[Current Aspects of Definition and Diagnosis of Pulmonary Hypertension]

Area of Science:

• Cardiology
• Pulmonology
• Medical Diagnostics

Background:

• The 6th World Symposium on Pulmonary Hypertension (WSPH) convened in 2018 to review advancements in PH over the preceding five years.
• Key findings were published, introducing significant revisions to the diagnostic criteria for PH.

Purpose of the Study:

• To discuss the rationale and implications of the revised PH definition proposed by the WSPH.
• To provide an updated overview of diagnostic and prognostic methods for PH.

Main Methods:

• Review of scientific progress presented at the 6th WSPH.
• Analysis of the proposed changes to the PH definition, including diagnostic thresholds and criteria.
• Overview of current non-invasive and invasive diagnostic techniques, including exercise testing.

Main Results:

• The WSPH recommended lowering the diagnostic threshold for PH from ≥25 mmHg to >20 mmHg mean pulmonary arterial pressure.
• Pulmonary vascular resistance was incorporated into the definition of PH, emphasizing cardiac output measurement.
• The article discusses the potential consequences of these definition changes.

Conclusions:

• The revised definition of PH signifies a major shift in diagnostic criteria.
• Understanding these changes is crucial for accurate diagnosis, differential diagnosis, and prognosis of PH.
• A comprehensive approach integrating updated definitions and diagnostic methods is essential for managing pulmonary hypertension.