Objective To compare the the effect of PCI on short term (3 months) left ventricular diastolic function in the old patients with acute myocardial infarction (AMI) (≥ 65 years old). Methods 40 old AMI patients were divided into PCI group and non-operation group (pure medicine treatment group). The changes of left ventricular diastolic function were observed 3 months after operation which were compared with that before treatment so to define the effect of PCI. The major indexes were LA, LV, LVEF, E/A, and S/D. Results LA and LV in PCI group were not significandy changes but they were increased in non-operation group (P < 0.05). Although the left ventricular diastolic function in both group was continually impaird,it was better in PCI group than in non-operation greup(P <0.05). Conclusion PCI can prolong the progress of left heart remodeling and the excerbation of left ventricular diastolic function in old AMI patients.

Objective To explore the clinical effect of posterior pedicle screw internal fixation in the treatment of multiple level noncontiguous thoracolumbar fractures.Methods Thirteen patients with multiple level noncontiguous thoracolumbar fractures were treated by posterior pedicle screw internal fixation.The Frankel score,percentage of vertebral compression and Cobb angle of the injured vertebral segment were analyzed to evaluate the surgery efficacy.Results All patients were followed up from 12 to 24 months ( averaged 15 months ).All cases achieved bone fusion with no implant failure.The Cobb angle of the injured vertebral segment was corrected from preoperative(22.2 ±5.3) degree to postoperative(5.3 ±3.5) degree and(6.2 ±3.6) degree at the last follow up.The percentage of vertebral compression was corrected from preoperative (45.7 ± 14.1 )％ to postoperative ( 6.1 ± 3.8 ) ％ and ( 7.2 ± 3.9 ) ％ at the last follow up.All improvements showed significant differences when compared statistically( t =15.03,t =12.05,Ps ＜0.05 ).The spinal cord function was improved 1 to 2 degree in all patients except 2 patients of grade A.Conclusion The posterior fixation with pedicle screw is a secure,safe and effective method in treating multiple level noncontiguous thoracolumbar fracture.