Heart Failure Forrester Classification

Classification	Cardiac Index (L/min/m²)	Pulmonary Capillary Wedge Pressure (mmHg)	Predicted In-Hospital Mortality Rate (%)
Class I	≥2.2	<18	2
Class II	≥2.2	≥18	10
Class III	<2.2	<18	12
Class IV	<2.2	≥18	54

Class I: No pulmonary congestion and poor peripheral perfusion;

Class II: Presence of pulmonary congestion;

Class III: Poor perfusion of peripheral tissues;

Class IV: Presence of pulmonary congestion and poor peripheral perfusion.

Mainly used for patients with acute myocardial infarction, can also be used for the evaluation of acute heart failure due to other causes.