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EHMRG

EHMRG Score: Predicts 7-day mortality in patients presenting to the emergency department with acute heart failure.

Guidelines & Evidence

Verified

Last Review: 2026-07-17

When to Use

When to Use

Patients presenting to the Emergency Department (ED) with symptoms of acute decompensated heart failure (ADHF).
To guide disposition decisions: identifies patients at very low risk suitable for early discharge or observation, and those at very high risk requiring intensive care or urgent cardiology involvement.

How it Works

Variables and Weighting

The Emergency Heart Failure Mortality Risk Grade (EHMRG) uses 7 readily available clinical parameters. Unlike many other scores, it explicitly accounts for transportation by EMS, which is a strong marker of disease severity and patient acuity.

Key Predictors

01
Age: Mortality risk increases linearly.
02
EMS Transport: Strongly associated with higher mortality (+30 points).
03
Systolic BP: Lower SBP indicates reduced cardiac output and higher risk.
04
Heart Rate: Tachycardia reflects compensatory sympathetic activation.
05
Oxygen Saturation (SaO2): Reflects pulmonary congestion; <95% carries exponential risk.
06
Creatinine & Potassium: Indicators of renal perfusion and metabolic stability.
07
Troponin: Cardiac injury indicates severe hemodynamic stress or concomitant ACS.

Clinical Pearls

Short-Term Focus

Most HF scores (e.g., MAGGIC, Seattle) predict 1-year or 5-year mortality. EHMRG is unique because it focuses on the IMMEDIATE 7-day mortality, providing the most actionable data for the ED physician.

Implementation Impact

Using EHMRG can significantly reduce the "grey-zone" admissions of very low-risk patients while and ensuring that high-risk patients are not prematurely discharged.

The Evidence

Original Derivation

Identification of low-risk patients with acute heart failure: the Emergency Heart Failure Mortality Risk Grade (EHMRG).

Lee DS et al. • Circ Cardiovasc Qual Outcomes.. 2012;5(6):773-81. Derived from 12,591 patients in the Ontario-wide Heart Failure registry.

Last Comprehensive Review: 2026-07-17

In Recent Clinical News

Scanning Medical Journals

No new significant updates or guidelines matching this topic were found today. We will check again soon.