Intelligent Nursing Interventions Guided by the Integrated Theory of Health Behavior Change for Preventing Deep Vein Thrombosis in Critically Ill Patients

Aims/Background: Deep vein thrombosis (DVT) is a life-threatening complication in critically ill patients, and conventional prevention strategies are often hindered by poor adherence. This study aims to evaluate the clinical effectiveness of intelligent nursing interventions based on the Integrated Theory of Health Behavior Change (ITHBC) in preventing DVT among critically ill patients. Methods: A retrospective study was conducted on 280 critically ill patients admitted to the intensive care unit of The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University between January 2022 and December 2024. Patients were divided into a control group (n = 138), which received routine care, or an observation group (n = 142), which received additional ITHBC-based intelligent nursing interventions. The incidence of DVT, nursing adherence, hematological parameters (D-dimer, prothrombin time (PT), activated partial thromboplastin time (APTT)), complications, and patient satisfaction were compared between groups. Results: The incidence of DVT was significantly lower in the observation group than in the control group (7.7% vs. 18.1%, p 0.05). No significant differences were found in complication rates (p > 0.05). Patient satisfaction was significantly higher in the observation group (96.5% vs. 87.7%, p < 0.05). Conclusion: ITHBC-guided intelligent nursing interventions effectively reduced the incidence of DVT, improved patient adherence and satisfaction, and demonstrated strong safety and clinical applicability in critically ill patients.