What are some relative contraindications for cardiopulmonary exercise testing?
I.severe pulmonary hypertension or cor pulmonale
II.known electrolyte disturbances (e.g., hypokalemia) III.SaO₂ or SpO₂ less than 85% breathing room air
IV.untreated or unstable asthma

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I, II, III, and IV are all considered relative contraindications for cardiopulmonary exercise testing. Severe pulmonary hypertension or cor pulmonale, known electrolyte disturbances, very low oxygen saturation, and untreated or unstable asthma can all increase the risk of adverse events during the test.

What Are Some Relative Contraindications for Cardiopulmonary Exercise Testing