Risk Factors of Hassan for Blood Transfusion in a Pediatric Patient Undergoing Surgery to Correct Spinal Deformity

 

Patient selection: pediatric patient undergoing spinal deformity surgery

 

Risk factors for blood transfusion:

(1) more extensive surgery (presumably requiring a longer operation)

(2) blood loss during and after surgery in mL per kilogram body weight

(3) von Willebrand's disease (with a low levels of von Willebrand Factor) or history of significant bleeding

 

where:

• The mean blood loss as a percent of total blood volume in the nontransfused group was 30% vs 100% in the transfused group.

 

Factors associated with more extensive surgery:

(1) greater number of segments operated upon

(2) neuromuscular scoliosis (vs idiopathic)

(3) increased Cobb angle (greater than 80°)

Blood Loss in mL per kg	Percent Transfused
< 25	1%
25 to 50	15%
51 to 75	44%
> 75	100%