What are technical considerations for the performance of cardiopulmonary stress testing?

Updated: May 14, 2020
  • Author: Kevin McCarthy, RPFT; Chief Editor: Nader Kamangar, MD, FACP, FCCP, FCCM  more...
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Answer

Answer

Because motion artifact typically causes an estimation of SpO2 of 85%, care should be taken to differentiate oxygen desaturation from motion artifact, particularly if circulation to the oximeter probe site is compromised by pressure on a treadmill handrail or ergometer handgrip. If arterial blood is sampled at peak exercise, it should be obtained while exercising because PaO2 values can recover in as little as 15-30 seconds after cessation of exercise.


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