Influence of upper airway size on volume exhaled under negative pressure during evaluation of upper airway collapsibility |
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| Authors: | Luigi Taranto Montemurro Michela Bettinzoli Luciano Corda Stefania Redolfi Mauro Novali Alessia Braghini Claudio Tantucci |
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| Affiliation: | 1. Cattedra di Malattie dell??Apparato Respiratorio, Universit?? degli Studi di Brescia, Brescia, Italy
2. Prima Divisione di Medicina Interna, Spedali Civili, P.le Spedali Civili no 1, 25123, Brescia, Italy
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| Abstract: | Study objectives It has been shown that volume exhaled in the first 0.5 s after application at the mouth of 5 cmH2O negative pressure (V,NEP0.5) during wakefulness strongly reflects critical pressure (Pcrit) during sleep but only in males with neck circumference (NC) >37 cm. The aim of this study was to establish the relationship between upper airway (UA) size and V,NEP0.5, to obtain V,NEP0.5 values as percent predicted and then correlate them with Pcrit obtained in the same subjects. |
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