PMID: 640927Apr 1, 1978Paper

Computer-aided measurement of breath volume and time components using magnetometers

Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology
D StaggJ N Davis

Abstract

A computer-assisted method is developed for analyzing volume and time components of individual breaths using a previously developed magnetometer method for recording anteroposterior (AP) diameters of rib cage and abdomen. Calibration constants for the magnetometer system are computed during simultaneous measurements of airflow at the mouth for several breaths during spontaneous breathing. Tidal volume and inspiratory and expiratory times can then be computed from the magnetometer signals alone, without imposing respiratory devices at the subject's airway. No respiratory isovolume maneuvers are necessary. Results from normal subjects and from one patient with bilateral diaphragmatic paralysis show that the magnetometer analysis is closely comparable to standard measurements made from airflow recordings. The magnetometer technique thus provides an accurate means of measuring volume and time components of breathing in man, avoiding the behavioral or reflex effects induced by mouthpiece, nose clip, or face mask. Because no special respiratory maneuvers are required for calibration, the technique will be well suited to the study of breathing in those who are ill.

Citations

Jul 1, 1989·Journal of Clinical Monitoring·K A EastB T Waterfall
Jan 1, 1995·European Journal of Applied Physiology and Occupational Physiology·C L Lafortuna, L Passerini
Sep 18, 2013·Medicine and Science in Sports and Exercise·Christian HeydeAlbert Gollhofer
Jul 23, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Victoria S McKenna, Jessica E Huber
Dec 1, 1979·British Journal of Clinical Pharmacology·G M Sterling
Sep 1, 1983·Journal of Medical Engineering & Technology·H R Gribbin
Jun 11, 1998·Journal of Applied Physiology·M WantierM Paiva
Dec 14, 2011·European Journal of Applied Physiology·Roy J Shephard, Yukitoshi Aoyagi
Apr 1, 1990·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·T AoeT Mizuguchi
Sep 15, 2001·Physiological Measurement·G B Drummond, N D Duffy
Jun 15, 2017·European Journal of Applied Physiology·Rémy DumondJacques Prioux
Jun 16, 2009·Archivos de bronconeumología·Joaquim GeaJuana Martínez-Llorens

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