Objective　To study the effects of platelet to lymphocyte ratio and D-dimer to fibrinogen ratio combined with WELLS score on the prediction of lower extremity deep vein thrombosis in young cerebral hemorrhage (YCH) patients.Methods　One hundred and nine YCH patients in our hospital were divided into thrombus group (33 cases) and non-thrombus group (76 cases).The diagnostic value of PLR and DFR combined with WELLS score was evaluated by areas under the curve (AUC),sensitivity and specificity of receiver operating characteristic curve (ROC).Results　PLR,DFR and WELLS score of thrombus group were (149.20±52.17),(118.46±8.37) and (2.67±0.48) respectively,and those of non-thrombus group were (95.27±29.48),(75.28±10.16) and (0.72±0.34) respectively,the differences were statistically significant (P<0.05).The sensitivity,specificity,missed diagnosis rate and misdiagnosis rate were 97.65%,92.43%,2.35% and 7.57%,respectively.AUC value of area under ROC curve was 0.951 (P<0.05).Conclusion　PLR,DFR combined with WELLS score has high specificity in predicting LDVTE in YCH patients,and the missed diagnosis rate and misdiagnosis rate are low.It has good clinical practical value and is worthy of popularization and application.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.