Abstract
Respiratory volumes are measured non-invasively by recording rib cage and abdominal motions using respiratory inductive plethysmography (RIP). Qualitative diagnostic calibration (QDC) of RIP is based on the natural variability in the relative rib-cage-to-abdomen contribution during tidal breathing. QDC does not require subject cooperation but it has previously been shown that accuracy may deteriorate when breathing pattern changes. The aim of this study was to investigate the causes and situations where QDC accuracy deteriorates. The QDC method was compared to PRA (calibration during voluntarily preferential rib cage or abdomen breathing) in ten adults. A reference RIP calibration was obtained from all validation data (REF). The PRA method had better accuracy than the QDC method (p<0.01). The volumetric error ranged between 10% and 136% with QDC and between 5% and 33% with PRA. The PRA calibration factors were within 6% of those from REF, while the QDC rib-cage factor was underestimated by 15% and the abdominal factor was overestimated by 38%. Small natural variability in the relative rib-cage-to-abdomen contribution was related to poor accuracy. Each compartment's variability depended on its magnitude, which is a violation of the QDC assumptions.
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References
Chadha, T. S., Watson, H., Birch, S., Jenouri, G. A., Schneider, A. W., Cohn, M. A., andSackner, M. A. (1982): ‘Validation of respiratory inductive plethysmography using different calibration procedures’,Am. Rev. Respir. Dis.,125, pp. 644–649
Cohn, M. A., Rao, A. S. V., Broudy, M., Birch, S., Watson, H., Atkins, N., Davis, B., Stott, F. D., andSackner, M. A. (1982): ‘The respiratory inductive plethysmograph: a new non-invasive monitor of respiration’,Bull. Eur. Pathophysiol. Respir.,18, pp. 643–658
Gonzalez, H. B., Haller, H. L., Watson, H. L., andSackner, M. A. (1984): ‘Accuracy of respiratory inductive plethysmograph over wide range of rib cage and abdominal compartmental contributions to tidal volume in normal subjects and in patients with chronic obstructive pulmonary disease’,Am. Rev. Respir. Dis.,130, pp. 171–174
Konno, K., andMead, J. (1967): ‘Measurement of the separate volume changes of rib cage and abdomen during breathing’,J. Appl. Physiol.,22, pp. 407–422
Loveridge, B., West, P., Anthonisen, N. R., andKryger, M. H. (1983): ‘Single-position calibration of the respiratory inductance plethysmograph’,J. Appl. Physiol.,55, pp. 1031–1034
Prisk, G. K., Elliott, A. R., Guy, H. J. B., Verbanck, S., Paiva, M., andWest, J. B. (1998): ‘Multiple-breath washin of helium and sulfur hexafluoride in sustained microgravity’,J. Appl. Physiol.,84, pp. 244–252
Prisk, G. K., Guy, H. J. B., Elliott, A. R., Paiva, M., andWest, J. B. (1995): ‘Ventilatory inhomogeneity determined from multiplebreath washouts during sustained microgravity on Spacelab SLS-1’,J. Appl. Physiol.,78, pp. 597–607
Sackner, M. A., Watson, H., Belsito, A. S., Feinerman, D., Suarez, M., Gonzalez, G., Bizousky, F., andKrieger, B. (1989): ‘Calibration of respiratory inductive plethysmography during natural breathing’,J. Appl. Physiol.,66, pp. 410–420
Sartene, R., Dartus, C., Bernard, J. L., Matieu, M., andGoldman, M. D. (1993): ‘Comparison of thoracoabdominal calibration methods in normal subjects’,J. Appl. Physiol.,75, pp. 2142–2150
Stradling, J. R., Chadwick, G. A., Quirk, C., andPhillips, T. (1985): ‘Respiratory inductance plethysmography: calibration techniques, their validation and the effects of posture’,Bull. Eur. Pathophysiol. Respir.,21, pp. 317–324
Strömberg, N., andGrönkvist, M., (1999): ‘Improved accuracy and extended flow range for a Fleisch pneumotachograph’,Med. Biol. Eng. Comput.,37, pp. 456–460
Strömberg, N. O. T., Dahlbäck, G. O., andGustafsson, P. M. (1993): ‘Evaluation of various models for respiratory inductive plethysmography calibration’,J. Appl. Physiol.,74, pp. 1206–1211
Watson, H. (1979): ‘The technology of respiratory inductive plethysmography’ inStott, F. D. (Ed.), International Symposium of Ambulatory Monitoring (Academic Press, London), pp. 537–558
Yeh, M. P., Gardner, R. M., Adams, T. D., andYanowitz, F. G. (1982): ‘Computerized determination of pneumotachometer characteristics using a calibrated syringe’,J. Appl. Physiol.,53, pp. 280–285
Zimmerman, P. V., Conellan, S. J., Middleton, H. C., Tabona, M. V., Goldman, M. D., andPride, N. (1983): ‘Postural changes in rib cage and abdominal volume-motion coefficients and their effect on the calibration of a respiratory inductive plethysmograph’,Am. Rev. Respir. Dis.,127, pp. 209–214
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Strömberg, N.O.T. Error analysis of a natural breathing calibration method for respiratory inductive plethysmography. Med. Biol. Eng. Comput. 39, 310–314 (2001). https://doi.org/10.1007/BF02345285
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DOI: https://doi.org/10.1007/BF02345285