Under which of the following conditions would you recommend ending a cardiopulmonary ex-ercise evaluation?
1. Electrocardiogram indicating sinus tachycardia
2. 10% fall from baseline oxyhemoglobin (HbO2) saturation
3. Fall in systolic blood pressure of more than 20 mm Hg
4. Request from the patient to terminate the test
a. 2, 3, and 4 only
b. 1, 2, and 3 only
c. 1, 2, 3, and 4
d. 1, 2, and 4 only
ANS: A
To guide practitioners in implementing exercise evaluation, the AARC has published Clinical Practice Guidelines: Exercise Testing for Evaluation of Hypoxemia and/or Desaturation and Pulmonary Rehabilitation.
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