RESUMO
Objective To investigate the change and clinical significance of blood D-dimer level during perioperative period in ad-vanced age hip fracture.Methods The blood D-dimer level in 60 patients aged over 80 years old with hip fracture was detected be-fore operation and after operation,which including at admission(T1 ),immediately preoperation(T2 ),immediately postoperation (T3 )and on postoperative 1 d (T4 ).Results The positive rates of D-dimer at T1 ,T2 ,T3 and T4 were 6.67%,16.45%,41.67%and 80.00% respectively;there were statistically significant differences between T3 ,T4 and T1 ,T2 ,between T3 and T4 (P 0.05).Conclusion The level of D-dimer in advanced age hip fracture has significant change before and after operation.The change of the D-dimer positive rate is an effective index for preven-ting lower limbs deep venous thrombosis and has the important clinical significance to dynamically monitor the D-dimer level during perioperative period in advanced age hip fracture.
RESUMO
Objective To establish the weights of risk factors indicators for lower limbs deep vein thrombosis through the scientific research methods.Methods 21 experts were consulted for two rounds of questionnaires survey with Delphi method,according to the experts'opinion,analytic hierarchy process (AHP) was used to calculate the weights of indicators in grade one and the experts'evaluation was used to calculate the weights of indicators in grade two.Results The weight coefficients of grade one including vascular endothelial injury,blood high condensation state and slow blood stream were 0.3325,0.5278 and 0.1396 respectively.The items with maximal weights of the 21 indicators in grade two was vascular trauma,in particular vein injury(0.0770).The Kendall's W of the indicators in grade two was 0.422.Conclusions Through qualitative and quantitative research methods,the risk factors indicators which provide the reference for the prevention of lower limbs deep vein thrombosis are scientific and reliable.