Articles: intubation.
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Randomized Controlled Trial Clinical Trial
The oesophageal detector device. An assessment with uncuffed tubes in children.
In 100 children between the ages of 1-10 years, observers of differing experience reliably and rapidly detected 50 oesophageal and 50 tracheal intubations in a randomised single-blind trial using the original oesophageal detector device. However, only two children under the age of 2 years were tested and no conclusions can be drawn for this age group from this study.
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Randomized Controlled Trial Comparative Study Clinical Trial
Comparison of high and low doses of suxamethonium.
In a double-blind study, 67 young adult patients undergoing anaesthesia for dental extractions were allocated at random to receive either 0.5 mg/kg or 1.5 mg/kg suxamethonium. A greater increase in arterial pressure was seen following induction in the 1.5 mg/kg group, although overall intubating conditions were similar in the two groups. Suxamethonium-associated muscle pains were significantly more common in the group which received the larger dose (p less than 0.05).
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Comparative Study
Effectiveness of preoxygenation in morbidly obese patients.
The time taken for the oxygen saturation (SpO2) to decrease to 90% after preoxygenation was studied in six morbidly obese patients and six matched controls of normal weight. During apnoea the obese patients maintained Spo2 greater than 90% for 196 (SD 80) s (range 55-208 s), compared with 595 (SD 142) s (range 430-825 s) in the control group (P less than 0.001). One patient in the obese group had desaturation before the onset of complete relaxation and tracheal intubation, without complications. Bedside lung function tests were not significantly different between groups and cannot be used as a predictor of the effectiveness of preoxygenation.