Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/60504
Title: Exercise-induced desaturation and electrocardiogram changes in people with severe lung disease : an exploratory investigation of 25 serial cases
Authors: Jones, AYM
Yu, WC
Mok, WS
Yeung, OYY
Cheng, HCW
Dean, E
Issue Date: 2006
Publisher: Mosby
Source: Heart and lung : journal of acute and critical care, 2006, v. 35, no. 6, p. 397-404 How to cite?
Journal: Heart and lung : journal of acute and critical care 
Abstract: Background
Arterial desaturation is a commonly accepted clinical basis for discontinuing physical activity in people with chronic obstructive pulmonary disease.
Objective
The purpose of this exploratory study was to examine the electrocardiograms of people with severe chronic obstructive pulmonary disease recovering from exercise-induced arterial desaturation.
Subjects
Subjects (n = 25) walked for 6 minutes while oxygen saturation was monitored.
Methods
When the Spo2 decreased below 90%, subjects were asked to sit and rest while the electrocardiograms were recorded. For all patients, Spo2 decreased 11.6% on average below baseline during walking. Four patients developed dysrhythmias during desaturation, with a mean lowest Spo2 of 85%. The Spo2 in six other patients continued to decrease below 80% despite rest, yet these patients did not develop new dysrhythmias.
Conclusions
Our findings suggest that a decrease in Spo2 during exercise does not necessarily correlate with cardiac rhythm.
URI: http://hdl.handle.net/10397/60504
ISSN: 0147-9563
DOI: 10.1016/j.hrtlng.2006.05.001
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