Davies, K R Expiratory flow rate curves for monitoring upper and lower airway obstruction during anesthesia. [electronic resource] - Journal of clinical monitoring Oct 1991 - 346-8 p. digital Publication Type: Letter ISSN: 0748-1977 Standard No.: 10.1007/BF01619356 doi Subjects--Topical Terms: Airway Obstruction--diagnosisAnalog-Digital ConversionAnesthesia, InhalationHumansMonitoring, Physiologic--instrumentationPeak Expiratory Flow Rate--physiologyPulmonary Ventilation--physiologyRheologyUltrasonography--instrumentation