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MATERIALS METHODS DENIS R., ALAINPETER M. . Noninvasive ventilator-y with s in supine subjects. J. Appl. Physiol.: Respirat. Environ. Exercise Physiol. 55(2): 598-605, 1983.-We compared simultaneous measurements ventilatory movementsobtained by a of (BP) a respiratory inductive plethysmograph (RIP) vs. integrated volume from a pneumotachographin seven healthy volunteers during different respiratory patterns. The purposeof this study wasto assess a computer-aidedcalibraif tion procedure could improve the accuracy of BP, a simple semiquantitative method for noninvasive ventilatory in supinesubjects.Both deviceswere repeatedly calibrated against a pneumotachographin the sameposture with a computer-aided least-squaresmethod. One calibration maneuver wassufficient to achievea minimal relative difference in volume measurements between the RIP as well as the BP the pneumotachograph lessthan 1.2 t 4.5 (SD) %. The accuracy of remainedin this range during the subsequent calibrations with time (1 h) after body movements.However, this difference increased significantly with both devices when the subjects were studied in the lateral decubitus position. The present study indicates that despitetheoretical advantagesof the RIP, the BP, when properly calibrated, has similar performancesin supinesubjectsfor ventilation; it is simpler less expensive than the RIP is devoid of electrical drift artifacts. respiratory pattern; chestwall mechanics;respiratory inductive plethysmograph INTEREST IN BREATHING PATTERN under experimental or clinical conditions
Journal of Applied Physiology – The American Physiological Society
Published: Aug 1, 1983
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