Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 49: 1116-1121, 1980;
8750-7587/80 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Suratt, P. M.
Right arrow Articles by Hsiao, H. S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Suratt, P. M.
Right arrow Articles by Hsiao, H. S.

Journal of Applied Physiology, Vol 49, Issue 6 1116-1121, Copyright © 1980 by American Physiological Society

ARTICLES

A pulse method of measuring respiratory system compliance

P. M. Suratt, D. H. Owens, W. T. Kilgore, R. R. Harry and H. S. Hsiao

We describe a new method of measuring respiratory system compliance (Crs) that appears to detect whether respiratory muscles are relaxed. A pulse airflow, 0.3/s, is blown into the mouth through a pneumotachograph. Mouth pressure is recorded on the abscissa of an oscilloscope. Inflated volume, integrated from the flow signal, is recorded on the ordinate. After an initial step shift of pressure related to the flow resistance of the subject, pressure increases linearly at a rate inversely proportional to Crs. Crs is calculated from the slope of the volume-pressure line. With relaxed subjects, repeated pulses yield straight lines with similar slopes (mean coef of variation = 4.8%). When subjects are not relaxed, the pulse produces irregular lines. In 15 normal subjects who could relax. Crs averaged 0.86 +/- 0.016 (SD) 1/cmH2O. When normalized for body size by dividing by the vital capacity, the mean value was 0.021 +/- 0.0024 cmH2O-1, which agrees with published values. We conclude that the pulse method accurately measures Crs and has the advantage of detecting respiratory muscle relaxation.


This article has been cited by other articles:


Home page
 Am. J. Respir. Crit. Care Med.Home page
S. Grasso, T. Stripoli, M. De Michele, F. Bruno, M. Moschetta, G. Angelelli, I. Munno, V. Ruggiero, R. Anaclerio, A. Cafarelli, et al.
ARDSnet Ventilatory Protocol and Alveolar Hyperinflation: Role of Positive End-Expiratory Pressure
Am. J. Respir. Crit. Care Med., October 15, 2007; 176(8): 761 - 767.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
S. Parthasarathy, A. Jubran, F. Laghi, and M. J. Tobin
Sternomastoid, rib cage, and expiratory muscle activity during weaning failure
J Appl Physiol, July 1, 2007; 103(1): 140 - 147.
[Abstract] [Full Text] [PDF]

Home page
 Anesth. Analg.Home page
G. Perchiazzi, R. Giuliani, L. Ruggiero, T. Fiore, and G. Hedenstierna
Estimating Respiratory System Compliance During Mechanical Ventilation Using Artificial Neural Networks
Anesth. Analg., October 1, 2003; 97(4): 1143 - 1148.
[Abstract] [Full Text] [PDF]

Home page
 Eur Respir JHome page
J-J. Rouby, Q. Lu, and S. Vieira
Pressure/volume curves and lung computed tomography in acute respiratory distress syndrome
Eur. Respir. J., August 1, 2003; 22(42_suppl): 27s - 36s.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Respir. Crit. Care Med.Home page
V. NÈVE, E. D. de la ROQUE, F. LECLERC, S. LETEURTRE, A. DORKENOO, A. SADIK, R. CREMER, and R. LOGIER
Ventilator-induced Overdistension in Children . Dynamic versus Low-flow Inflation Volume-Pressure Curves
Am. J. Respir. Crit. Care Med., July 1, 2000; 162(1): 139 - 147.
[Abstract] [Full Text]

Home page
 Am. J. Respir. Crit. Care Med.Home page
Q. LU, S. R. R. VIEIRA, J. RICHECOEUR, L. PUYBASSET, P. KALFON, P. CORIAT, and J.-J. ROUBY
A Simple Automated Method for Measuring Pressure-Volume Curves during Mechanical Ventilation
Am. J. Respir. Crit. Care Med., January 1, 1999; 159(1): 275 - 282.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online