Killip Class for AMI Hemodynamic Severity

Classify hemodynamic status in acute MI using Killip classification. Class I: no signs of heart failure (in-hospital mortality approximately 6%). Class II: S3 gallop or basal crackles less than 50% of lung fields (approximately 17% mortality). Class III: acute pulmonary edema (approximately 38% mortality). Class IV: cardiogenic shock, SBP below 90 (approximately 81% mortality in original series).