Classifies pulmonary arterial hypertension risk using WHO functional class, 6-minute walk distance and natriuretic peptide level.
Overview
Classifies pulmonary arterial hypertension risk using WHO functional class, 6-minute walk distance and natriuretic peptide level.
Clinical Significance
Rounded mean grades define low (1), intermediate-low (2), intermediate-high (3) or high (4) risk.
When to Use
- Use as structured clinical decision support when the required data are available and reliable.
How It Is Calculated
- The displayed variables are combined using the published equation, decision rule or weighted point system.
Interpretation
- Rounded mean grades define low (1), intermediate-low (2), intermediate-high (3) or high (4) risk.
Worked Example
Enter verified patient data in the displayed units; MedicalC applies the published model.
Limitations
- Risk and classification tools can be misapplied outside their validated population.
- Missing, estimated or non-contemporaneous data may materially change the result.
Clinical Pearls
- Document the input values, units, date and clinical setting with the result.
- Use serial scores only when the same instrument and measurement method are used consistently.
Common Mistakes
- Using the tool without confirming entry criteria.
- Using approximate or incorrectly converted laboratory values.
- Treating a prognostic score as a standalone treatment decision.
Frequently Asked Questions
What does this tool calculate?
Classifies pulmonary arterial hypertension risk using WHO functional class, 6-minute walk distance and natriuretic peptide level.
Can this result be used alone?
No. Interpret it with the full clinical assessment, applicable entry criteria and current guidance.
References
- Hoeper MM et al. Eur Respir J. 2022;60:2102311. — Primary or supporting reference for the implemented model.
Reviewed by: MedicalC Clinical Editorial Team
Last reviewed: July 2026