Development Of The Risk Assessment Scale For Deep Venous Thrombosis In Hospitalized Medical Patients

Objective:The purpose of the study is to develop a "risk assessment scale for deep venous thrombosis(DVT)in hospitalized medical patients",and provide reference for the prevention of DVT in hospitalized medical patients.Methods:1.Based on the Virchow's triad,the review of the literature and the characteristics of hospitalized medical patients,we have initially developed the consultation questionnaire for the risk assessment of DVT in hospitalized medical patients.The indicators were filtered through two rounds of consultation.2.A retrospective case-control study was used to verify the clinical applicability of the scale.Collect patients' clinical data and compare the risk assessment results of the two groups of patients.Draw the Receiver operating characteristic curve(ROC)and calculate the area under the curve to determine the boundary value of the scale.The percentile method was used to stratify the patient's risk of DVT.Results:1.A total of 23 experts participated in consultation.The study eventually formed a risk assessment scale for DVT in hospitalized medical patients with 34 indicators.2.The area under the ROC curve of the scale was 0.810.The Youden index of the scale was the maximum when the score greater than 7,and the sensitivity and the specificity were 81.14%and 65.14%.Therefore,we determined the score of 8 as the threshold of the scale.3.The study used the percentile method to stratify the patient's risk of DVT and the results were as follows:first level,the score ranges between 8 and 10;second level,the score ranges between 11 and 15;and the third level,the score exceeds 16.4.The average risk score in the case group was 11.38 ± 4.29,significantly higher than the mean score in the control group 6.37 ± 3.77.The difference was statistically significant(P<0.01).Conclusions:1.The study developed the risk assessment scale for DVT in hospitalized medical patients and determined the boundary value of the scale.2.The retrospective case-control study results indicated that the scale can effectively predict the risk of DVT in hospitalized medical patients,and it can provide reference for the prevention of DVT in hospitalized medical patients.