Objective To study the clinical characteristics,treatment and prognosis of neonatal intestinal muscle defect with perforation.Methods The clinical data of 8 cases of newborns who had intestinal muscle defect with perforation in Department of Surgical Intensive Care Unit,Nanjing Children's Hospital Affiliated to Nanjing Medical University,were analyzed retrospectively.Results These 8 cases included 1 premature infant,1 term low birth weight infant,6 cases of term infants with normal birth weight,and all had no history of perinatal asphyxia.The ages of onset of all cases were ＜ 7 d.Clinical manifestations were crying and sudden onset of obvious abdominal distention.Bile or fecal vomiting occurred in 5 cases.These patients included 5 cases with congenital anorectal malformations,of which 3 cases had low deformity,1 case with middle deformity and 1 case with high deformity,with no other complications of gastrointestinal malformation.Surgical treatment was used in 8 cases,in which 7 cases of rectal perforation and 1 case of ileal perforation were confirmed.All cases were isolated perforation with a diameter of about 0.8-2.0 cm.The perforated periphery of the intestine was membranous.Intestinal repair was performed after total removal of the diseased tissue,and the patients with rectal perforation were performed at the same time for the proximal colostomy.The histopathologic examinations showed that the periphery of perforation had intact mucosa,muscularis propria was absent,myenteric plexus was absent in the region of muscle loss.Two cases were discharged within 1 d after colostomy.Except for 1 case with high anorectal malformation in the control of poor defecation functions,there were no other postoperative gastrointestinal complications in these 6 cases.Conclusions Rectal perforation is the most common in neonatal intestinal muscle defects,and it is an isolated and large diameter perforation.Most cases are term infants with normal birth weight.These patients are often associated with congenital anorectal malformations.High,middle and low deformity can be accompanied by intestinal muscle defect.Surgical excision of diseased tissue should be complete,in principle,and intestinal stoma should be performed proximal to the perforation.In case of congenital anorectal malformations complicated with gastrointestinal perforation,the rectum should be explored as an important region.Neonatal intestinal muscle defect maybe a primary lesion according to clinical characteristics of early sudden onset after birth and pathological examinations.Except for complications caused by associated malformations,the prognosis is satisfactory.

As nanomedicines are developing fast in both academic and market areas, building up suitable methods for nanomedicine analysis with proper techniques is an important subject, requiring further research. The techniques, which could be employed for grain size analysis of nanomedicines, were reviewed. Several key techniques were discussed with their principles, scope of applications, advantages and defects. Their applications to nanomedine analysis were discussed according to the properties of different nanomedicines, with the purpose of providing some suggestions for the control and administration of nanomedicines.

Objective To summarize the clinical characteristics,diagnosis and management methods and prognosis of hepatorrhagia and splenorrhagia of newborns.Methods A retrospective review of clinical data of neonates with hepatorrhagia and splenorrhagia in perinatal period was performed from June 1,1992 to June 1,2009 in Nanjing Children's Hospital.Results There were twenty-three neonates suffered from hepatorrhagia and splenorrhagia in the perinatal period.There were 12 macrosomias and 6 preterm newborns.Abnormal birth history (65.2%,15/23),including caesarean section,fetal distress,application of vacuum extractor,prolonged labour and precipitate labor,were most commom reasons of hepatorrhagia and splenorrhagia,and birth injuries [47.8% (11/23)]was subsequent.In all cases,14 cases were hepatorrhagia,six were splenorrhagia,three were hepatorrhagia and splenorrhagia simultaneously.Primary early symtoms included low response,sleepiness (91.3%,21/23);jaundice 78.3% (18/23);pallor and anemia 73.9% (17/23);abdominal distension (65.2%,15/23) and so on.Ultrasonography and computed tomography may make a definite diagnosis.Fifteen newborns underwent non-operative treatment and 8 received hemostatic laparotomy.The general mortality was 13.0%(3/23).Conclusions Hepatorrhagia and splenorrhagia of neonates in perinatal period is associated with macrosomias,abnormal birth history and preterm birth,and birth injuries were the major etiological factors.Clinical presentations are nonspecific which maybe asociated with the degree of blood loss.Abdominal ultrasonography is an optimal diagnostic method.Nonoperative management may be successful in hemodynamically stable patients,while immediate intervention,such as laparotomy,is required to control persist bleeding.

Objective To describe the association between age and the sex-based outcome difference and analyze the potential mechanism responsible for sex-based outcome difference in severe trauma patients.Methods A retrospective analysis derived from the Emergency Intensive Care Unit of the acute trauma center of the Shanghai Municipal Sixth People's Hospital during the 2010-2013 period was performed to identify sex-based outcome differences after severe blunt trauma.The study cohort of patients was then stratified by age:(1) 18 years ≤ age ＜45 years,(2) 45 years ≤ age ≤ 55 years,and (3) age ＞55 years.Crude and adjusted odds ratios (ORs) were calculated to evaluate the association between gender and the hospitalized mortality,both overall and subgroups according to age categories.Results A total of 987 severe trauma patients met our inclusion criteria were enrolled in this study.Crude mortality was higher in male severe trauma patients (male 9.1％ vs.female 5.0％,P ＜ 0.05).Multiple logistic regression revealed that females had a 79％ decrease in hospitalized mortality compared with males (OR =0.21,95％ CI:0.07-0.64,P =0.006).This difference was most distinct in patients with age ＜ 45 years,(OR =0.15,95％ CI:0.04-0.67,P =0.012).There is no significant difference between genders in mortality of trauma patients with 45 years ≤ age ≤ 55 years and age ＞ 55 years.Conclusions The present study revealed a statistical significant association between gender and mortality among severe blunt trauma patients,particularly in patients with age ＜ 45 years.These results may highlight the importance of sex hormones in outcomes of severe trauma.

Objective To investigate the different expressions of pathological tissue and serum microRNAs (miRNAs)in Hirschsprung disease(HSCR). Methods Pathological colon tissues and serum samples were obtained from 52 confirmed HSCR cases respectively by surgery and pathology and from 52 matched controls,respectively. An initial screening of the tissues and serum microRNA expression were performed through TaqMan Low Density Array. The candidate tissue and serum miRNAs were validated by quantitative real - time - PCR in the 20 paired array samples and extra 32 paired samples after the integration of the screening result. The bioinformatical software online including miR-base,Target Scan,PicTar and MiRanda were used to predict the target mRNA of the consistent microRNAs in the tis-sues and the serum. Results Compared with the controls,47 microRNAs were differently expressed in HSCR tissues, including 17 up - regulated miRNAs and 30 down - regulated miRNAs;32 upregulated miRNAs were also detected to be differently expressed in the HSCR serum. Among these microRNAs,miR - 218 - 1 and miR - 885 - 5p were identi-fied to have a consistent significant different expression in both tissues and the serum,which were validated as high -expressed in microarray samples and expanded 32 paired samples(miR - 218 - 1:tissue array 0. 017 58 ± 0. 002 29 vs 0. 003 37 ± 0. 000 50,P ﹤ 0. 001;tissue expanded expression 0. 013 53 ± 0. 001 74 vs 0. 004 43 ± 0. 000 60,P ﹤0. 001. miR - 885 - 5p:tissue array 0. 000 30 ± 0. 000 11 vs 0. 000 04 ± 0. 0000 08,P = 0. 027 6;tissue expanded ex-pression 0. 004 59 ± 0. 000 16 vs 0. 000 04 ± 0. 000 01,P = 0. 014 5. miR - 218 - 1:serum array 0. 769 60 ± 0. 285 50 vs 0. 045 14 ± 0. 015 07,P = 0. 015 5;serum expanded expression 1. 151 00 ± 0. 430 00 vs 0. 023 07 ± 0. 003 81,P =0. 008 7. miR -885 -5p:serum array 1. 595 00 ±0. 441 70 vs 0. 169 40 ±0. 034 46,P =0. 001 2;serum expanded expres-sion 1. 689 00 ±0. 453 00 vs 0. 146 10 ± 0. 031 24,P = 0. 001 2). Specifically,the target genes of these 2 microRNAs were RET,PLAG1 and NeuroD1,which had been reported to be directly related to HSCR. Conclusions Significantly dif-ferential expressed miRNAs exist in the pathological tissue and the serum of HSCR. MiR - 218 - 1 and miR - 885 - 5p, which showing consistent differential expression,may be involved in the pathogenesis of HSCR.

Objective To investigate the diagnosis,surgical therapy of congenital pyloric atresia in neonates.Method Six congenital pyloric atresia neonates in Children's Hospital of Nanjing Medical University were admitted,including 4 cases of complete atresia with pyloric diaphragm,1 case of incomplete atrsia with a foraminula in the pyloric diaphragm and 1 case of pyloric atresia with solid segment.Three cases were associated with epidermolysis bullosa,multiple intestinal atresia and annular pancreas respectively.Results The main presenting symptoms were nonbilious vomiting,and 5 cases of abdominal X-ray plain film showed a large single gastric air-bubble and no gas distally.Ultrasonography and upper gastrointestinal radiography showed complete gastric outlet obstruction,and in 1 case postbulbar obstruction.Neonates with pyloric diaphragm underwent diaphragm excision and pyloroplasty,and that with solid segment did an extended pyloroplasty.The one complicating intestinal atresia was abandened surgery.Five cases were followed up,and doing well with complete recovery.Conclusion Abdominal X-ray plain film,Doppler ultrasonography and upper gastrointestinal radiography help establish the diagnosis of neonatal congenital pyloric atresia.Surgery is the therapy of choice and the prognosis is very good.

OBJECTIVETo evaluate the safety and efficacy of fast track surgery (FTS) combined with laparoscopy in the treatment of infant Hirschsprung disease.

METHODSClinical data of 72 infants with Hirschsprung disease undergoing elective pull-through surgery from June 2010 to June 2013 were retrospectively summarized. The patients were divided into two groups: fast track surgery combined with laparoscopy group (FTS group, n=33) and laparoscopic surgery with traditional management perioperatively (control group, n=39). Postoperative intestinal function recovery, hospital stay, cost of hospitalization, complications were compared and postoperative recovery was followed-up for four weeks.

RESULTSThere were no significant differences in intraoperative blood loss and operative time between FTS and control group (both P>0.05). The recovery of bowel movement was earlier in the FTS group but the difference was not statistically significant (P=0.078). The hospital stay was shorter [(10 ± 2) d vs. (14 ± 4) d] and cost of hospitalization was lower [(15 316 ± 2273) Yuan vs. (18 641 ± 3082) Yuan] in FTS group than those in control group(P<0.01). Postoperative complications and recovery conditions during 4 weeks follow-up were similar between the two groups.

CONCLUSIONFast track surgery combined with laparoscopy in the treatment of infant Hirschsprung disease is safe and effective.

Female ; Hirschsprung Disease ; surgery ; Humans ; Infant ; Laparoscopy ; Male ; Retrospective Studies ; Treatment Outcome

OBJECTIVETo evaluate the efficacy of bowel plication combined with early enteral nutrition (EEN) in the enhanced recovery after surgery(ERAS) of jejunal atresia (JA) neonates.

METHODSBetween January 2005 and January 2014, 58 neonates with JA underwent surgical treatment in Children's Hospital of Nanjing Medical University. Their clinical data, including operation procedures, ages, birth weight, concomitant diseases, age at surgery, hospital stay, total parenteral nutrition (TPN), postoperative intestinal function recovery (the time to the first oral feeding and the time to oral feeding volume reaching 150 ml·kg·d), complications and reoperation, were retrospectively analyzed.

RESULTSAccording to the surgical procedures, the 58 neonates were divided into three groups: control group(18 cases, undergoing atretic segments resection and primary anastomosis), bowel plication group(19 cases, undergoing bowel plication after atretic segments resection and primary anastomosis) and bowel plication combined with EEN group (21 cases, undergoing bowel plication combined with EEN). No significant differences of ages, birth weight, age at operation, and concomitant diseases were found among 3 groups (all P>0.05). The time of hospital stay, the time to the first oral feeding, the time to oral feeding volume reaching 150 ml·kg·d, and the time of TPN in bowel plication group were significantly shorter than those of control group [(19.3±4.4) d vs. (22.7±3.1) d, t=2.696, P=0.011; (9.8±3.3) d vs. (12.5±3.0) d, t=2.630, P=0.013; (18.5±4.1) d vs. (21.5±2.5) d, t=2.726, P=0.011; (13.1±2.9) d vs. (15.0±2.3) d, t=2.219, P=0.033]. However, above parameters of bowel plication combined with EEN group were significantly shorter than those of bowel plication group [(15.3±3.5) d vs. (19.3±4.4), t=4.120, P=0.003; (7.7±2.2) d vs. (9.8±3.3) d, t=2.428, P=0.020; (14.8±2.5) d vs. (18.5±4.1) d, t=3.752, P=0.001; (9.5±3.0) vs. (13.1±2.9) d, t=4.370, P=0.000].

CONCLUSIONThe bowel plication combined with EEN contributes to the early use of intestinal function, shorten the time to the first oral feeding, and reduces the use of TPN, which can improve the recovery of jejunal atresia neonates.

Anastomosis, Surgical ; Comparative Effectiveness Research ; Defecation ; Digestive System Surgical Procedures ; methods ; Enteral Nutrition ; methods ; Humans ; Infant, Newborn ; Intestinal Atresia ; rehabilitation ; surgery ; Jejunum ; abnormalities ; surgery ; Length of Stay ; Parenteral Nutrition, Total ; Postoperative Period ; Retrospective Studies