Chromogenic peptide substrate assays in patients with multiple trauma

Area of Science:

• Biochemistry
• Critical Care Medicine
• Hematology

Background:

• Plasma proteolytic enzyme systems, including coagulation, fibrinolysis, and kallikrein-kinin pathways, are crucial in physiological and pathological processes.
• Multitrauma patients exhibit complex dysregulation of these systems, impacting patient outcomes.
• Early identification of prognostic markers is vital for effective critical care management.

Purpose of the Study:

• To investigate the differences in plasma proteolytic enzyme system components between survivors and non-survivors in multitrauma patients.
• To evaluate the utility of chromogenic substrate assays for monitoring these enzyme systems in critically ill patients.

Main Methods:

• Daily monitoring of plasma samples from multitrauma patients (N=9 survivors, N=6 fatal cases) during the first week post-admission.
• Utilized chromogenic substrate assays to measure levels of Prekallikrein, Hageman Factor, Antithrombin-III, and Prothrombin.
• Compared enzyme levels between survivor and fatal groups.

Main Results:

• Significant differences were observed in the levels of Prekallikrein, Hageman Factor, Antithrombin-III, and Prothrombin between survivors and fatal cases within the first week.
• These specific enzyme levels may serve as potential biomarkers for prognosis in multitrauma patients.

Conclusions:

• Daily monitoring of plasma proteolytic enzyme systems using chromogenic substrate assays can reveal significant prognostic indicators in multitrauma patients.
• The simplicity, cost-effectiveness, and automation potential of these assays make them valuable for close monitoring in critical care settings.