Articles: general-anesthesia.
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Acta Anaesthesiol Scand · Apr 1990
Randomized Controlled Trial Clinical Trial Controlled Clinical TrialThe experience of the person ventilating the lungs does influence postoperative nausea and vomiting.
One hundred and ninety-eight patients undergoing elective abdominal hysterectomy were anaesthetized with isoflurane in nitrous oxide and oxygen. Ventilation before endotracheal intubation was carried out either by an experienced senior or by an inexperienced junior member of the anaesthetic team. ⋯ Patients whose lungs had been ventilated by experienced members of staff had significantly less (P less than 0.05 to 0.01) postoperative emesis in the recovery room (incidence of emesis 35%) and 2-6 h after operation (incidence 27%) when compared to patients whose lungs had been ventilated by inexperienced members of staff (incidence of emesis 54% and 40% in the recovery room and after 2 to 6 h, respectively). The results suggest that the experience of the person ventilating the lungs is associated with postoperative nausea and vomiting.
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Narcotic analgesics, although frequently used in adult patients, are at present relatively minor drugs in pediatric anesthesia. This review discusses indications, clinical applications, and side effects of opiates for pre-medication, induction and maintenance of anesthesia, and postoperative pain therapy in infants and children. Opiates do not represent the agents at first choice for preoperative anxiolysis or amnesia. ⋯ It has been shown, however, that opiate-supplemented general anesthesia can be used for pediatric surgery in an equally effective and safe manner. Finally, there is an essential need for more narcotic analgesics in the treatment of early postoperative pain, when antipyretic-antiphlogistic analgesics alone prove ineffective. It thus seems that in pediatric anesthesia today opiates are prescribed at the wrong time and withheld when they are most urgently needed.
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A computer-based system was developed for monitoring cardiac output using the Fick principle during general anesthesia. The variables of the oxygen-consumption Fick equation were measured using the following system: oxygen uptake by an originally developed respiratory gas monitoring system, arteriovenous oxygen saturation difference by pulse and fiberoptic oximetry, and hemoglobin concentration by an in vitro oximeter. Fick cardiac output and systemic vascular resistance were calculated every 30 seconds. ⋯ The Fick cardiac output was significantly lower than the thermodilution cardiac output, especially in the low flow range. We demonstrated that this new monitoring system was clinically feasible and sufficiently accurate, under the limited circumstances of our study. The integration of routinely used equipment has made possible a frequently repeatable method for estimating cardiac output in patients.
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The use of the laryngeal mask airway, a new form of airway, is described in infants and young children receiving radiotherapy under general anesthesia. The laryngeal mask airway consists of a tube, at the distal end of which is attached an elliptically shaped cuff resembling a miniature face mask. ⋯ No complications occurred during use of the laryngeal mask in 25 children who received 312 anesthetics. This experience suggests that the laryngeal mask airway has a valuable role in this situation and may contribute to the safety of anesthesia.
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Rev Esp Anestesiol Reanim · Mar 1990
[Usefulness of isoflurane in anesthesia in elective cesarean section].
A series of 25 patients undergoing iterative cesarean section under general anesthesia received isoflurane at 0.75% together with a mixture of O2 and N2O at 50% for anesthetic maintenance. The inhalant agent was withdrawn when closing fascia. ⋯ Mean hematocrit value was 31.43 (SD 1.27) at 6 hours of operation. Fetal arterial gasometric values and Apgar score at 5 and 10 minutes fell within acceptable limits.