The Reliability and Validity of Consistently Assess Signs and Symptoms of Heart Failure (CLASS-HF) Guide

Area of Science:

• Cardiology
• Clinical Assessment
• Medical Device Validation

Background:

• The New York Heart Association Functional Classification (NYHA-FC) is a standard clinical tool for evaluating patient functional capacity in heart failure.
• Accurate assessment of functional capacity is crucial for guiding heart failure management and treatment decisions.

Purpose of the Study:

• To evaluate the reliability and validity of the Consistently Assess Signs and Symptoms of Heart Failure (CLASS-HF) Guide.
• To determine if the CLASS-HF Guide can be used consistently by healthcare providers for NYHA-FC assignment.

Main Methods:

• Healthcare providers utilized the CLASS-HF Guide to assign NYHA-FC to heart failure patients.
• Patients underwent a 6-minute walk test to objectively measure functional capacity.

Main Results:

• Interrater reliability for NYHA-FC assignment using the CLASS-HF Guide showed moderate agreement (κ = 0.462).
• A significant inverse correlation was observed between assigned NYHA-FC and the distance walked in 6 minutes (rs = -0.469, P < .001).
• Significant differences in walking distance were found across NYHA-FC categories (ANOVA F(3,99) = 10.72, P < .001).

Conclusions:

• The CLASS-HF Guide demonstrates evidence of reliability and validity in assigning NYHA-FC.
• The CLASS-HF Guide is a potentially valuable tool for consistent functional capacity assessment in heart failure patients.