Anaesthesia and intensive care
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Six disposable heat and moisture exchangers were tested on patients undergoing anaesthesia requiring mechanical ventilation. Inspiratory humidity and temperature were monitored to find the steady-state values reached with each device together with the times taken for these to be achieved. The exchangers were tested in a non-rebreathing T-piece circuit and in a conventional circle system with a fresh gas flow of 6 l/min: the Siemens 150 provided 28 and 32 mg of water/litre of inspired gas (at about 30 degrees C) in 10 and 5 min respectively, but is rather heavy and bulky. ⋯ The Pall is also a very effective bacterial filter and has been found to be satisfactory in the intensive care setting. The Terumo appeared to perform no better than a circle system with catheter mount (13 mg/l at 27 degrees C). It would seem that more complex humidification equipment is not necessary during anaesthesia if an efficient heat and moisture exchanger is used.
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Anaesth Intensive Care · May 1987
In-hospital cardiopulmonary resuscitation: prospective survey of management and outcome.
A sixteen-month prospective survey of in-hospital cardiac arrests indicated that of 168 patients who received cardiopulmonary resuscitation, 27 (16%) survived to leave hospital. Ninety-three per cent of these patients were ambulant and 81% were able to care for themselves. Poorest outcome was associated with initial rhythm of asystole, prolonged resuscitation and arrest in the Intensive Care Units. When compared with recent and past literature, these figures suggest that the incidence of successful outcome for cardiopulmonary resuscitation in hospitals has not changed significantly over the past twenty years.
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A prospective survey was conducted over a one-month period in all surgical patients admitted to the recovery room of a university-affiliated teaching hospital. Complications arising in the recovery room were documented by the nursing staff according to predefined criteria and were critically evaluated. A total of 443 patients were admitted to the recovery room and in 133 (30%) of these, some form of complication was noted. ⋯ The results are discussed, with emphasis on their relevance to current anaesthetic practice. It is concluded that many patients exhibit recovery room complications when they are specifically sought. The recovery period remains a time of great potential danger to patients.
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Anaesth Intensive Care · May 1987
Randomized Controlled Trial Clinical TrialThe effects of formulation and addition of adrenaline to cocaine for haemostasis in intranasal surgery.
Twenty patients presenting for submucous resection of the nasal septum under general anaesthesia were randomly allocated to four groups to receive either 1.0 ml 25% cocaine HCl in paraffin paste, 1.0 ml 25% cocaine HCl combined with 0.1% adrenaline in paraffin paste, 4.0 ml aqueous 4% cocaine HCl combined with 0.05% adrenaline or 4.0 ml aqueous 4% cocaine HCl on ribbon gauze applied to the nasal mucosa. Mean intraoperative blood loss was significantly decreased when the 25% cocaine 0.1% adrenaline combination in paraffin paste was used (11 (SD 8) ml, 60 (SD 30) ml, P less than 0.05, for adrenaline and plain paste respectively). ⋯ Heart rate and blood pressure changes were similar in all four groups and cardiovascular toxicity was not observed. One ml of topical intranasal 25% cocaine HCl with 0.1% adrenaline in paraffin paste provided the best haemostasis for nasal septal surgery.