Unified Heart Failure Calculator

All 14 guideline modules in a single page. Navigate by module to classify heart failure, optimize GDMT, evaluate device therapy, and manage comorbidities.

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Left Ventricular Ejection Fraction*

%

From most recent echocardiogram

Previous LVEF (if known)

%

For detecting HFimpEF

NYHA Functional Class

HF Classification by LVEF — 2022 AHA/ACC/HFSA Guideline, Table 1

Phenotype	LVEF	Description
HFrEF	≤40%	Reduced ejection fraction
HFmrEF	41-49%	Mildly reduced ejection fraction
HFpEF	≥50%	Preserved ejection fraction
HFimpEF	Previously ≤40%, now >40%	Improved ejection fraction

Source: Heidenreich PA, et al. 2022 AHA/ACC/HFSA Guideline for the Management of Heart Failure.

IMPORTANT: This software is clinical decision support (CDS) intended for use by licensed healthcare professionals under Section 520(o)(1)(E) of the Federal Food, Drug, and Cosmetic Act. It is not intended as a medical device. All recommendations are derived from the 2022 AHA/ACC/HFSA Guideline for the Management of Heart Failure and must be independently verified by the treating clinician before any clinical action. AI-generated content (including extracted data and clinical notes) is produced by large language models and may contain errors, omissions, or hallucinations — clinician review is mandatory. Patient data entered into the calculator is processed entirely in the browser; AI features process data server-side under a signed HIPAA Business Associate Agreement with no data retention. AI-HEART Lab, its affiliates, and contributors assume no liability for clinical decisions made using this tool. By using this tool, you acknowledge these limitations and accept full responsibility for clinical decisions.

Calculator computation is 100% client-side. No patient data is transmitted to any server.