Variable | N |
---|---|
Age, mean ± SD, yrs | 51.3 ± 13.5 |
Male | 5 |
Female | 14 |
BMI, mean ± SD, kg/m2 | 25.1 ± 3.6 |
Reasons for CPET/RHC referral (some subjects had > 1 reason for referral) | |
Dyspnea on exertion | 19 |
Exertional oxygen desaturation | 10 |
Abnormal P2 heart sound | 7 |
Abnormal echocardiography: estimated PASP ≥ 40mm Hg | 6 |
DLCO deemed out of proportion to ILD | 6 |
New York Heart Association class | |
II | 13 |
III | 6 |
Other medical history | |
Asthma | 4 |
Myositis | 3 |
Cardiomyopathy | 1 |
Coronary artery disease | 1 |
Chest radiograph | |
Normal | 14 |
Abnormal parenchyma | 3 |
Abnormal cardiac silhouette | 2 |
Computed tomography scan thorax | |
Normal | 1 |
Interstitial abnormalities | 15 |
Left ventricular ejection fraction | |
Normal (≥ 50%) | 16 |
Abnormal (< 50%) | 1 |
Echocardiogram estimated pulmonary artery systolic pressure | |
Normal (< 40 mm Hg) | 10 |
Abnormal (≥ 40 mm Hg) | 6 |
BMI: body mass index; CPET/RHC: cardiopulmonary exercise testing with right-heart catheterization; ILD: interstitial lung disease.