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Diagnostic algorithm to diagnose pulmonary hypertension in resource-constraint settings. PH, pulmonary hypertension; TB, tuberculosis; PCP, pneumocystis pneumonia; COPD, chronic obstructive pulmonary disease; LHD, left heart disease; ECHO, echocardiography; US, ultrasound; LFT, liver function tests; HRCT, high-resolution CT; CTEPH, chronic thromboembolic pulmonary hypertension; CTPA, CT pulmonary angiography; V/Q, ventilation/perfusion lung scan.
