| Class 1 | Class 2 | Class 3 | Class 4 |
---|---|---|---|---|
Blood loss | < 750 cc | 750-1,500 cc | 1,500-2,000 cc | > 2,000 cc |
Blood loss (% volume) | < 15% | 15-40% | 30-50% | > 40% |
Heart rate | < 100/min | > 100/min | > 130/min | > 140/min |
Blood pressure | Normal | Normal | Decreased | Decreased |
Pulse pressure | Normal | Decreased | Decreased | Decreased |
Respiratory rate | 14–20/min | 20–30/min | 30–40/min | > 35/min |
Urine output | > 30mL/hr | 20–30/mL/hr | 5–15/ml/hr | Negligible |
Mental status | Normal | Anxious | Confused | Lethargic |