32. Parameter Class I Class II Class III Class IV blood loss in mL <= 750 mL 750 − 1,500 mL 1,500 − 2,000 mL >= 2,000 mL blood loss as % TBV <= 15% 15 − 30% 30 − 40% >= 40% pulse > 100 > 100 > 120 >= 140 blood pressure normal normal decreased decreased capillary refill normal delayed delayed delayed respirations 14 − 20 20 − 30 30 − 40 > 35 urine output >= 30 mL/h 20 − 30 mL/h 5 − 10 mL/h minimal mental status slightly anxious mildly anxious anxious and confused confused and lethargic