• Lukas Ley, Friedrich Grimminger, Manuel Richter, Khodr Tello, Ardeschir Ghofrani, and Dirk Bandorski.
• Justus-Liebig-University Gießen, Campus Kerckhoff, Bad Nauheim; Medical Clinic IV, Gießen; Medical Clinic II, Gießen; Semmelweis University, Department of Medicine, 20099 Hamburg.
• Dtsch Arztebl Int. 2023 Dec 1; 120 (48): 823830823-830.

BackgroundUp to 1% of the world population and 10% of all persons over age 65 suffer from pulmonary hypertension (PH). The latency from the first symptom to the diagnosis is more than one year on average, and more than three years in 20% of patients. 40% seek help from more than four different physicians until their condition is finally diagnosed.MethodsThis review is based on publications retrieved by a selective literature search on pulmonary hypertension.ResultsThe most common causes of pulmonary hypertension are left heart diseases and lung diseases. Its cardinal symptom is exertional dyspnea that worsens as the disease progresses. Additional symptoms of right heart failure are seen in advanced stages. Pulmonary arterial hypertension (PAH) and chronic thromboembolic pulmonary hypertension (CTEPH) are rare, difficult to diagnose, and of particular clinical relevance because specific treatments are available. For this reason, strategies for the early detection of PAH and CTEPH have been developed. The clinical suspicion of PH arises in a patient who has nonspecific symptoms, electrocardiographic changes, and an abnormal (NT-pro-)BNP concentration. Once the suspicion of PH has been confirmed by echocardiography and, if necessary, differential-diagnostic evaluation with a cardiopulmonary stress test, and after the exclusion of a primary left heart disease or lung disease, the patient should be referred to a PH center for further diagnostic assessment, classification, and treatment.ConclusionIf both the (NT-pro-)BNP and the ECG are normal, PH is unlikely. Knowledge of the characteristic clinical manifestations and test results of PH is needed so that patients can be properly selected for referral to specialists and experts in PH.

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