( American College of Surgeons, Chicago, 1997 )

 
Class I
Class II
Class III
Class IV
Blood Loss ( mL)
Up to 750
750 - 1500
1500 - 2000
> 2000
Blood Loss ( %BV )
Up to 15%
15 - 30%
30 - 40%
> 40%
Pulse Rate
< 100
> 100
> 120
> 140
Blood Pressure
Normal
Normal
Decreased
Decreased
Pulse Pressure
 ( mmHg )
Normal or
Increased
Decreased
 
Decreased
 
Decreased
 
Respiratory Rate
14 - 20
20 - 30
30 - 40
> 35
Urine Output ( mL/hr )
> 30
20 - 30
5 - 15
Negligible
CNS/Mental status
 
Slightly
anxious
Mildly
anxious
Anxious &
confused
Confused &
lethargic
Fluid Replacement
 ( 3 : 1 Rule )
Crystalloid
& blood
Crystalloid
& blood
Crystalloid
 
Crystalloid
 

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