Der Anaesthesist
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Randomized Controlled Trial Clinical Trial
[Continuous monitoring of spontaneous postoperative respiration. 3. The effect of amiphenazole on cutaneous oxygen and carbon dioxide partial pressure following gynecologic surgery under halothane anesthesia].
In an attempt to verify non-invasive respiratory monitoring for patients in the early postoperative period, cutaneous O2 and CO2 pressures were monitored in 30 female patients recovering from major gynaecologic surgery under halothane anaesthesia. In a double-blind and randomized fashion, in the recovery room the patients received a single intravenous bolus injection of placebo or 150 mg amiphenazole, a respiratory stimulant. The data were collected and stored in a personal computer, using the TCM3 system with a combination electrode for simultaneous measuring of cutaneous oxygen and carbon dioxide partial pressures (TINA, Radiometer) at 30-s intervals. The overall observation period was 240 min. Means and standard deviations were calculated for individual data and for data pooled at 15- or 60-min intervals. Groups were compared by means of the chi 2 test, Student's t-test, Wilcoxon rank sum test or analysis of variance (level of significance P < or = 0.05). ⋯ The present study confirmed that spontaneous respiration in the early postoperative period can be monitored non-invasively by measuring transcutaneous partial pressures of carbon dioxide and, less precisely due to large individual variations, oxygen. It showed that spontaneous respiration deteriorates after gynaecological surgery under halothane anaesthesia and recovers slowly during the next 4 h. The respiratory stimulant amiphenazole (150 mg i.v.) was of no significant value with respect to the improvement of ventilation.
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Randomized Controlled Trial Comparative Study Clinical Trial
[A comparison of different endotracheal tubes. Tracheal cuff seal, peak centering and the incidence of postoperative sore throat].
The study objective was to evaluate cuff seal, tube tip position and incidence of postoperative sore throat in three different endotracheal tubes: the reusable Rüsch "red rubber" tube (low-volume, high-pressure cuff) and the disposable Rüsch "Super Safety Clear" and Mallinckrodt "lo-pro" tubes (both high-volume, low-pressure cuffs). ⋯ Despite the economic (usable up to 100 times) and ecological (less PVC waste) advantages of the rubber tube, the disposable tubes with high-volume, low-pressure cuffs tended to be superior regarding cuff seal, tube tip position and incidence of postoperative throat complaints. Nevertheless, the continued use of "red rubber" type reusable tubes may be justified in cases where the tube has to stay in place for only a short time.