. 2013 Aug;144(2):638–650. doi: 10.1378/chest.12-2114

Table 2.

—Clinical Features and Risk Factors Distinguishing PAH From PH Due to HFpEF

PAH⁶	PH Due to HFpEF
Family history	Older age^38,65
Use of anorexigens, amphetamines	Systemic hypertension^45,65
Connective tissue disease; systemic sclerosis, SLE, MCTD	Diabetes^45,65
HIV	Coronary artery disease^45,65
Liver disease, portal hypertension	Atrial fibrillation³⁸
Congenital heart disease	Obesity^38,45,65
Schistosomiasis	Hyperlipidemia⁴⁵
	Orthopnea, PND
	Exaggerated increase in BP with exercise⁶⁶
ECG: right axis, RAE, RVH^67,68	ECG: left axis, LAE, LVH⁶⁹

LAE = left atrial enlargement; LVH = left ventricular hypertrophy; MCTD = mixed connective tissue disease; PND = paroxysmal nocturnal dyspnea; RAE = right atrial enlargement; RVH = right ventricular hypertrophy; SLE = systemic lupus erythematosus.