Articles: general-anesthesia.
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Comparative Study
The auditory steady state response during sufentanil anaesthesia.
The auditory steady state response (ASSR) is a sinusoidal evoked potential elicited by rapidly repeated auditory stimuli. The ASSR was recorded in eight patients during high-dose sufentanil anaesthesia for cardiac surgery in order to assess its usefulness as a measure of the level of consciousness. The electroencephalogram (EEG) was recorded for comparison. ⋯ The amplitude increased with early signs of awakening in the Intensive Care Unit. With few exceptions, changes in the simultaneously recorded EEG were similar to those of the ASSR. The ASSR deserves further evaluation as a tool for monitoring level of consciousness during high-dose opioid anaesthesia.
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One-hundred and ninety-two obese patients presented for upper abdominal surgery, of which 110 received general anesthesia with opioid analgesia and 82 patients received general anesthesia with opioid analgesia plus a single-shot intercostal nerve block of 0.5% bupivacaine in 1: 200,000 adrenaline. A significant increase in the time to first post-operative opioid dose and a significant reduction in the number of doses over the first 12 and 24 h periods were noted in the patients receiving intercostal nerve block.
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The aim of this study was to measure, in 11 patients with healthy lungs, active inspiratory impedance during anaesthesia. In addition, we recorded changes in inspiratory occlusion pressure at 100 ms (P0.1) and ventilatory pattern while awake and during anaesthesia with a mean inspiratory fraction (FI) of 0.017 halothane in O2. The total active inspiratory resistance and elastance values were 5.4 +/- 3.3 hPa.l.1.s and 29.9 +/- 6.2 hPa.l.1, respectively. ⋯ Respiratory frequency rose significantly from 12.2 +/- 1.5 (mean +/- SD) to 24.6 +/- 4.6 cycles.min-1, while tidal volume and inspiratory duty cycle lowered significantly from 0.599 +/- 0.195 l and 0.44 +/- 0.04 to 0.372 +/- 0.088 l (p less than 0.001) and 0.40 +/- 0.04 (p less than 0.05), respectively. Minute ventilation (VE) and VT/TI did not change significantly. During halothane anaesthesia with an FI:0.017, the increase in neuromuscular respiratory output appears to compensate for the increased mechanical load, thus resulting in maintenance of VE at levels similar to those of an awake state.
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One thousand patients who were anaesthetised between February and April 1990 at University Hospital, Nottingham were interviewed between 20 and 36 hours after their operation. Patients under 16 years of age, those who had undergone obstetric or intracranial surgery, those who were unable to communicate and patients who were discharged from hospital before the postoperative visit were not interviewed. A standard set of questions was used to determine the incidences of recall of events and dreams during the operation. These incidences were 0.2% and 0.9% respectively, considerably lower than reported in previous comparable studies.
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Stoma (Lisbon, Portugal) · Jun 1991
Comparative Study[Relation between foci of chronic oral infection, rheumatic fever and general or local anesthesia].
We make a study about Rheumatic fever diagnostical on boys who need an exeresis of bucals focus, which we make under general or local anaesthesia effects, and we verify the quantity of ASLO descent which depended on type of anaesthesia and the number of sessi that we make.