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- W2116335989 abstract "Diaphragmatic activity is the standard assessment of respiratory neural output but is difficult to measure and cannot be used for long‐term clinical monitoring. The tidal breathing minute ventilation ( image ) and mean inspiratory flow ( V T / t I ) reflect respiratory drive and can be monitored non‐invasively using respiratory inductive plethysmography (RIP). Recent findings indicate that peak inspiratory acceleration (PIA) correlates to diaphragmatic activity during CO 2 rebreathing in piglets. The aim of the present study was to assess whether tidal breathing peak inspiratory acceleration reflects respiratory drive during carbachol challenge. Aerosolized carbachol was administered to 15 allergic sheep until pulmonary resistance increased by at least 400%. After threshold dose, slight increases in image and V T / t I were seen (8 and 5%, respectively; P =NS), while PIA increased by 30% ( P <0·05). The change in PIA was closely correlated to changes in image and V T / t I ( r =0·73, P <0·01 and r =0·88, P <0·001, respectively). In conclusion, peak inspiratory acceleration reflected respiratory drive during bronchoprovocation. Further, this new measure of drive has the potential to accurately estimate drive in chronic obstructive lung disease where intrinsic positive end expiratory pressure prevents accurate selection of beginning inspiration necessary for computation of, e.g. V T / t I ." @default.
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- W2116335989 date "2001-01-01" @default.
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- W2116335989 title "Respiratory drive during carbachol challenge in allergic sheep" @default.
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- W2116335989 doi "https://doi.org/10.1046/j.1365-2281.2001.00294.x" @default.
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