Original Research

Exercise testing of patients after a period of prolonged mechanical ventilation

R. Roos, H. van Aswegen, C. J. Eales, P. J. Becker
South African Journal of Physiotherapy | Vol 60, No 2 | a187 | DOI: https://doi.org/10.4102/sajp.v60i2.187 | © 2004 R. Roos, H. van Aswegen, C. J. Eales, P. J. Becker | This work is licensed under CC Attribution 4.0
Submitted: 12 January 2004 | Published: 12 January 2004

About the author(s)

R. Roos, Stellenbosch University, South Africa
H. van Aswegen, University of the Witwatersrand, South Africa
C. J. Eales, University of the Witwatersrand, South Africa
P. J. Becker, Biostatistics unit at the MRC, South Africa

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Abstract

In this study, physical recovery of patients who received prolonged mechanical ventilation (PMV) was assessed with a six-phase functional exercise test after the period of ventilation. A prospective correlation study using a consecutive sampling method was carried out over a six-month period. Thirty-one patients were tested but five were lost to follow-up Statistical tests included the Pearson’s correlation coefficient, student’s paired t-test and Kaplan-Meier survival estimate. Subjective perceived effort changed significantly from phase to phase in the exercise test and over time (p < 0.00) Heart rate and respiratory rate responses indicated increased cardio-respiratory effort during the test. No correlation existed between subjective perceived

Keywords

prolonged mechanical ventilation; exercise testing

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