NPPB and pulmonary arterial hypertension: PH, pulmonary hypertension; PAH, pulmonary arterial hypertension; CTPEH, chronic thromboembolic pulmonary hypertension; ERS risk assessment, European Society of Cardiology/European Respiratory Society pulmonary hypertension risk assessment; BNP, brain natriuretic peptide in pg/mL; PAP, pulmonary artery pressure in mmHg; PVR, pulmonary vascular resistance in woods; PAWP, pulmonary artery wedge pressure in mmHg; RAP, right atrium pressure in mmHg; ICU, intensive care unit; SOFA, sequential organ failure assessment; IV, intravenous; RRT, renal replacement therapy