The Role of Intermittent Pneumatic Compression Anti-Thrombotic System in Reducing the Recurrence of Lower Extremity Deep Vein Thrombosis after Intravenous Thrombolysis for Acute Cerebral Infarction

INTERVENTION: Experimental group:Intermittent Pneumatic Pressure Anti‐Thrombotic System;Control group:N/A; CONDITION: Diagnosed with acute cerebral infarction and received intravenous thrombolytic therapy (rt‐PA or urokinase) PRIMARY OUTCOME: Incidence rate of lower extremity DVT within 7 days postoperatively;D‐dimer; SECONDARY OUTCOME: Incidence of symptomatic DVT (such as swelling and pain in the affected limb) and pulmonary embolism; INCLUSION CRITERIA: 1.Diagnosed with acute cerebral infarction and received intravenous thrombolytic therapy (rt‐PA or urokinase); 2.Age 18‐80 years; 3.Post‐thrombolysis NIHSS score <= 25 points;