Articles: general-anesthesia.
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Review Case Reports
Tympanic membrane rupture following general anesthesia with nitrous oxide: a case report.
Although rare, tympanic membrane rupture during general anesthesia with nitrous oxide has been reported previously in the literature. Nitrous oxide administration and the effects on closed body cavities will be reviewed. Key factors in patient assessment which can determine safe use of nitrous oxide in the clinical setting will also be discussed.
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Anesthesia and analgesia · Feb 1995
Randomized Controlled Trial Clinical TrialEfficacy of an epidural test dose in adult patients anesthetized with isoflurane: lidocaine containing 15 micrograms epinephrine reliably increases arterial blood pressure, but not heart rate.
When continuous epidural anesthesia is combined with general anesthesia, the only objective sign of intravascular migration of the epidural catheter are the increments of heart rate (HR) or arterial blood pressure after a local anesthetic test dose containing epinephrine. However, the efficacy of a simulated intravenous (IV) test dose in adult patients under general anesthesia has not been determined. Thirty adult patients were randomly assigned to one of two groups, each of which was anesthetized with 1% end-tidal isoflurane and nitrous oxide after endotracheal intubation. ⋯ In the epinephrine group, significant increases in HR compared with the baseline value were observed from 40 to 80 s after the IV test dose with a mean maximum HR increase of 24 +/- 2 bpm (mean +/- SEM) occurring at 48 +/- 3 s. However, 5 of 15 patients in the epinephrine group developed HR increments smaller than 20 bpm (sensitivity 67%). Since HRs were essentially unchanged in the saline group, specificity, positive predictive value (+PV), and negative predictive value (-PV) were 100%, 100%, and 75%, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
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J. Oral Maxillofac. Surg. · Feb 1995
Clinical TrialPropofol infusion technique for outpatient general anesthesia.
The purpose was to evaluate the suitability of a continuous propofol infusion in combination with alfentanil for outpatient general anesthesia in an oral and maxillofacial surgery practice. ⋯ This anesthetic technique has numerous advantages with minimal side effects, and should be considered for routine use for outpatient general anesthesia in oral and maxillofacial surgery.
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Int J Clin Monit Comput · Feb 1995
Comparative Study Clinical Trial Controlled Clinical TrialNoninvasive continuous blood pressure measurement during anaesthesia: a clinical evaluation of a method commonly used in measuring devices.
The objective of the study was assess the utility during anaesthesia of noninvasive continuous blood pressure measurement techniques which use intermittent oscillometric blood pressure measurement for their calibration. The assessment was performed by comparing noninvasive blood pressure with intra-arterial blood pressure. The noninvasive blood pressure measurement device used for evaluation was the NCAT N-500 which uses tonometry for its continuous measurements. ⋯ Correlation of dynamic behavior was lower for OTBP than for ITBP. A significant effect of site difference between calibration measurements and continuous measurements was not found. It is concluded that the approach of continuous noninvasive blood pressure measurement based on the combination of two different measurement methods, in which the continuous method is calibrated by the oscillometric method, lead to clinical unacceptable accuracy and agreement in the patient group studied.
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Anasthesiol Intensivmed Notfallmed Schmerzther · Feb 1995
Randomized Controlled Trial Clinical Trial[Nausea and vomiting after gynecologic laparoscopies].
To investigate the occurrence of postoperative nausea and vomiting (PONV) in relation to the menstrual cycle in patients anaesthetised with isoflurane and propofol. ⋯ The incidence of PONV is significantly higher when patients undergo laparoscopy during the first 8 days of the menstrual cycle. When compared to isoflurane, propofol results in a significantly lower incidence of PONV and postoperative shivering and a lower occurrence of postoperative pain.