Observation and Treatment of Pulmonary Microthrombosis in Childhood Pneumonia With Elevated D-dimer

Detailed Summary

Objective 1\. Master the clinical feathers, imaging features and laboratory diagnosis characteristics and economic costs of children pneumonia with higher D-dimer: 1. Compare the characteristics of different groups of children in the course of the disease，clinicalsymptoms and signs; 2. All the children in the study need to do enhanced CT, to observe if there were intrapulmonary vascular thrombosis and necrosis pneumonia signs; 3. compared changes of coagulation index beside D-dimer. 2\. Compared with low molecular weight heparin prevention Disseminated intravascular coagulation（DIC） dose and instructions to the recommended dose in safety and effectiveness,and proposed elevated anticoagulation D-Dimer specification of the clinical treatment of children with pneumonia. Background and rationale: Pneumonia is the main cause of lung function injury and death in children. The high blood coagulation state can lead to the formation of pulmonary vascular thrombosis, local pulmonary ischemia and necrosis, which may be an important mechanism for the occurrence of necrotizing pneumonia and pulmonary embolism in children with pneumonia. Elevated D-dimer is an important predictor of pulmonary thrombosis and necrotizing pneumonia. At present, D-Dimer in many children with severe pneumonia is found to increase, the symptom is severe, the late stage of the performance of necrotizing pneumonia, seriously affect the children's lung function and quality of life.

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