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ABSTRACT Conventional methods of measuring ventilation in children involving mouthpiece and noseclip are inadequate because both the amount and pattern of breathing are altered by this
methodology. In order to obtain the true physiological pattern and magnitude of ventilation, a non-invasive technique such as the RIP (RespitraceR) is required. The RIP consists of 2 wire
coils (transducers) placed over the ribcage and abdomen. Volume changes within the coils cause proportional changes in their inductances and voltage output. The sum of the voltage signals
are calibrated against a known volume so as to represent tidal volume. To evaluate the accuracy of the RIP, the tidal volumes of 20 healthy children (8-16 yrs) were measured in 5 different
body positions, and compared with tidal volumes measured simultaneously with a pneumotachograph. Comparison of these two techniques showed mean correlation coefficients of greater than 0.96,
mean slopes between 0.95 and 1.10, and mean % SEE of less than 8% in all 5 body positions over a range of tidal volumes, thus demonstrating that the RIP can be accurately calibrated and
that calibration is maintained regardless of body position. The addition of mouthpiece and noseclip altered ventilation significantly. The breathing pattern became much more regular, while
mean tidal volume increased by 35% (p <.01). We conclude that the RIP provides an accurate means of measuring ventilation noninvasively in children and that it avoids the artifacts caused
by breathing through a mouthpiece. ARTICLE PDF AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Dept. of Resp. Physiology, The Hosp. for Sick Children, Toronto E Tabachnik, N Muller, B Toye
& H Levison Authors * E Tabachnik View author publications You can also search for this author inPubMed Google Scholar * N Muller View author publications You can also search for this
author inPubMed Google Scholar * B Toye View author publications You can also search for this author inPubMed Google Scholar * H Levison View author publications You can also search for this
author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Tabachnik, E., Muller, N., Toye, B. _et al._ 1729 NON-INVASIVE
MEASUREMENT OF VENTILATION IN CHILDREN USING THE RESPIRATORY INDUCTIVE PLETHYSMOGRAPH (RIP). _Pediatr Res_ 15 (Suppl 4), 731 (1981). https://doi.org/10.1203/00006450-198104001-01748 Download
citation * Issue Date: 01 April 1981 * DOI: https://doi.org/10.1203/00006450-198104001-01748 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content:
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