Author(s): Sinclair RC, Danjoux GR, Goodridge V, Batterham AM
Abstract Share this page
Abstract The variability between observers in the interpretation of cardiopulmonary exercise tests may impact upon clinical decision making and affect the risk stratification and peri-operative management of a patient. The purpose of this study was to quantify the inter-reader variability in the determination of the anaerobic threshold (V-slope method). A series of 21 cardiopulmonary exercise tests from patients attending a surgical pre-operative assessment clinic were read independently by nine experienced clinicians regularly involved in clinical decision making. The grand mean for the anaerobic threshold was 10.5 ml O(2).kg body mass(-1).min(-1). The technical error of measurement was 8.1\% (circa 0.9 ml.kg(-1).min(-1); 90\% confidence interval, 7.4-8.9\%). The mean absolute difference between readers was 4.5\% with a typical random error of 6.5\% (6.0-7.2\%). We conclude that the inter-observer variability for experienced clinicians determining the anaerobic threshold from cardiopulmonary exercise tests is acceptable.
This article was published in Anaesthesia
and referenced in Journal of Anesthesia & Clinical Research