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2015 ; 44
(1
): 25-31
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Prehospital Resuscitation of Traumatic Hemorrhagic Shock with Hypertonic
Solutions Worsens Hypocoagulation and Hyperfibrinolysis
#MMPMID25784523
Delano MJ
; Rizoli SB
; Rhind SG
; Cuschieri J
; Junger W
; Baker AJ
; Dubick MA
; Hoyt DB
; Bulger EM
Shock
2015[Jul]; 44
(1
): 25-31
PMID25784523
show ga
Impaired hemostasis frequently occurs after traumatic shock and resuscitation.
The prehospital fluid administered can exacerbate subsequent bleeding and
coagulopathy. Hypertonic solutions are recommended as first-line treatment of
traumatic shock; however, their effects on coagulation are unclear. This study
explores the impact of resuscitation with various hypertonic solutions on early
coagulopathy after trauma. We conducted a prospective observational subgroup
analysis of large clinical trial on out-of-hospital single-bolus (250 mL)
hypertonic fluid resuscitation of hemorrhagic shock trauma patients (systolic
blood pressure, ?70 mmHg). Patients received 7.5% NaCl (HS), 7.5% NaCl/6% Dextran
70 (HSD), or 0.9% NaCl (normal saline [NS]) in the prehospital setting.
Thirty-four patients were included: 9 HS, 8 HSD, 17 NS. Treatment with HS/HSD led
to higher admission systolic blood pressure, sodium, chloride, and osmolarity,
whereas lactate, base deficit, fluid requirement, and hemoglobin levels were
similar in all groups. The HSD-resuscitated patients had higher admission
international normalized ratio values and more hypocoagulable patients, 62% (vs.
55% HS, 47% NS; P < 0.05). Prothrombotic tissue factor was elevated in shock
treated with NS but depressed in both HS and HSD groups. Fibrinolytic tissue
plasminogen activator and anti-fibrinolytic plasminogen activator inhibitor type
1 were increased by shock but not thrombin-activatable fibrinolysis inhibitor.
The HSD patients had the worst imbalance between procoagulation/anticoagulation
and profibrinolysis/antifibrinolysis, resulting in more hypocoagulability and
hyperfibrinolysis. We concluded that resuscitation with hypertonic solutions,
particularly HSD, worsens hypocoagulability and hyperfibrinolysis after
hemorrhagic shock in trauma through imbalances in both procoagulants and
anticoagulants and both profibrinolytic and antifibrinolytic activities.