Page 32 - JSOM Winter 2025
P. 32
SUPPLEMENTARY MATERIAL
FIGURE S1 Study sample flowchart.
Alberta Trauma Registry identified
patients with blunt/penetrating
trauma from Jan 2015 to Aug 2019
n=4,565
Removed data
(missing data or did not meet criteria)
n=4,500
• Not transported by helicopter EMS
• No prehospital patient care report
available
• No in-hospital ED patient chart
available
• No pRBCs given by helicopter EMS
• No fibrinogen level measured in the ED
• Missing INR, MHP, disposition,
outcome, discharge status
Charts analyzed
n=65
SBP <90 post pRBC SBP >90 post pRBC
n=34 n=31
Fibrinogen Fibrinogen Fibrinogen Fibrinogen
<1.6g/L >1.6g/L <1.6g/L >1.6g/L
n=21 (62%) n=13 (38%) n=6 (19%) n=25 (81%)
INR = international normalized ratio; MHP = massive hemorrhage protocol; SBP = systolic blood pressure; pRBC = packed red blood cells.
30 | JSOM Volume 25, Edition 4 / Winter 2025
