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TEMPERATURE, HUMIDITY AND MUCUS FLOW IN THE INTUBATED TRACHEA

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Mucus flow rates were measured in the intact trachea of anaesthetized dogs, using a radioactive tracer technique. Measurements were made before intubation, and after intubation at inspired air temperatures of 32, 37 and 42°C, with a constant inspired water vapour content of 33 mg/l.; and again at each temperature with a relative humidity of 75%. No significant difference in mucus flow rate was found under any of these conditions.

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