Early warning prevention and control strategies to reduce perioperative venous thromboembolism in patients with gastrointestinal cancer

Table 3 Comparison of coagulation indicators between two groups at different points in time

	Control (n = 128)	Early warning (n = 136)	P value
d-dimer (µg/mL), mean ± SD
Before	0.46 ± 0.20	0.44 ± 0.24	0.473
1 d	1.86 ± 0.96	2.04 ± 1.27	0.197
3 d	3.27 ± 1.85	2.68 ± 1.74	0.008
7 d	2.75 ± 1.82	1.52 ± 1.03	0.000
Prothrombin time (s), mean ± SD
Before	11.3 ± 1.4	11.1 ± 1.0	0.061
1 d	11.5 ± 1.1	11.3 ± 1.2	0.359
3 d	11.7 ± 1.0	11.5 ± 0.9	0.057
7 d	11.2 ± 1.2	11.3 ± 1.0	0.648
Fibrinogen degradation product, mean ± SD
Before	2.54 ± 1.52	2.67 ± 1.36	0.464
1 d	7.26 ± 3.21	6.82 ± 3.29	0.273
3 d	7.69 ± 2.27	5.62 ± 2.11	0.000
7 d	8.16 ± 4.26	4.38 ± 3.04	0.000
Activated partial thromboplastin time (s), mean ± SD
Before	33.1 ± 6.4	32.2 ± 5.7	0.242
1 d	35.6 ± 7.3	35.7 ± 6.6	0.925
3 d	34.6 ± 6.6	32.8 ± 7.3	0.523
7 d	62.3 ± 6.3	32.3 ± 6.6	0.247

SD: Standard deviation.