ObjectiveTo investigate the correlation factors of macular pucker after vitrectomy, and compare the surgical effect between secondary and idiopathic epiretinal macular membrane.MethodsA study of 26 consecutive patients (26 eyes), in which 18 were diagnosed as secondary epiretinal macular membranes and 8 as idiopathic epiretinal macular membranes, underwent par plana vitrectomy, vitreous cortex separation, and peeling off of the epiretinal macular membrane. The follow-up period was within 3~12 months. Preoperative and postoperative examination included visual acuity, fundus photography, and optical coherence tomography in some patients.ResultsAmong the 18 patients with secondary epiretinal macular membranes, 9 (50.0%) were related to vitreous surgery. There was statistical difference between cryoretinopexy to giant retinal tear and endolaser (?2=12.24,P

Objective To research the diagnostic value of serum procalcitonin (PCT)for sepsis and bacterial infection in children,and evaluate the value of severity and prognosis evaluation by dynamic monitoring for PCT levels in children with sepsis.Methods Prospective study.From July 2011 to April 2012,297 children in PICU were divided into sepsis group(n =125)and non-sepsis group(n =172).The sepsis group were divided into severe sepsis group and non-severe sepsis group,at same time,to be divided into bacterial sepsis group and non-bacterial sepsis group.The concentrations of serum PCT,C-reactive protein (CRP),WBC,neutrophil ratio in different time periods were obtained;the pediatric critical illness scores were conducted and sepsis related organ failure assessment were evaluated,the condition of prognosis was observed.Results The level of PCT in sepsis group and non-sepsis group were (21.31 ± 18.27)ng/ml,(4.35 ± 2.63)ng/ml,respectively.PCT of sepsis group was higher than that of non-sepsis group (t =4.744,P ＜ 0.01).The area under ROC curve of PCT,CRP and WBC in sepsis group were 0.737 (95 ％ confidence interval:0.633 ～ 0.840),0.704 (95 ％ confidence interval:0.610 ～ 0.799),0.666 (95 ％ confidence interval:0.554 ～0.778),respectively.When the level of PCT was 10 ng/ml,the diagnosis of severe sepsis had critical value,with sensitivity 80.2％ and specificity 82.6％.We found that PCT rapidly increased at the early infection by dynamically observing PCT,CRP and WBC of sepsis group.Furthermore,when the infection was controlled after using the antibiotic for 5 days,PCT also quiekly came down.However,CRP,WBC remained high level after controlling the infection and they declined slower than PCT.The PCT level of the children in the dead group was significantly higher than that in the survival group.PCT showed negative correlation with pediatric critical illness score (r =-0.621,P ＜ 0.05),and positive correlation with sepsis related organ failure assessment(r =0.755,P ＜ 0.01).Conclusion PCT has important value for diagnosing severe sepsis and bacterial sepsis.Dynamic PCT monitoring is valuable in severity classification and prognosis assessment for critically ill children with sepsis,and provide guides for clinicians to adjust the antibiotic use in time.

Objective To evaluate the mode of referral by response time for inter-hospital transfer of critically ill pediatric patients,and subsequently some measures taken for minimizing the response time in referral process.Methods A total of 9231 patients (≤14 years) transferred from primary hospital were included in a cross-section study.Information about age,sex,referral radius,the seasonal variation for inter-hospital transport of critically ill pediatric patients,time of referral telephone call and response time were collected.All computations were performed using the Statistic Package for Social Sciences for Windows version 18.0.Differences between groups were assessed by x2 tests or Wilcoxon test or Kruskal-Wallis for categorical data.Results Among all critically ill pediatric patients for the inter-hospital transfer,male to female ratio was 2.24:1,and the majority of patients were neonates and infants.Median retrieval mobilization time was 30 min (interquartile range,20-50 min).This study has demonstrated that referral time,age categories,referral radius,different years and seasons were associated with response time.Conclusions With the improvement of technologies and management mechanism,the response time was apparently minimized since the beginning of interhospital transportation.But there is still plenty of room for shortening rsponse time compared with advanced Westem countries.

Objective To analyze the clinical features and prognosis of hyperglycemia and the relationship between the blood glucose level and the severity of disease in critically ill children.Methods A total of 349 critically ill children admitted in Pediatric Intensive Care Unit (PICU) from November 2009 to April 2010 were restrospectively analyzed.According to the levels of venous blood glucose within 24 h after admission,they were divided into very high level group (blood glucose ≥11.1 mmol/L,n =67 ),slightly high level group (blood glucose 6.3-11.1 mmol/L,n =134) and normal level group (blood glucose ≤6.3mmol/L,n =148).Blood glucose levels were measured within 24 hours,3 days and 7 days after admission.Electrolytes,inflammatory markers,cardiac enzymes,liver and kidney function as well as other biomarkers related to the severity and the prognosis of the patients were recorded after admission.The categorical variables were analyzed with Chi -squared test,the continuous variables were analyzed with t-test,F-test,U-test andH-test,and the correlation analysis was calculated by using Pearson Coefficients. Results In the very high level group,slightly high level group and normal level group,the average blood glucose levels were 16.98 ±7.08 mmol/L,8.25 ± 1.40 mmol/L and 4.89 ± 0.98 mmol/L ( P ＜ 0.01 ),respectively;and the Pediatric Critical Ⅲ Scores at admission were 81.22 ± 8.25,86.71 ± 6.40 and 86.15 ± 6.99 ( P ＜0.01 ),respectively,and the incidences of sepsis or septic shock were 55.23％,30.59％ and 14.18％,respectively (P ＜0.01 ),and the incidences of MODS were 46.26％,22.39％ and 16.23％,respectively (P ＜0.01 ).The blood glucose levels of patients with one organ failure and two organ failure were 8.27 ± 3.75 mmol/L and 8.88 ± 5.42 mmol/L,respectively ( P ＜ 0.05 ).The blood glucose levels of patients with two organ failure and multiple organ failure were 8.88 ± 5.42 mmol/L and 13.09 ± 8.23 mmol/L,respectively (P＜0.01).The mortality rates of three groups were 47.76％,14.93％ and 10.13％ (P ＜0.01 ),and the blood glucose levels at admission in survival group and death group were 7.57 ±4.11 mmol/L and 12.46 ± 8.17 mmol/L ( P ＜ 0.01 ).Conclusions Patients with hyperglycemia are often found in the PICU.It not only partially reflects the severity of the disease,but also serves as an important indicator for the prognosis.The blood glucose level is positively correlated to the number of compromised organs and the severity of the disease.Dynamic monitoring of blood glucose may be essential for controlling the symptoms and prediction of prognosis.

Objective To study the value of Procalcitonin (PCT) in predicting the severity of the critically ill children by analyzing the clinical data of increased PCT level.Methods A total of 392 patients with increased PCT admitted to the PICU of Hunan Children's Hospital from August 2011 to April 2012 were enrolled.The data of clinical manifestations,medical condition,sputum culture,organ function and prognosis were summarized and analyzed statistically.The continuous variables were analyzed with t-test,the categorical variables were analyzed with Chi-squared test,and the correlation analysis was calculated using Pearson coefficients.Results Serum PCT had a positive correlation with inflammatory markers such as C-reactive protein (CRP),white blood cell (WBC) count and the percentage of neutrophils (NEU％) (P ＜ 0.01).PCT was significantly higher when sputum culture was positive (P ＜0.05) but there were no obvious changes in CRP,WBC and NEUT％ (P ＞ 0.05).Serum PCT increased obviously in the presence of organ dysfunction.The higher serum PCT,the more likely multiple organ failure would happen.The PCT level upon admission in death group (63 cases) was (62.43 ± 70.19) ng/ml,which was higher than that in survival group (P ＜ 0.01).Conclusions PCT level is helpful in assessment of severity and prognosis of bacterial infection in critically ill children,and can reflect the organ dysfunction objectively.It can improve the survival rate and the life quality in critically ill children.

Objective To investigate the clinical features,treatment,prognosis,and occurrence of neurogenic pulmonary edema(NPE) in children with severe hand-foot-mouth disease (HFMD) complicated with brain stem encephalitis and abnormal cranial magnetic resonance imaging (MRI).Methods 386 cases of severe HFMD were hospitalized in our Intensive Care Unit (ICU) from May to October 2010,of which 24 cases had abnormal cranial MRI.Their clinical symptoms,MRI features,treatment,and prognosis were analyzed.Results The clinical symptoms of severe HFMD with brainstem encephalitis included fever,startle,lethargy,vomiting,difficulty swallowing,drooling,and so on.The patients with abnormal cranial MRI were prone to have a neurogenic pulmonary edema (NPE) (5％ vs 6.5％,x2 =34.55,P ＜0.01).Conclusions The nervous system-affected parts of severe HFMD is the brain stem,thalamus,and spinal cord.Brain stem inflammation can be found early by the cranial MRI to be highly vigilant of NPE.During course of 1 ～ 5 day,special attention should be paid to the symptoms of the nervous system.The early detection,timely intervention,and prevention from NPE would result in the good prognosis.

Objective To discuss the clinical value of procalcitonin (PCT) in guiding antibiotics use in children with severe diseases. Methods The clinical data of patients admitted to intensive care unit from January 2012 to July 2012 were retrospectively analyzed. The patients without antibiotics use before admission and with procalcitonin level less than 0.5 ng/ml on admission were selected. The body temperature, infection indicators and prognosis were compared between patients with and without antibiotics use during hospitalization. Results There was no difference in body temperature, PCT, C-reactive pro-tein (CRP), erythrocyte sedimentation rate (ESR) and white blood cell count (WBC) on admission between patients with and without antibiotics use during hospitalization. The PCT level was increased signiifcantly (P<0.05) on the day of starting the an-tibiotics when compared with that on admission in 60 patients while there was no change in the levels of WBC and CRP. Com-pared with the day of starting the antibiotics, body temperature declined (P<0.05) and PCT level in 56 patients reexamined was decreased (P<0.05) at 3 days after antibiotics use. Two hundred and eleven patients (98.14%) had favorable prognosis. Conclu-sions Monitoring PCT can guiding the clinical use of antibiotics.

Objective To investigate the diagnosis and treatment of vertigo associated with changes of head position.Methods 112 patients of vertigo associated with changes of head position were analyzed from June 2006 to December 2007 through the positional tests and imaging examination.Results 45 men and 67 women from ages 12 to 75 (median 50) were included with a total of 112 patients.88 patients were diagnosed as benign paroxysmal positional vertigo(BPPV),76 patients as posterior semicircular canals BPPV,9 patients as horizontal semicircular canal BPPV,3 patients as anterior semicircular canals BPPV,9 patients as suspicious BPPV.They were treated by canalith repositioning procedure,the total improvement rate was 96.9% after 1 week.15 cases of cervical vertigo were treated by physical therapy and medication,the vertigo of 4 patients disappeared and of 11 patients was improved significantly after 2 weeks.Conclusion The positional tests and cervical plain x-ray are the simplest ways to diagnose vertigo associated with changes of head position.Physical therapy and medication are effective.It is suitable to promote in the grass-roots hospitals.

Objective To analyze the clinical features of the hyperamylasemia in critically ill children and investigate the related risk factors in order to provide the basis for prevention and treatment. Methods A total of 1036 critically ill children admitted in pediatric intensive care unit (PICU)from April,2011 to Oct,2012 were studied.They were divided into the high amylase group (n=82)and the normal group (n=954).According to the outcomes,the high amylase group was divided into survival group (n=61 ) and death group (n =21 ).The related risk factors of the occurrence and outcome of hyperamylasemia were analyzed by univariate and multivariate Logistic regression.Results There were statistically significant differences in rates of coagulation disorders, convulsions, disturbance of consciousness,pediatric critical illness score (PCIS)≤80,multiple organ dysfunction (MODS)≥3, sepsis,shock,and lactic acid (LA),procalcitonin (PCT),blood glucose (BG)between the high amylase group and the normal group (P<0.05 ).The differences in the rates of coagulation disorders,convulsions, mechanical ventilation,PCIS≤80,MODS≥3,and LA,PCT,oxygenation index,albumin,C-peptide,BG were statistically significant between the survival group and the death group (P <0.05 ).Multivariate Logistic regression analysis showed that the risk factors of the hyperamylasemia's occurrence were LA,PCT, BG,PCIS<80,MODS>3.Adjusted ORs confidence intervals of them were 1.662 (1.236-2.234),1.042 (1.025-1.060),1.612 (1.411-1.843),3.219 (1.311-7.905),3.411 (1.370-8.494),respectively. The hyperamylasemia's prognostic risk factors were PCT,C-peptide,PCIS ≤80,MODS >3,shock. Adjusted ORs confidence intervals of them were 1.066(1.021-1.113),1.437(1.017 ~2.030),16.137 (1.876-138.836),10.437(1.528-71.925),20.928(1.938-226.009),respectively.Conclusions The severity of the disease,the levels of LA,PCT,BG in critically ill children were positively correlated to the occurrence of hyperamylasemia.The severity of the disease,the incidence of organ failures,the levels of PCT,C-peptide combined shock in children with hyperamylasemia were positively correlated to the prognosis of hyperamylasemia.

Objective To investigate the adrenal histopathology damage in critically ill non-survival children,and the incidence of adrenal damage,and to explore the risk factors for the adrenal hemorrhage and necrosis in critically ill children.Methods A total of 141 critically ill non-survival children was admitted in this study in Hunan Children's Hospital from January 1,2005 to December 30,2012.Clinical data in children were systematically collected,including age,sex,sodium,potassium,blood gas analysis,liver and kidney function,blood clotting function,etiology,treatment and pediatric clinical illness score (PCIS) or neonatal critical illness score (NCIS),and pathological data.All data were analyzed by SPSS 18.0.Results Logistic regression analysis showed the factors of adrenal hemorrhage and necrosis of critically ill non-survival children were sepsis,PCIS score ＜ 80 critically ill children are risk factors for adrenal hemorrhage necrosis (P ＜ 0.05),ORwas 3.659 (95％ CI:1.344-9.965),and 2.325 (95％ CI:1.028 -5.258).Intravenous corticosteroids were protective factors for critically ill non-survival children with adrenal hemorrhage necrosis (P ＜ 0.05),and ORwas 0.377 (95％ CI:0.163-0.875).Conclusions There were two significant risk factors of adrenal hemorrhage and necrosis:sepsis and critical illness score less than 80 points.Intravenous corticosteroid is a protective factor in critically ill children.