Objective:

To identify the risk factors of deep vein thrombosis (DVT) of lower limb in patients undergoing lumbar fusion surgeries, to provide a better understanding of DVT and take prophylactic measures.

Methods:

This study was carried out in our hospital between January 2016 and February 2020, patients undergoing lumbar fusion surgeries were included and divided into DVT group and non-DVT group, and the medical data including basic demographics, clinical characteristics, operative data, and routine biochemical parameters were collected and analyzed.

Results:

In the current study, 390 cases were included, 48 cases were enrolled in DVT group and 342 in non-DVT group. The incidence of DVT was 12.3%. There were significant differences in age, hyperlipemia, hypertension, occupation type, D-dimer level, hospital stay, and postoperative exercises (p<0.05), but no significant differences in gender, smoking status, drinking status, coronary heart disease, diabetes mellitus, fused segments, and operation time (p>0.05) between the two groups. In multivariate analysis, age>50 years, hypertension, D-dimer>500ug/L were independent risk factors, while postoperative exercises were protective factor for DVT.

Conclusion:

Those patients undergoing lumbar fusion surgeries should take more prophylactic measures including postoperative exercises if they were elderly, or hypertensive, or have high D-dimer level, in order to decrease the incidence of DVT.