Objective:To evaluate the changes of maxillary sinus density after mid-facial fractures.Methods: A retrospective review was performed on patients with mid-facial fractures from 1995 to 2006.The changes of maxillary sinus density were evaluated by Water's view.Results: There were 219 cases,including 165 male and 54 female patients,who showed changes of maxillary sinus density on Water's view.Their ages ranged from 3 to 78 years.78 cases had follow-up plain radiograph.Among them,51 cases had normal maxillary sinus density,the density of sinuses of 19 cases became lower and the density of sinuses of 8 cases did not change or became higher.Conclusion: The maxillary sinusitis is a late complication and develops in some maxillary sinus after treatment of mid-facial fractures.Attention to the maxillary sinus density should be paied when following-up.

0.05).Intracellular Ca2+ FI in rat ventricular myocytes induced by KCl was inhibited significantly in group B2 and B3 compared with that in group C(P

Based on the analysis on the most common type of scientific research and clinical application of stem cells, including embryonic stem cells , hematopoietic stem cells and mesenchymal stem cells as the breakthrough point, discusses common phenomenon and problems of ethics , scientific research and clinical study the moral life science century new topic, hope scientists, physicians, ethicists, caused by the administrative departments for pub-lic health thought , promote stem cells healthy and steady development .

Objective To evaluate the applicability of Mini-Nutritional Assessment(MNA),Short-Form Mini-Nutritional Assessment(MNA-SF)in the malnutrition screening of patients with Alzheimer's disease(AD).Methods MNA and MNA-SF were performed in 267 AD patients.The correlation between the screening results were compared.Results According to MNA,the rates of malnutrition,potential malnutrition,and normal nutritional status were 59.7%,20.9%,and 19.4%,respectively.The sensitivity was 73.4%and the specificity was 60.1%.According to MNA-SF,the rates of malnutrition and normal nutritional status were 70.4%and 29.6%.The sensitivity was 50.6%and the specificity was 92.4%.The screening results of these two tools were significantly correlated(r=0.924,P<0.01).Conclusions MNA and MNA-SF are reliable tools for evaluating the nutritional status of AD patients.While MNA-SF is more convenient and feasible,the combination of these two tools may be helpful.

Objective To analyse the alterative characteristics of electrophysiology by detecting somatosensory evoked potential(SEP) during cerebral remodeling after transfer of healthy C7 nerve root both in patients and normal individuals. Methods From 2002 to 2003, 12 cases of the left total brachial plexus nerve root avulsion were surgically treated by transferring healthy C7 nerve root to impaired median nerve through bridged ulnar nerve. The waveform of SEP of bilateral cortical expressions were recorded after stimulating median nerve of impaired upper extremity at the wrist and elbow. Meanwhile, latent period and amplitude of wave of SEP, and nerve conduction velocity from the level of wrist to elbow were exhibited and compared. Results There were differences of the latency and amplitude of SEP in normal individuals between two sides of cerebrum to some extent. In the healthy sides (first group), difference of latency of SEP on two sides of cerebral cortex had no statistical significance but in the reverse for the amplitude of SEP. For the diseased sides(second group), difference of amplitude of SEP for both sides of cerebral cortex between the patients and the nonmal individuals were of statistical significance, but on the contrary for the change of latency of SEP. Conclusion Cerebral cortex dominating affected extremity is able to bring up functional remodeling electrophysiologically after nerve transfer of healthy C7 nerve root. Shortened latency and augmented amplitude discrepancy of SEP recorded on both sides of cerebral cortex were preliminary electrophysiological criterions. After contralateral C7 nerve root transfer, the examination of SEP can offer data of corresponding cortex "reinnervation", which provides objective evidence for further treatment to promote functional recovery and cortical plasticity.

Objective There are many methods to treat adult humeral shaft fracture. Plates fixation and intramedullary locking nail are two important methods. Though plate fixation are "gold criterion", there were many defects limited its development. With humeral intramedullary nail widely used, this study is to analysis and investigates the complications of locked nailing in humeral shaft fractures. Methods Between January 2000 and January 2004, 90 humeral shaft fractures (74 acute fractures and 16 delayed unions or nonunions) in 89 patients were treated with humeral intramedullary locking nails and followed up for an average of 25.4 months(12-34 months). There were 56 males and 33 females, with an average age of 39.3 years. Acute fractures included 62 closed, 7 Gustilo type Ⅰ, 3 type Ⅱ and 2 type Ⅲa open fractures. 12 nonunions had previous operations. 8 patients had radial nerve palsy. In general, acute fractures were treated with closed nailing and nonunions were treated with open nailing with bone grafting. 53 proximal humeral fracture were treated by antegrade nail, the others with distal humeral fracture were treated by retrograde nail. Results In total, 17 patients had 18 significant complications. 5 of them were persistent nonunions. There was no statistics difference between antegrade nail and retrograde nail. The others were protruded screws, fracture gap, shoulder impairment, elbow impairment, angular malunion, deep infection and postnailing radial nerve palsy. Conclusion The risk of operative comminution was significantly higher in retrograde nailing, and operative comminution resulted in a significantly higher risk of nonunion. Many complications of humeral locked nailing can be prevented by improving the implant design or surgical techniques.

Objective To investigate polymorphism of CD40 gene and its relation with autoimmune thyroid disorders(AITD) in China's Northwest region.Methods The study recruited 372 subjects: 165 Graves' disease(GD) and 113 Hashimoto's thyroiditis(HT) and 93 healthy subjects as controls.① Using PCR-restriction fragment length polymorphism(PCR-RFLP) to analyze the C/T polymorphism in the 5′UTR and the-58038T point mutation in exon3.② Using amplification refractory mutation system-PCR(ARMS-PCR) to analyze the C64610G point mutation in exon9.Results ① There were significant differences in allele frequencies of C and genotype CC between GD group and control group in 5′UTR C(-1)T(P

This article explains the development,intension and distinctness of DR and CR,and discusses their composing and using methods.In addition,this article expounds how DR and CR take images,how to equip and use them in the radiodiagnosis section and differences between them.

OBJECTIVE To investigate the clinical distribution and drug resistance of the nonfermenters between 2000 and 2004 in our hospital. METHODS The bacteria were identified by ATB,drug resistance test was then performed by K-B method. RESULTS A total of 875 strains of nonfermentative Gram-negative bacteria were isolated from various clinical specimens during Jan 2000-Dec 2004.The dominant strains were Pseudomonas aeruginosa((313 strains)),Acinetobacter baumannii(287 strains) and Stenotrophomonas maltophilia(180 strains).They happened most commonly in the respiratory system.The positive rate from sputum and pharyngeal probe was 73.7% and 6.2%.The resistance rate of P.aeruginosa and A.baumannii to imipenem was the lowest,accounted for 17.6% and 7.7%.These nonfermenters were highly resistant to cefalotin,ceftriaxone and sulfamethoxazole/trimethoprim.The resistance rate of S.maltophilia to sulfamethoxazole/trimethoprim was lower than the others,the rate being 7.8%. CONCLUSIONS The drug resistance of nonfermenters to frequently-used antibacterials is higher.Due to the high resistant rates,the drugs should be chosen according to the result of the drug susceptibility test.

OBJECTIVE To analyze the risk factors of pulmonary infection after liver transplantation and improve treatment strategy.METHODS Forty six adult patients who underwent liver transplantation were divided into two groups: pulmonary infection group and non-pulmonary infection group.An analysis was performed for the commonly used variables.RESULTS The frequency of pulmonary infection after liver transplantation was 43.5%,the mortality rate in the patients who developed pulmonary infection was 60%.Intraoperative total fluid perfusion, mechanical ventilatory time,serum creatinine,albumin,abdominal bleeding,and hydrothorax after liver transplantation were risk factors of pulmonary infection(P