Pulmonary function testing is essential for early detection,evaluation of severity and prognosis of respiratory diseases,evaluation of drugs and other therapy effects,identification of pathological changes of breathing difficulties,and assessment in surgery tolerance,etc.With the development of children lung function testing and the study of various infectious and non-infectious diseases,lung function test in children will be gradually and widely used in pediatric clinical research and practice.This review summarizes the methods of children lung function testing and clinical applications at home and abroad.

Objective To investigate the effects of oxytocin on hemodynamies in patients under epidural block.Methods Twenty-six selective myomectomy patients were randomly divided into epidural block group(E) and general anesthesia group(G) with 13 cases each.Epidural anesthesia with 2 % lidocaine was performed with the blocking plane of T_6-T_8.Group G was given general anesthesia with propofol,fentanyl,remifentanyl and vecuroniurn.Oxytocin 5 U was injected in 30 s when hysteromyoma was removed and the hemodynamics was stable.MAP and HR were recorded before and after oxytocin injection.Results Compared to those before,MAP was decreased and HR was increased after oxytocin injection in both groups(P<0.05 or P<0.01).The decrease of MAP was slower but lasted for a longer period in group E than those in group G(P<0.05 or P<0.01).Conclusion Epidural blockade may aggravate the hypotensive effect of oxytocin and inhibit oxytocin-induced HR increasise.

Sleep disordered breathing (SDB) is common,especially the obstructive sleep apnea,and the severity increases as pregnancy progresses.The review identifies the risk factors,possible mechanisms and clinical manifestations for sleep disordered breathing in pregnancy through investigating pregnant women,approaches the relationship between sleep disordered breathing in pregnant women and the complications of the mother and fetus,especially between the obstructive sleep apnea and hypertensive disorder complicating pregnancy or gestational diabetes mellitus,and the treatment of sleep disordered breathing in pregnancy.

0.05).The correlation of reduction of intra-disc pressure and accumulation of ablation time was positive.Compared with intra-disc pressure in control group,the pressure change of all ablation groups was statistically significant(P

目的探讨盐酸米托蒽醌(MTZ)膀胱内灌注预防膀胱癌术后复发的临床疗效。方法对63例浅表性膀胱癌患者行经尿道膀胱肿瘤切除术或膀胱部份切除术,术后用米托蒽醌12mg进行膀胱灌注,随访6—30月。 结果63例患者均未见全身性药物不良反应,复发6例(9.2%)。结论米托蒽醌膀胱灌注预防膀胱癌术后复发疗效满意,安全性好。

BACKGROUND:There are studies on three-dimensional finite element analysis of total knee replacement, but few research concerns contact pressure and contact area inside and outside polyethylene liner of fixed prosthesis and rotating platform prosthesis in total knee replacement. OBJECTIVE:To explore the contact pressure and contact area inside and outside polyethylene liner of fixed platform prosthesis and rotating platform prosthesis in total knee replacement. METHODS:We established three-dimensional finite element models of fixed platform prosthesis and rotating platform prosthesis in total knee replacement and compared contact pressure and contact area inside and outside polyethylene liner of fixed platform prosthesis and rotating platform prosthesis in total knee replacement. RESULTS AND CONCLUSION:The peak contact pressure inside and outside polyethylene liner of fixed platform prosthesis and rotating platform prosthesis in total knee replacement was minimum at 0° of genuflex. The peak contact pressure inside polyethylene liner was higher than that outside polyethylene liner of fixed platform prosthesis and rotating platform prosthesis in total knee replacement at 0°-90° of genuflex (P<0.05). The peak contact pressure inside and outside polyethylene liner of fixed platform prosthesis was higher than that of rotating platform prosthesis in total knee replacement at 60°-120° of genuflex (P<0.05). The contact area inside and outside polyethylene liner of fixed platform prosthesis and rotating platform prosthesis in total knee replacement was maximum at 0° of genuflex. The contact area inside polyethylene liner of fixed platform prosthesis in total knee replacement was lower than that of outside at 0°-30° of genuflex (P<0.05). The contact area inside polyethylene liner of fixed platform prosthesis in total knee replacement was lower than that of outside at 0°-90° of genuflex (P<0.05). The contact area inside and outside polyethylene liner of fixed platform prosthesis was lower than that of rotating platform prosthesis in total knee replacement at 30°-120° of genuflex (P<0.05). These results suggested that peak contact pressure inside polyethylene liner of fixed and rotating platform prostheses was higher than that outside in total knee replacement, and the inside contact area was lower than that of outside. Inside and outside contact pressure of the rotating platform prosthesis was lower than that of fixed platform prosthesis. Inside and outside contact area of the rotating platform prosthesis was higher than that of fixed platform prosthesis.

Objective:To improve the efficient use of assets, prevent and eliminate the waste and loss.Methods: We improved the standards of medical scrapped evaluation and made full use of the residual value of scrapped equipment for the issues that the program and technical appraisal of medical scrapped evaluation were not standardized, the residual value was not accurate and the disposal was too careless, etc.Results: The residual value was useful for the standard and reasonable approval process of scrapped medical equipment.Conclusion: The perfect disposal process of medical equipment ensures that the fixed assets of hospital are complete and security. Making full use of residual value of the scrapped equipment can increase efficiency of the use of hospital assets and eliminate the waste of assets.

Objective To investigate unhealthy behaviors and their influence on community residents,and to evaluate the effectiveness of modified behaviors. Methods A total of 1230 community residents were randomly enrolled from 8 of 16 communities in Yantian District of Shenzhen City. The behavior information of the participants was collected through face-to-face interviews. A systematic intervention was carried out to the target residents, and the outcomes were evaluated. Results The awareness of healthy behaviors was improved and unhealthy behaviors (i. e. lack of physical activity,over-intake of salt, cigarette smoking,alcohol consumption,irregular health check-up, long-time watching TV) were significantly reduced ( P < 0. 05 ). Conclusions Systematic intervention could be an effective way to reduce unhealthy behaviors of community residents.

BACKGROUND: The effective fraction of stem and leaf of Scutellaria baicalensis, total flavones from stem and leaf of Scutellaria baicalensis (SSTF) can improve blood flow of coronary artery and cerebral blood flow,prolong the time of cruor and prothrombin and decrease blood lipid.OBJECTIVE: To observe the effect of SSTF on blood pressure of normal rats and rat models of renal artery stenosis.DESIGN: A completely randomized and controlled experiment.SETTING: Institute of Traditional Chinese Medicine, Chengde Medical College (Key Laboratory of Research and Exploiture of Traditional Chinese Medicine in Hebei Province) MATERIALS: Totally 70 Wistar rats, aged 2 months old , of clean degree, with body mass of (250±50) g, male and female in half, with permission number of 01-3003 , were provided by the Experimental Animal Research Institute, Chinese Academy of Medical Sciences. SSTF was provided by the phytochemical laboratory of Institute of Traditional Chinese Medicine, Chengde Medical College; Niuhuangjiangya pian was produced by Shiyitang Pharmaceutical Factory, Hayao Company (batch number:9802304).METHODS: The experiment was conducted in Institute of Traditional Chinese Medicine, Chengde Medical College from January to October 1999. The rats were raised in the environment of (22±1) ℃, with relative humidity of 50%-55%, of daylight and darkness for 12 hours for each. ①In the experiment 1, we studied the effect of SSTF on the blood pressure of normal rats. Totally 30 Wistar rats were randomly divided into SSTF group of 100 mg/kg (n=10, 100 mg/kg SSTF), SSTF group of 50 mg/kg (n=10, 50 mg/kg SSTF), and normal saline control group (n=10, 0.5 mL /100 g normal saline). Before being administrated, rats were anaesthetized by intraperitoneal injection of pentobarbital sodium. Blood pressure was recorded by MecLab/4e four-channel physiologic instrument. Then intragastric administration of SSTF and normal saline were performed on the rats in SSTF groups and normal saline control group respectively. Thirty minutes later, the changes of blood pressure of rats in each group were observed successively. ②In the experiment 2, we studied the effect of SSTF on the blood pressure of model rats with hypertension induced by renal artery stenosis. The rest 40 Wistar rats were randomly divided into SSTF group of high dosage, SSTF group of low dosage, normal saline control group, Niuhuangjiangya pian group, with 10 rats in each group. Rats in each group were created into rat models with hypertension induced by renal artery stenosis according to methods from the literatures. Two weeks after operation, intragastric administration of 100 mg/kg SSTF, 50 mg/kg SSTF, 0.5 mL/100 g normal saline and 1 200 mg/kg Niuhuangjiangya pian were daily performed on the rats in four groups respectively for one month successively. Carotid blood pressure of rats in all groups was measured.MAIN OUTCOME MEASURES: ① The effect of SSTF on the blood pressure of normal rats. ②The effect of SSTF on the blood pressure of model rats with hypertension induced by arteria renalis stenosis.RESULTS: ① Effect of SSTF on the blood pressure of normal rats: Blood pressure of SSTF group of 50 mg/kg and SSTF group of 100 mg/kg presented a little decrease compared with before administration. There was no significant difference when compared with normal saline control group (P ＞ 0.05). ②Effeet of SSTF on the blood pressure of model rats with hypertension induced by arteria renalis stenosis: Blood pressure of rats with hypertension in normal saline control group was significantly increased after modeling; Blood pressure of rats with hypertension in SSTF group of 50 mg/kg , SSTF group of 100 mg/kg and Niuhuangjiangya pian group was significantly lower than that in the normal saline control group, especially significantly in SSTF group of 100 mg/kg [(126.3±14.5),(120.2±15.9),(127.8 ±23.4 ) ,(139.6±15.8) mm Hg; P ＜ 0.05-0.01].CONCLUSION: SSTF has the significant hypotensive effect on model rats with hypertension; it does not have obvious effect on normal rats.

Objectiveto detect polymorphism of asthma related genes. Methods Patients diagnosed asthma were divided into twogroups , one group has genetic susceptibility , the other has no such character. DNA were extracted from the peripheral blood, then TG se-quence in second intron of IL-4 was amplified by PCR, the polymorphism of that segment were then detected through 8% po]yacrylamidegel. Resultfour kinds of penotype were found in such segment. The frequency of phenotype 1 and type 2 of in test group are statisticallydifferent from that in the check group. But the other two phenotype frequencies are just the same in two groups. Conclusionthe differentfrequency of phenotype I and phenotype 2 in two groups may give us some meaning in asthma genetics.