Excimer laser was found in 1975, and has been used in corneal refractive surgery, which made a great progress and become rapidly developed. ArF laser of 193 nm has high accuracy because it can gasify corneal tissue molecule. Moreover, it does not produce heat effect on tissues surrounding irradiated sites, so not produce adverse effect on corneal structure. At present, excimer laser has been successfully used in corneal radial incision, excimer laser corneal refractive surgery, laser in situ keratomileusis, laser epithelial keratomileusis and laser subepithelial keratomileusis. With increasing understanding of excimer laser and accumulating clinical experience, novel, accurate and predictive excimer laser corneal refractive surgery will be developed.

Objective To compare the shapes of posterior corneal surface after laser subepitheliar keratomileusis(LASEK)and laser in situ keratomileusis(LASIK).Methods The 268 eyes of 134 cases were divided into two groups:The first group had 158 eyes of 79 cases,which were accepted the LASEK and whose average diopter was(-5.67?0.59)D.The second group had 110 eyes of 55 cases,which were accepted the LASIK and whose average diopter was(-5.97?0.83)D.Orbscan corneal topography system was used to follow up for 6 month postoperatively.Results In the sixth month after operation,we observed the posterior corneal power within 3mm of corneal center and the changes of the diff value between two groups.There were significantly statistical difference(P

ObjectiveTo investigate the clinical features of intramedullary spinal cord tumors(IMSCT) in children.MethodsThe clinical data including sex,age,pathohistology,clinical manifestations and medical check-up collected from 16 children diagnosed as IMSCT in Shengjing Hospital Affiliated to China Medical University,were retrospectively reviewed and analyzed.ResultsThe study subjects inclu-ded 11 male and 5 female,with an average age of(8.55?4.28) years old,ranged from 15 months to 14 years old.The interval lasted 1 day to 9 years from onset of the syndrome to confirmed diagnosis of IMSCT.The first clinical manifestation was mostly pain.The main clinical mani-festations included limb dyskinesia in 14 cases,pain in 12 cases,urine and stool disturbance in 9 cases,gait irregularity in 8 cases,extremity atrophy in 3 cases.Medical check-up included abnormal tendon reflex in 14 cases,abnormal superficial reflex in 9 cases,sphincter dilatation in 6 cases,positive Babinski's signs in 5 cases,spinal deformity in 4 cases,region masses in 3 cases,paraesthesia in 2 cases,inequality of lower limb in 1 case,dermai sinus in 1 case,pigmentation in 1 case.The cases were evaluated by magnetic resonance imaging,which presented thickened spinal cord and intramedullary abnormal signals in all the cases.Pathological types: teratoma in 5 cases,dermoid cysts in 2 cases,epidermoid cyst in 2 cases.Misdiagnoses included urinary tract infections in 2 cases,rheumatoid arthritis in 1 case,and lumbar disc protrusion in 1 case.ConclusionsThe main pathohistology of pediatric IMSCT is congenital tumor.First clinical manifestation is pain.MRI can show a reliable evidence for the diagnosis.It is important to improve the outcomes of pediatric IMSCT by establishing the diagnosis and administering proper management as early as possible.

Point-of-care testing technology has been widely used in clinical practice, especially in the emergency department of intensive care unit, operating room, and so on.Clinicians should correctly select patients, standardize specimen collection and strict operation according to the indications of different POCT items, and correctly interpret the results of POCT based on the clinical characteristics of children and other auxiliary examination results, so as to guide clinical diagnosis and treatment.From the perspective of pediatric emergency, this review analyzed the application of POCT technology in infection-related indicators, etiology, coagulation indicators, myocardial injury, and so on.

目的观察急性心肌梗死患者早期康复护理的远期效果。方法40例老年急性心肌梗死患者随机分为实验组20例(早期康复组)和对照组20例(常规治疗组),前者接受2周的康复护理,后者接受3周的康复护理。对两组患者进行为期18个月的随访,观察其心功能、活动情况,及心绞痛和再梗死的发生率。结果两组患者的心功能无明显差异,但实验组患者心绞痛的次数和再梗死的发生率低于对照组(P<0.05)。结论对急性心肌梗死患者进行早期康复是安全、可行的,可改善心功能和降低再梗死的发生率,减少并发症的发生。

To study the therapeutic effectiveness of “Gongxuening Capsule” in the treatment of prolonged lochia. The therapeutic effectiveness of “Gongxuening Capsule” was observed in the treatment of prolonged lochia to compare with the use of antibiotic combined with Yimucao electuary. Out of 42 cases treated, significant therapeutic effectiveness was observed in the treatment of prolonged lochia by using “Gongxuening Capsule”, with the total effective rate of 95 2%. The result was better than the group of patients in whom antibiotic combined with Yimucao electuary was used ( P

Objective The residency training questionnaires survey made at the hospital identified major residency training requirements.Methods Literature review and expert consultation were used in questionnaire design, to survey the residents of 2014 and 2015 and discover matters of their concern, and assess the policy outcomes.Results Matters of their concern were found to be professional strength, teaching and management level, and income respectively.Compared to residents of other hospitals, these residents regard the rationality of the merit pay and subsidies as higher(27.45％ vs.3.70％)in 2014.As to the new policies introduced in 2015, the gap between residents of the hospital and those from other hospitals in seeing the rationality of merit pay and subsidies tends to narrow.Conclusion The new policies have increased the residents' satisfaction on their income.

Objective To study the distribution of brain dopamine transporter (DAT) in children with autism by single photon emission computed tomography (SPECT). Methods Brain SPECT imaging was performed in 10 autistic children and 10 normal children, and DAT distribution in different functional areas of brain were calculated and compared by semi-quantitative evaluation of tracer uptake. Results There were no differences in tracer uptake between left and right striatum either in autistic children or in normal children (P=0.556, 0.563), while the tracer uptake level in autistic children was significantly higher than that in normal children (P=0.018). Conclusions The striatum dopaminergic neurons are hyperactive in children with autism. SPECT is helpful for the diagnosis of autism.

Objective To investigate blood pressure control the glucose metabolism,cardiovascular risk factors of patients who were regularly followed up at professional hypertension clinics in China.Methods A cross-sectional survey was conducted in 32 004 patients from 127 professional hypertension clinics across China.The questionnaires included case history and related treatment physical examination and laboratory biochemical tests were also taken at the same time.Results The mean blood pressure of overall population was (151 ± 13)/(92 ± 10) mm Hg(1 mm Hg =0.133 kPa).Totally 3424 patients (10.7％) had never taken any anti-hypertension medicine.Among patients treated with anti-hypertension drugs,19 818 were of mono-therapy (69.3％) and 8762 were of combination therapy.The most frequently used drug was reninangiotensin system inhibitor,followed by calcium-channel blocker.Fixed compound preparations accounted for 15.6％.The overall blood pressure control rate (＜ 140/90 mm Hg) was 26.8％,among them,27.7％,30.0％,25.4％ and 21.3％ patients were complicated with coronary heart disease,diabetes mellitus,kidney diseases and cerebral stroke respectively.About 70.3％ hypertensive patients had abnormal glucose metabolism whose mean glycosylated hemoglobin (GHbA1 c) was 7.84％,which was significantly higher than 7.0％,the target value defined by ADA.Even among them,20.2％ patients have never received any anti-diabetic drugs.Low-risk and medium-risk patients accounted for 16.0％.Totally 48.0％ patients were classified in high-risk group and 36.0％ in very high risk group.About half of all patients had different target organ dysfunction.About 49.0％ patients had associated comorbidities.Conclusions Co-existence of hypertension and abnormal glucose metabolism is common in Chinese population.Among these patients,target organ dysfunction and comorbidities are prevalent,but blood pressure is only effectively controlled in less than 30％ patients.Low proportion of combination therapy is one of the reasons for unsatisfied control of blood pressure.It indicates that effective management of hypertension is urgent.

Objective To compare the different effects of two rehabilitative therapies on cardiac rehabilitation of patients with acute myocardial infarction after interventional program.Methods Eighty AMI patients with no complications after interventional treatment were randomized equally into the observation group and the control group.The patients in the control group were given two-week cardiac rehabilitative training in line with the clinical nursing pathway.Besides the treatment in the control group,those in the observation group were given 10-day cardiac rehabilitative training by optimizing the nursing pathway.The two groups were compared in terms of left ventricular ejection fraction,self-care ability,heart function grading,incidence of complications,hospital stay and hospitalization cost.Results At discharge,The observation group was significantly better than the control group in terms of left ventricular ejection fraction,self-care ability and grading of cardiac function(all P<0.05).In regard to the incidence of complications,there was no statistically significant difference between the groups.Hospital stay in the observation group was obviously shorter than that in the control group and the hospitalization cost significantly less than that in the control group(P<0.01).Conclusion The 10-day cardiac rehabilitation program can promote patients’recovery,shorten the hospital stay and reduce the medical expense.