Objective To observe the change and relation between heart rate variability (HRV) and renin-angiotensin-aldostemne system (RAAS) under epidural anesthesia.Methods 16 cases patients ASAⅠ-Ⅱwere chose for epidural anesthesia.HRV,MAP and RT had been monitoring at pre-anesthesia (T1),15 min after inducing (T2),1 min after incising (T3),1 min pre-probing (T4),5 min after dragging uterus (T5), 1min after cutting uterus (T6) and the end point (T7).At same time,renin angiotensin and aldostemne were measured by drawing radial arterial blood when it was T1,T2,T3,T5,T7.Results Comparing with T1,LF/ HF increased significantly (P

Objective To explore the application effects of simulation diagnosis teaching in practical teaching of obstetrics and gynecology.Methods Students were divided into simulation teaching group(n=46) and traditional teaching group(n=46).Survey was conducted among simulation teaching group and traditional teaching group concerning clinical teaching of obstetrics and gynecology.Teaching effects were evaluated by questionnaire and examination.SPSS 13.0 statistics software was used to do the analysis.Enumeration data was analyzed by chi-square test while measurement data by t test.P＜0.05 stands for statistically significant difference.Results There were significant differences in improving students' clinical thinking and practical ability between two groups(P＜0.05).Satisfaction degree of simulation teaching group was significantly higher than that of traditional teaching group.Examination results of simulation teaching group was significantly higher than that of traditional teaching group(theoretical exam:P=0.001; operational exam:P=0.000).Conclusions Simulation diagnosis teaching can provide students more opportunities to practice and improve students' clinical thinking ability and clinical practice ability.

Background Excimer laser corneal refractive surgery is widely used because it reduces the dependency of refractive error eye to glasses.However,the adverse effects of anti-inflammatory drugs is a problem after operation.Lotemax eyedrops is a kind of steroidal anti-inflammatory drug,with a good effect on the operative eye.But its influence on intraocular pressure(IOP) after long-term topical administration is less studied.Objective This study was to investigate the influence of lotemax eyedrops on IOP after long-term topical administration in myopic eyes received excimer laser corneal refractive surgery.Methods An one-month retrospective case serial study was adopted.The case history data of 1552 eyes from 1552 Patients who received excimer laser corneal refractive surgery were collected in Tangshan Eye Hospital from 2011 January to 2012 January,including 321 eyes with laser in situ keratomileusis(LASIK),608 eyes with sub-Bowman keratomileusis (SBK) and 623 eyes with femtosecond laser for flap excimer laser in situ keratomileusis(FS-LASIK).Lotemax eyedrops was topically administered after operation 4 times per day initial and then decreased 1 time weekly for 1 month.IOP was measured in before,1 week,2 weeks,3 weeks,4 weeks after operation with non-contact tonometer.The increasing range of IOP was divided into ＜5 mmHg,5-15 mmHg and ＞ 15 mmHg after operation.Optical head parameters were measured by Heidelberg retina tomography when IOP increasing after operation.Results Within 1 month,elevated IOP was found in 47 of 1552 eyes after administration of lotemax eyedrops,including 3.12％ (10/321) in the LASIK group,3.29％ (20/608) in the SBK group and 2.73％ (17/623) in the FS-LASIK group,without significant difference among them(x2 =1.95,P＞0.05).The IOP elevated 1 week after operation and remained normal after that till drug withdrawal in all eyes.There were no significant differences in the disk area (1.65 ±0.44) mm2 vs.(1.66 ±0.44) mm2,disk volume (0.40 ±0.09)mm3 vs.(0.39±0.08) mm3 and mean nerve fiber layer thickness (0.28 ± 0.08) mm vs.(0.29 ± 0.07) mm in IOP elevation duration compared with 1 month after IOP recovery(t =0.34,0.81,0.48,P＞0.05).Conclusions Topical administration of 0.5％ lotemax eyedrops after excimer laser corneal refractive surgery leads to reversible high IOP.It is very important to monitor the IOP during use of the drug.

In order to improve the teaching quality of experimental teaching of laboratory diagnosis and to cultivate the clinical ideation of medical students,we have been trying a series of reform in this course and obtained good results.Here,our experience in the selection of teaching contents,the improvement of teaching methods,and the setting of experimental assessment have been summarized and investigated.

AlM: To investigate and evaluate the prevalence of xerophthalmia among aerospace science and technology staff and its influencing factors for the eye health guidance.
METHODS: The staff underwent physical examination in our examination center from September 2013 to June 2014 were preliminary screened, and those patients with symptoms of dry eye were investigated with questionnaires and diagnosed by basic lacrimal secretion test ( Schirmer l ) , breakup time of tear film ( BUT ) test and fluorescein ( FL) staining test .
RESULTS: There were 606 complaints of dry eye symptoms of the 1 000 premiers, distributed in random (60. 6%), and 432 employees were diagnosed (43. 2%). The positive rate of dry eye was 71. 3%. The causes of xerophthalmia, besides of gender, age, also include a variety of factors such as air-conditioner, heating, video terminals, sleep time, etc.
CONCLUSlON: Dry eye, an epidemic disease, has a variety of symptoms and complex etiology, the main causes of aerospace science and technology staff with dry eye is working environment and some local factors. We can give appropriate health guidance according to the different factors. Meanwhile the relevant series of dry eye screening should also be taken as a routine examination in ophthalmic examination.

Objective To study the respiratory function tests reference values of healthy children in China with impulse oscillometry(IOS).Methods The respiratory function tests reference values of 102 children were measured by using masterscreen IOS and analysed it.Results Impedance and airway resistance reference values decreased as age and body height increased step by step,at the same time capacitance decreased.The difference was significant while the predicted values compared to the measured data.Conclusion We shall use respiratory function tests reference values which are established by us,and the difference is significant compared with the foreign predicted(values.)

ObjectiveTo observe the therapeutic effect and prognosis of nimodipine on severe traumatic brain injury. Methods64 patients with severe traumatic brain injury were divided into the nimodipine group(32 cases) and the routine treatment group(32 cases). The Glasgow Coma Scale(GCS) was assessed before and after the treatment. The Activities of Daily Living(ADL) and cognitive ability were evaluated in clear-headed patients. After 6 months follow-up, the Glasgow Outcome Scale (GOS), Bathel index and Mini Mental State Examination (MMSE) score were carried on.ResultsIn both of the two groups, GCS score were increased distinctively after treatment. The MMSE score in nimodipine group was higher than that of routine treatment group. There was no statistic difference in GOS and ADL between two groups after 6 months, but MMSE in nimodipine group was higher than that of routine treatment group. Conclusions Nimodipine could be helpful in cognitive function. The prognosis of severe traumatic brain injury lied on the degree of cerebral damage.

Objective:To analyze clinical characteristics of ketosis-associated prurigo pigmentosa after ketogenic diet and bariatric surgery.Methods:Clinical data were collected from patients with ketosis-associated prurigo pigmentosa, who were diagnosed and treated in Department of Dermatology, Peking University People′s Hospital from September 2018 to September 2020. The clinical characteristics, sequelae and therapeutic effect of dietary modification were analyzed and summarized.Results:A total of 6 patients with ketosis-associated prurigo pigmentosa were collected, including 5 females who developed prurigo pigmentosa after ketogenic diet, and 1 male who developed prurigo pigmentosa after bariatric surgery. The skin lesions mainly involved the chest, back, waist and abdomen, and rarely involved the eyelids, axillae, elbows and mons pubis. Common skin lesions included urticaria-like erythema, papules and pigmentation arranged in a reticular distribution, and rare skin lesions included mung bean- to soybean-sized blisters, whose walls were liable to break. Among 5 patients undergoing routine urine analysis, 4 were positive (from + to ++++) for ketone bodies in the urine, and 3 were positive for urinary protein (+) . Pathological examination in 2 patients showed epidermal spongiosis, scattered necrotic keratinocytes, basal cell liquefaction, lymphocyte infiltration in the superficial dermis, and erythrocyte extravasation. The 6 patients were advised to eat staple foods. After dietary modification, 5 patients were nearly cured within 1 week; 1 patient, who continued ketogenic diet for weight loss, still received marked improvement after the treatment with minocycline at a dose of 100 mg/d in spite of restriction of carbohydrate intake. The levels of urinary ketone bodies and urinary protein in the 6 patients all returned to normal within 1 week after treatment.Conclusions:Ketosis plays an important role in the occurrence of prurigo pigmentosa. Dietary modification alone or adjuvant medical treatment such as minocycline is effective for the treatment of ketosis-related prurigo pigmentosa.

Adult ; Biomarkers ; blood ; Blood Proteins ; metabolism ; Humans ; Male ; Middle Aged ; Silicosis ; blood

Objective To compare the effect of active compression-decompression cardiopulmonary resuscitation(ACD-CPR) with standard- cardiopulmonary resuscitation(S-CPR) on ventricular function in a canine ventricular fibrillation model. Methods Ventricular fibrillation was induced in anesthetized and instrumented canine. Twenty-four dogs were randomly assigned to either ACD-CPR group or S-CPR group.After 4 minutes of untreated VF,two-dimension echocardiography was used to evaluate the left ventricular end-diastolic volume(LVEDV),left ventricular end-systolic volume(LVESV) and left ventricular ejection fraction (LVEF) of every canine of the two groups when they were undergoing cardiopulmonary resuscitation. Results During ventricular fibrillation, both ACD-CPR group and S-CPR group showed decreased LVEDV compared with pre-ventricular fibrillation, but not statistically significant( P ＞0.05).LVEDV was increased in ACD-CPR group compared with S-CPR group, but not statistically significant (P＞ 0. 05). Both ACD-CPR group and S-CPR group showed significantly increased LVESV compared with pre-ventricular fibrillation,of which the difference was statistically significant ( P ＜0. 001). Both ACD-CPRgroup and S-CPR group showed significantly decreased LVEF compared with pre-ventricular fibrillation,of which the difference was statistically significant (P ＜0. 001). LVEF was increased in ACD-CPR group compared with S-CPR group,of which the difference was statistically significant ( P = 0.019). Conclusions Compared with S-CPR,ACD-CPR resulted in higher LVEF.