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[Measurements of airway resistance in stenosis of the laryngo-tracheal region].

The airway resistance of 32 patients with tracheostomies due to tracheal or laryngeal stenoses was measured using the autoflow and the oscillation method. The resistance to flow between the mouth and tracheostomy was determined with the autoflow method. While measuring with the oscillation method the tracheostoma was blocked with stomahaesive . The comparison of both methods resulted in a good correlation (r2 = 0.83). Hence, the oscillation method can be used to determine airway resistance in patients with stenosis of the larynx or trachea, irrespective of whether or not they have a tracheostome .