Venous thromboembolism in complicated cervical spine injury

Objective. To determine incidence rate and risk factors for the development of venous thromboembolism in complicated cervical spine injury.
Material and Methods. The study included 34 patients with acute complicated cervical spine injury. Inclusion criteria were newly diagnosed venous thromboembolic complications, and application of low-frequency piezothromboelastography to study the hemostasis system. All patients received standard drug thromboprophylaxis. Patients were divided into two study groups: Group I included 21 patients
with venous thromboembolic complications, and Group II – 13 patients without thromboembolic complications.
Results. The incidence of venous thromboembolism in the total sample was 61.8 %. Pulmonary artery embolism developed in 4.7 % of cases. In 91,0 % of cases, thrombosis was asymptomatic. The state of the hemostatic system in Group I before the start of thromboprophylaxis was characterized by chronometric hypocoagulation, and structural hypercoagulation with a 2.6-fold increase in the intensity of clot retraction and lysis. In Group II, there was chronometric and structural hypercoagulation with a 14.4-fold increase in the intensity of clot retraction and lysis. The main significant predictors of the development of venous thromboembolism were identified as intestinal paresis (p = 0.004), absence of changes in neurological status (p = 0.012), length of stay in the ICU (p = 0.025), and length of hospital
stay (p = 0.039). The building of a multivariate logistic regression model revealed multiplicative significant predictors of the development of thromboembolism. It has been shown that the presence of intestinal paresis is associated with a 25.07-fold increase in the chances of developing DVT of lower extremities.

Conclusion. Considering the high incidence of venous thromboembolic complications in patients with complicated cervical spine injury, further research is required to study the effectiveness and safety of correction of drug thromboprophylaxis regimens in the form of increasing doses of anticoagulants or the frequency of their administration.

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