plexus catheter into the cervical epidural space, at the sitting of an interscalene block for postoperative analgesia, during the recovery from general anaesthesia after surgical repair of a rupture of the rotator cuff of the shoulder. No features of cervical epidural anaesthesia were seen after the first injection of local anaesthetic, as it was made through the catheter insertion cannula. ⋯ The X-ray obtained after catheter opacification showed the penetration of contrast medium into the epidural space. In our case, two out of the three means of prevention of this complication were not possible: a) sitting of the interscalene block before induction of anaesthesia, as the insertion conditions of the catheter are better in a conscious, sitting patient; b) adequate cannula orientation (namely medial, dorsal and slightly caudal); c) routine X-ray control of the catheter position before the first injection, associated with careful clinical monitoring for 30 min after each local anaesthetic injection.
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Ann Fr Anesth Reanim · Jan 1995
[Combination of propofol-sufentanil on somatosensory evoked potentials in surgery of the spine].
Most anaesthetics depress cortical somatosensory evoked potentials (CSEPs). However, the modification of CSEPs during total intravenous anaesthesia using propofol remaining still unknown, justified this trial. ⋯ Total intravenous anaesthesia with propofol and sufentanil induces a small but stable lengthening of CSEPs latency and a stable decrease of its amplitude, which enable an appropriate monitoring of CSEPs during spine surgery.
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Ann Fr Anesth Reanim · Jan 1995
Clinical Trial[Continuous administration of mivacurium for short procedures. Delayed onset and recovery from neuromuscular blockade].
To assess the delays of onset and spontaneous recovery from neuromuscular block produced by mivacurium administered by continuous infusion for short procedure requiring a deep relaxation. ⋯ Mivacurium in continuous infusion provides rapidly a deep and stable neuromuscular blockade followed by a rapid spontaneous restoration of neuromuscular transmission in patients with normal pseudocholinesterases.