Article Figures & Data
Figures
- Figure 1
Pre-operative coronal (left) and sagittal (right) radiographs of a 17 year old male with adolescent idiopathic scoliosis. Main Thoracic curve= 71 degrees (bending= 54); TL/L= 91 degrees (bending= 73).
- Figure 2
Post-operative coronal (left) and sagittal (right) radiographs of a 17 year old male with adolescent idiopathic scoliosis who underwent posterior spinal fusion (T3-L3). Estimated blood loss was 4500cc and 3 units of allogenic packed red blood cells were transfused.
Tables
- Table 1
Demographic information. (PD = Pre-donate of autologous blood, Non-PD = No pre-donation of autologous blood).
Group N Mean Age BMI Gender (%female) PD 28 15.6 ± 2.2 23.1 ± 4.2 75 NON-PD 97 14.8 ± 2.2 21.7 ± 5.3 78 p - 0.081 0.219 - - Table 2
Hematocrit (Hct) measured at pre-incision, post-operative day (POD) 1, POD2, and change from pre-incision to POD2. (PD = Pre-donate of autologous blood, Non-PD = No pre-donation of autologous blood).
Group Pre-Incision Hct POD1
HctPOD2
HctChange in Hct (Incision to POD2) PD 32.8 ± 3.4 29.3 ± 4.7 28.2 ± 4.4 -3.6 ± 3.6 NON-PD 33.8 ± 3.1 28.5 ± 3.4 27.3 ± 3.6 -5.3 ± 5.9 p 0.167 0.333 0.309 0.154 - Table 3
Surgical Parameters. Bolded p-value denotes statistical significance. (PD = Pre-donate of autologous blood, Non-PD = No pre-donation of autologous blood, LOH = Length of hospitalization).
Group Transfusion Rate (%) Allogenic Blood Transfusion Rate (%) LOH (days) PD 32.1 ± 48.0 3.6 ± 18.9 5.2 ± 0.8 NON-PD 25.8 ± 44.0 25.8 ± 44.0 5.5 ± 1.1 p 0.509 0.011 0.225 - Table 4
Estimated Blood Loss. Bolded p-value denotes statistical significance. (PD = Pre-donate of autologous blood, Non-PD = No pre-donation of autologous blood, EBL = Estimated Blood Loss, EBV = Estimated Blood Volume).
Group EBL (mL) EBV (mL) EBL/Levels fused EBL/EBV PD 734 ± 734 4444 ± 1142 77.8 ± 62.1 0.17 ± 0.13 Non-PD 938 ± 742 3881 ± 1060 102.5 ± 65.7 0.25 ± 0.19 p 0.180 0.017 0.079 0.012
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