Results Chronic diseases aging surgical operations postoperative dehydration therapy postoperative hemiplegia and long-term lying in bed intravenous cannula were risk factors of postoperative DVT in patients with neurosurgical operation .

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Statistical analysis showed significant differences ( P0.001 ) between the two groups in such aspects as surgical time blood loss bed stay postoperative pain in bone removal area and nerve recovery ( JOA score ) .

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