[Diagnostic blood losses in severe trauma patients].
OBJECTIVE
To analyze diagnostic (blood drawings) and iatrogenic (Continuous Renal Replacement Therapy, CRRT) blood losses (BL) in severe trauma patients.


METHODS
A one-year descriptive, prospective and observational study. We included patients over 15 years of age, admitted with severe trauma and who had a score of > or =16 on the Injury Severity Index (ISS). Those patients in whom limitation of therapeutic effort had been indicated were excluded. A total of 225 patients with 1619 days of evolution were analyzed for volume of BL/day/patient, type of diagnostic test, clinical outcome and utilization of CRRT. The variables were described as mean +/- standard deviation with the Student's T test.


RESULTS
Average blood loss of patient per day was 55.5+/-32.2 cc. Statistically significant differences were found between the blood volume drawn when the first day was compared to the second day, 73.5+/-32.2 vs. 56.3+/-21.9 (p<0.001); clinical outcome (alive vs death) 54.8+/-33 vs. 60.7+/-24.9 (p<0.05); severity (ISS<31 or > or =31) 54.65+/-20 vs. 61.5+/-28.5 (p<0.001), No RRT vs RRT: 50.9+/-18.9 vs. 97.2+/-72.6 (p<0.001).


CONCLUSIONS
The greatest diagnostic BL occurs during the resuscitation phase, in the patients who die, in those with greater severity and those undergoing CRRT.
Vinagre Gaspar
R
R
UCI de Trauma y Emergencias, Hospital Universitario 12 de Octubre, Madrid, España. raquelvinagregaspar@gmail.com
Cornejo Bauer
C
C
Murillo Pérez
A
A
Molano Alvarez
E
E
Muñoz López
O
O
Morales Sánchez
C
C
López López
C
C
Cabrero Cabrero
A I
AI
Cuenca Solanas
M
M
García Fuentes
C
C
Chico Fernández
M
M
Alted López
E
E
D000328:Adult; D000740:Anemia / Q000209:etiology*; D005260:Female; D006403:Hematologic Tests / Q000009:adverse effects*; D006801:Humans; D015601:Injury Severity Score; D008297:Male; D011446:Prospective Studies; D014947:Wounds and Injuries / Q000097:blood*