Medicine
Last updated on: January 18th, 2023
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Pulmonary Vascular Disorders 1
A 50-year-old woman with no known medical conditions comes to the clinic because of a 6-month history of worsening exertional dyspnea. She smoked one pack of cigarettes per day for 25 years but stopped 5 years ago. Physical examination is unremarkable. Laboratory results show N-terminal-prohormone BNP (NT-proBNP) 140 pg/mL (normal: < 125). Echocardiography shows normal heart chambers and valves, normal biventricular systolic function, pulmonary artery systolic pressure (PASP) 42 mmHg (< 20), and tricuspid regurgitant velocity 3.0 m/s (< 2.8). Which of the following is the most appropriate next step?
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