Dyspnea on Exertion in Rheumatoid Arthritis Patients
Primary Pulmonary Causes
- Pulmonary arterial hypertension can occur in association with rheumatoid arthritis, presenting with exertional dyspnea, which is the most frequent presenting symptom 1
- Pulmonary hypertension can masquerade as asthma, presenting with wheezing, chronic cough, and dyspnea 2
Cardiac Causes
- Patients with rheumatoid arthritis have an increased risk of cardiovascular disease 3
- Orthopnea and paroxysmal nocturnal dyspnea suggest elevated pulmonary venous pressure due to left-sided cardiac disease 1
Other Causes
- Physical deconditioning is common in RA patients due to decreased physical activity from joint pain and limitations, and can cause dyspnea on exertion 4
- Decreased oxygen carrying capacity due to anemia can cause dyspnea on exertion 4
- Dyspnea on exertion is present in obese patients, and has been strongly associated with an increased oxygen cost of breathing without bronchoconstriction 5
- Exercise can trigger bronchoconstriction in susceptible individuals, and chest tightness may be relatively specific for dyspnea due to bronchoconstriction 5
- The words patients use to describe their breathing discomfort may provide insight into the underlying pathophysiological mechanisms 4
- Consider referral to appropriate specialists (pulmonologist, cardiologist) for comprehensive evaluation of persistent dyspnea 2