The functional sequelae of sacrococcygeal teratoma: a longitudinal and cross-sectional follow-up study

Aim

The purpose of the study was to determine clinical manifestations, prevalence, and natural history of functional sequelae in patients operated on for sacrococcygeal teratoma (SCT) during infancy.

Methods

The medical records of 18 infants operated on for SCT were reviewed. Data recorded during admission and during routine outpatient appointments were analyzed. Moreover, 13 surviving patients (mean age, 25 years) and 65 age- and sex-matched controls were evaluated at a special outpatient clinic.

Results

Seven adult patients and 25 controls presented with one or more functional disorders including abdominal pain, constipation, diarrhea, soiling, enuresis, urinary frequency, urinary stress incontinence, and urinary straining. In 7 of 8 symptomatic children, one or more functional disorders disappeared during adult life. In comparison with controls, adult patients had a nonsignificant higher prevalence of each individual dysfunction.

Conclusions

Sequelae of SCT tend to improve with time, and the disorders reported are relatively common complaints in the general population.     

Functional outcome after operation for Hirschsprung disease—transanal vs transabdominal approach

Background

It has been hypothesized that the extensive transanal dissection in transanal endorectal pull-through (TEPT) for Hirschsprung disease (HD) can impair the anal sphincters in neonates and thereby cause incontinence. Theoretically, transabdominal endorectal pull-through might have less impact on the sphincters. The aim of this study was to compare functional outcome in HD patients operated with either TEPT or laparotomy-assisted endorectal pull-through (LEPT) with particular focus on soiling and fecal incontinence.

Patients and Methods

Anorectal function in 52 children older than 3 years is reported. The patients were operated for HD with either TEPT (n = 28) or LEPT (n = 24) and followed prospectively. Functional outcome was recorded by standardized interviews. The Krickenbeck criteria were used to classify voluntary bowel movements, soiling, and constipation.

Results

The median age at follow-up was 5.7 years (3.1-13.2) for TEPT and 10.1 years (7.7-16.2) for LEPT. Twenty-nine patients reported soiling at final follow-up. There was no difference in the rate of soiling between children operated with TEPT (54%) or LEPT (58%). Constipation was reported in 11 children (TEPT, 25%; LEPT, 17%).

Conclusions

The functional outcome and in particular the rate of soiling did not differ between patients operated with LEPT or TEPT.     

Long-term clinical outcome in patients with total colonic aganglionosis: a 31-year review

Background

The purpose of this study is to review the long-term clinical outcome in patients surgically treated for total colonic aganglionosis (TCA).

Methods

The hospital records of 58 patients with TCA from 2 centers were retrospectively analyzed. These patients were then followed up by personal or telephonic interviews using a standardized questionnaire.

Results

Of the 58 patients, 36 were male and 22 were female. Thirty-eight patients presented in the neonatal period. A total of 13 (22.4%) presented with enterocolitis, 43 (74.1%) with intestinal obstruction, and 2 (3.5%) with severe constipation. All patients had disease involving the entire colon up to at least the terminal ileum. Two patients had total intestinal aganglionosis and died after ileostomy. Various pull-through procedures performed in 56 patients included Soave in 16, Swenson in 5, and Duhamel in 35 patients.Postoperatively, 31 (55.4%) patients had enterocolitis. At long-term follow-up (2-31 years), 3 patients had opted for permanent ileostomies because of intractable incontinenece or recurrent enterocolitis. Eleven patients were too young to assess bowel function or unavailable for follow-up. Of the remaining 42 patients, 22 had normal bowel control and 20 were soiling. At 5 years, patients had an average of 5.2 bowel movements per day, which reduced to a mean of 3.4 per day at the age of 15 years.

Conclusion

Patients with TCA continue to have long-term problems with bowel control, although many improve with time.     

Prenatal and postnatal urologic complications of sacrococcygeal teratomas

Purpose

Urologic complications are an underappreciated sequelae of the mass effect of sacrococcygeal teratoma (SCT) and its resection. The goal of this study was to evaluate the incidence and severity of urologic complications in patients with SCT.

Methods

A retrospective review of patients with a prenatal diagnosis of SCT and postnatal referral for SCT at a single institution during a 5-year period (2004-2009) was performed. The presence of prenatal and postnatal urologic abnormalities were collected and analyzed.

Results

Thirty patients were identified for inclusion in the study. Twenty-two patients were diagnosed prenatally, 3 patients were referred for resection of the tumor, and 5 patients were initially treated elsewhere and referred after resection for urologic complications. Of the 20 patients with subsequent follow-up included in this study, 9 had neurogenic bladder, 5 of whom also had associated renal injury. All patients with renal injury had a higher grade Altman type II/III lesion.

Conclusion

Urologic problems appear to be common in patients with SCT. Higher grade SCTs should alert the surgeon to possible urologic sequelae, particularly neurogenic bladder and renal injury. Careful urologic evaluation and management of the genitourinary tract should be included in prenatal and preoperative counseling.     

Results of a mechanical Duhamel pull-through for the treatment of Hirschsprung's disease and intestinal neuronal dysplasia

Background/purpose

The authors analyzed the results of a modified entirely mechanical Duhamel pull-through for the treatment of Hirschsprung’ disease or type B intestinal neuronal dysplasia. The aim of the follow-up was to evaluate results of a Duhamel procedure entirely performed with the use of staplers.

Methods

Fifty-six patients were followed up to detect complications and outcome. Patients were evaluated clinically, and, when symptoms were present, a suction biopsy with histochemical analysis, an x-ray contrast enema, or an endoscopy was performed.

Results

Early complications developed in 4 cases (7%) including a case of leakage (1.8%). No patient experienced recurrence. During a mean follow-up of 49 months, further complications occurred in 16 other patients: 4 adhesive obstructions requiring surgery, 3 strictures, 5 chronic bleeding, 4 fecaloma formation, 2 urinary problems, and 13 postoperative enterocolitis.Four patients (7%) had more than 3 passages of liquid stools per day, and 3 of them who had an ileal pull-through had constant soiling. Thirty-seven children (68.5%) had 1 to 2 bowel movements per day and were continent. Seven (13%) had less than 3 bowel movements per week. Three children who underwent total colectomy were incontinent (5.5%). Three more children (5.5%) have not yet reached the age for continence. Forty-nine parents (87%) judged the outcome satisfactory.

Conclusions

Follow-up of mechanical Duhamel pull-through showed an acceptable long-term outcome. An increased risk of incontinence is present in case of ileal pull-through, whereas constipation is more frequent after partial colon resection, regardless of the type of intestinal neuronal malformation.     

Colonic motility and functional assessment of the patients with anorectal malformations according to Krickenbeck consensus

Background/Purpose

In this study, the patients operated on for anorectal malformations (ARM) were evaluated in terms of segmental (SCTT) and total colonic transit times (TCTT) and clinical status according to Krickenbeck consensus before and after treatments.

Methods

Forty-one patients with ARM (28 males/13 females) older than 3 years (median age, 7.7 years; range, 3-25) who had no therapy before were assessed for voluntary bowel movements (VBM), soiling (from 1 to 3), and constipation (from 1 to 3), retrospectively. Distribution of the patients were rectourethral fistula (17), perineal fistula (PF; 8), vestibular fistula (VF; 8), cloaca (3), rectovesical fistula (1), rectovaginal fistula (1), pouch colon with colovestibular fistula (1), no fistula (1), and unknown (1). The patients ingested daily 20 radiopaque markers for 3 days, followed by a single abdominal x-ray on days 4 and 7 if needed. The results were compared with the reference values in the literature.

Results

Mean follow-up period was 36 months (range, 1-108.5 months). All patients but 1 had soiling in different degrees. Twenty-one patients who had VBM were divided into group 1, with constipation (n = 9), and group 2, without constipation (n = 12). The other 19 patients who had no VBM were divided into group 3, with constipation (n = 14), and group 4, without constipation (n = 5). The longest TCTT and rectosigmoid SCTT were found in group 3 (69.5 and 35.2 hours, respectively). Group 1 had long SCTT in rectosigmoid but normal TCTT (27.8 and 47.4 hours, respectively). Groups 2 and 4 had normal SCTT and TCTT, and there was no significant difference between them. After the appropriate treatment, of the patients, 45% (18/40) had no soiling, and the soiling score decreased to grade 1 in 27.5% (11/40) and to grade 2 in 10% (4/40). Four had unchanged soiling score, and 3 were excluded from the study because of follow-up problems. Half of the patients in group 3 (4 VF, 2 rectourethral fistula, PF) gained VBM without soiling after laxative treatment. Only four of 23 patients had decreased constipation score (2 cloaca, PF, VF).

Conclusions

In this study, ARM patients complaining of constipation with or without VBM had prolonged SCTT in the rectosigmoid region. Percentage of the improvement in soiling scores was more conspicuous than that of constipation scores. The dismal figure observed at the first examination in the assessment of VBM was not associated with an unfavorable improvement with laxative treatment. So, it is suggested that assessment of VBM initially may be deceptive for clinical status.     

Dynamic magnetic resonance imaging of the pelvic floor in children and adolescents with vesical and anorectal malformations

Background

Magnetic resonance imaging (MRI) of the pelvic floor allows better assessment of pelvic pathology and has a potential as an adjunct for therapy planning. In complex congenital malformations of the pelvic floor and continence organs, it plays a major role in assessing urinary and fecal incontinence or constipation, especially when performed as a dynamic investigation such as MRI defecography.

Patients and Methods

Twenty-three patients (3-21 years old) with urinary and/or fecal incontinence or constipation attributable to congenital malformations of the pelvic region presented at our institution. The diagnoses were anorectal malformations (18), bladder exstrophy (2), and cloacal exstrophy (3). All patients underwent static and dynamic MRI of the pelvic floor with rest, squeeze, and evacuation in supine position.

Results

Morphology and function of the pelvic floor and pelvic organs could be demonstrated in each case. The reason for urinary incontinence, fecal incontinence, or constipation could be defined, and an individual therapeutic management concept was made based upon the data obtained by the investigation.

Conclusions

The advantages of this method, in comparison to others, are direct visualization of the pelvic floor muscles and continence organs and their anatomical relationship during different functional actions. Pelvic floor dysfunction is often the reason for fecal and urinary incontinence and can be detected by MRI. Especially in children, minimizing radiation exposure is of major concern. Disadvantages are the costs and long investigation time.     

Prophylactic glycopyrrolate prevents bradycardia after spinal anesthesia for Cesarean section: a randomized, double-blinded, placebo-controlled prospective trial with heart rate variability correlation

Study Objective

To determine if prophylactic glycopyrrolate prevents bradycardia after spinal anesthesia.

Design

Prospective, randomized, double-blinded, placebo-controlled study.

Setting

Large university-affiliated community hospital.

Patients

81 consecutive term parturients (not in active labor) who were scheduled for elective Cesarean section.

Interventions

Parturients received 1.0 to 1.5 L of intravenous Ringer's lactate and either glycopyrrolate 0.4 mg or an equal volume of saline, with caregivers blinded to the immediate sequelae of study drug. Each patient received intrathecal bupivacaine (12 to 14 mg) with morphine sulfate (0.1 to 0.2 mg).

Measurements

Continuous heart rate (HR) and blood pressure monitoring occurred for 20 minutes, with the minimum HR recorded for each 5-minute epoch. Heart rates < 60 beats per minute defined bradycardia. Heart rate variability (HRV) analysis occurred offline.

Main Results

None of 34 patients administered glycopyrrolate and 6 of 35 (17%) patients receiving saline experienced bradycardia (P = 0.02476). Time domain, frequency domain, and nonlinear and embedded spectrum entropy analyses all reflected the decrease in HRV accompanying administration of glycopyrrolate.

Conclusion

Bradycardia after spinal anesthesia occurs commonly. Prophylactic glycopyrrolate may prevent the bradycardia, but not necessarily the hypotension.     

Aberrations of the intrinsic innervation of the anorectum in fetal rats with anorectal malformations

Background

Fecal accumulation, constipation, soiling, and incontinence are common sequelae after repair of anorectal malformations (ARMs) in children. It is believed that besides the abnormalities of sacral roots, certain inherent abnormalities of the myenteric plexuses may play an important role in the final outcome after definitive repair.

Methods

This study was conducted to investigate the distribution of neuron-specific enolase (NSE), vasoactive intestinal peptide (VIP), and substance P (SP)-100 neurotransmitters in the rectosigmoid and fistulous tract of the ethylenethiourea-treated rat with ARMs.

Results

ARMs were induced by administering 1% ethylenethiourea (125 mg/kg) on gestational day 10, and the litter was harvested on gestational day 21 by cesarean section. Forty-eight controls and 63 with ARMs (46 high-type and 17 low-type) were recovered. Whole-mount preparations of each rectosigmoid and fistulous communication between the rectum and genitourinary tract were stained with fluorescent antibodies against NSE, VIP, and SP-100. The tissues were counterstained with Eriochrome black-T and methyl green dyes to improve the visualization of the myenteric plexuses.

Conclusions

The immunoreactivity of NSE, VIP, and SP-100 was markedly reduced in the rectum and fistulous tract of high-type ARMs and slightly reduced in low-type ARMs compared with controls. Intramural nerves stained by VIP and SP-100 antisera were decreased in both types of ARM, indicating that both inhibitory and excitatory motor neural elements were affected, and this may explain the distal colonic dysmotility seen postoperatively in both high and low ARMs.     

Radionuclear transit to assess sites of delay in large bowel transit in children with chronic idiopathic constipation

Purpose

Chronic idiopathic constipation (CIC) with soiling in children may result from slow colonic transit (SCT) or anorectal dysfunction and/or psychological problems known as functional fecal retention (FFR). Evidence is accumulating that SCT and FFR need different treatments, but they are poorly distinguished by solid marker studies. The authors used radionuclear transit scintigraphy to categorize children with CIC as having either FFR or SCT.

Methods

Children (N = 101) with CIC (and soiling) who were referred for further investigation after failure of standard treatments (diet, laxatives) received radiolabeled colloid orally, and scintillation images were collected at 0 to 2, 6, 24, 30 and 48 hours (total radiation dosage = 2 standard x-rays). Radioactivity in 6 regions (precolonic, ascending, transverse, descending, rectosigmoid, and evacuated feces) was measured, and the median position (geometric center) of radioactivity at each time was determined.

Results

In children, meals normally reach the cecum at 6 hours and are evacuated in 30 to 58 hours. Fifty patients had retention of radioactivity in the proximal colon at 48 hours, indicating SCT. Analysis of the images and the geometric center showed that passage through the ascending colon and transverse colon was delayed in SCT. In 24 patients, radioactivity was passed by 30 hours, indicating normal transit or possible FFR. Twenty-two patients had retention in the rectum, indicating definite FFR. Five studies were borderline.

Conclusions

Radionuclear transit scintigraphy is useful for categorizing patients with CIC as having either FFR or SCT, allowing for different treatments. Radionuclear transit scintigraphy provides more detail and greater sensitivity than solid marker studies in diagnosing CIC. Radionuclear transit scintigraphy showed that half of our patients had SCT.     

Social quality of life for adult patients with anorectal malformations

Background/Purpose

Pediatric surgeons who performed the initial surgery on anorectal malformations (ARM) lose contact with the patients as they become adults. In the present study, we examined 20- to 40-year-old adult patients with a history of surgery for ARM and analyzed them from the points of social quality of life.

Patients and Methods

Twenty-nine patients with ARM, aged 20 to 40, were surveyed by questionnaire or personal interview. Thirteen with high-type and 9 with intermediate-type anomalies underwent abdominoperineal rectoplasty, and 7 with low-type anomalies underwent perineoplasty between 1965 and 1985. Responses were analyzed from the perspectives of bowel, urinary, and sexual functions and social activity.

Results

One third of patients with high- or intermediate-type anomalies occasionally complained of fecal soiling. However, the other patients gained good bowel function and enjoyed occupational or student life without problems. Fecal soiling was the key factor disturbing occupational life, although the problem remained within a socially manageable level. All of the patients with ARM had normal urinary function. Three of the 18 male patients had sexual problems such as erectile or ejaculatory dysfunction because of associated genitourinary anomalies. Nine of the 11 female patients had regular menstruation and the other 2 had irregular menstrual periods. Five female patients were married and 4 of the 5 had children (1-5 children). Modes of delivery were normal vaginal delivery in 8 and cesarean section in 1. Only one of the 5 had a slight sacral anomaly. However, she had no apparent abnormality of bladder function and got through pregnancy and delivery without difficulty.

Conclusion

One third of adult patients with high- or intermediate-type anomalies after abdominoperineal rectoplasty had some problems in bowel function. Fecal soiling was the key factor that disturbed their occupational life. Most of the patients had normal urinary and sexual functions if they did not have associated genitourinary anomalies and enjoyed social activities.     

Transanal one-stage endorectal pull-through for Hirschsprung's disease: a multicenter study

Background/purpose

Transanal endorectal pull-through (TEPT) is the latest development in treatment of Hirschsprung’s disease (HD). This prospective study was designed to evaluate the safety and efficacy of 1 stage TEPT technique in the management of patients with HD.

Methods

One hundred forty-nine children (116 boys and 33 girls) aged 8 days to 14 years underwent 1 stage TEPT procedure over an 18-month period at 5 Egyptian academic pediatric surgical centers and affiliated hospitals. Median follow-up was 12 months (range, 3 to 21 months). These patients were evaluated with regard to age, sex, length of the aganglionic segment, intraoperative details, and postoperative functional results or complications. An electromyogram (EMG), endorectal ultrasound scan, and lower gastrointestinal (GI) motility studies were reserved for patients with postoperative problems with bowel control.

Results

Mean operating time was 120.2 ± 27.8 minutes (range, 60 to 210 minutes). The average length of resected bowel was 26.8 ± 12.4 cm (range, 15 to 45 cm). Thirteen patients required laparotomy because of extension of aganglionic segment beyond the sigmoid colon in 9, tear in the mesenteric vessels in 2, and difficulties in getting to the submucosal plane in 2. Three deaths (2%) occurred 3 days, 4 days, and 4 weeks postoperatively, respectively. Postoperative complications included transient perianal excoriation in 48 patients (30 were <3 months of age), enterocolitis (n = 26), anastomotic stricture (n = 7), recurrent constipation (n = 6), hypoganglionosis at distal end of pulled through segment (n = 2), cuff abscess (n = 3), anastomotic leak (n = 1), adhesive bowel obstruction (n = 1), and rectal prolapse (n = 1). Complete anorectal continence was noted in 35 of 42 (83.3%) children older than 3 years, whereas soiling and frequent accidents still occur in 7, who showed a steady improvement in their continence status.

Conclusions

One-stage TEPT technique is both feasible and safe technique in properly selected children with rectosigmoid HD in all ages. The technique is easily learned and is associated with excellent clinical results.     

Outcomes after laparoscopic surgery in neonates with hypoplastic heart left heart syndrome

Background/Purpose

Laparoscopy has advanced the care of children for a variety of pediatric surgical diseases. However, complication rates for laparoscopic interventions in neonates with hypoplastic left heart syndrome (HLHS) have not been well described. The purpose of this study is to present the largest reported series of laparoscopic surgery performed in patients with HLHS.

Methods

We conducted a single-institution, retrospective chart review for all neonates with HLHS who underwent a laparoscopic procedure from September 2002 to March 2005. Data regarding patient characteristics, intraoperative monitoring, previous cardiac surgery, perioperative complications, and postoperative mortality were assessed.

Results

Twelve patients with HLHS underwent a total of 13 operations during the study period (8 combined Nissen fundoplication and gastrostomy tubes, 3 isolated gastrostomy tubes, 1 Ladd procedure, and 1 combined Nissen fundoplication and gastrocutaneous fistula closure). All cases were completed laparoscopically. Patients had undergone palliative cardiac surgery but were not completely corrected; therefore, they were cyanotic. Perioperative complications were observed in 6 patients (3 gastrostomy tube site infections, 1 small bowel obstruction, 1 postoperative sepsis, and 1 urinary tract infection). There was no mortality in this series.

Conclusions

From this experience, it appears that laparoscopy can be performed safely and with satisfactory outcomes in patients with HLHS. However, a multidisciplinary approach, including the availability of a skilled and experienced cardiac anesthesia team, is believed to be critical to optimize outcomes in these critically ill children.     

Long-term surgical outcomes in congenital diaphragmatic hernia: observations from a single institution

Background/Purpose

Surgical complications are common in survivors of congenital diaphragmatic hernia (CDH), but little is known about long-term incidence patterns and associated predictors.

Methods

A cohort of 99 CDH survivors was prospectively followed at a single-institution multidisciplinary clinic. Data were gathered regarding the adverse surgical outcomes of hernia recurrence, chest and spinal deformity, and operative small bowel obstruction (SBO), and then were retrospectively analyzed in relation to perinatal and perioperative markers of disease severity to determine significant predictors. Statistical methods used included univariate and multivariate regression analysis, hazard modeling, and Kaplan-Meier analysis.

Results

At a median cohort age of 4.7 (range, 0.2-10.6) years, 46% of patients with patch repairs and 10% of those with primary repairs had a hernia recurrence at a median time of 0.9 (range, 0.1-7.3) years after repair. Chest deformity was detected in 47%. Small bowel obstruction and scoliosis occurred in 13%. Recurrence and chest deformity were significantly more common with patch repair, liver herniation, age at neonatal extubation greater than 16 days, oxygen requirement at discharge, and prematurity. The strongest predictor of SBO was patch repair. Multivariate analysis showed that patch repair was independently predictive of recurrence and early chest deformity (odds ratios of 5.0 and 4.8, confidence intervals of 1-24 and 1-21, P < .05). Use of an absorbable patch was associated with the highest risk of surgical complications.

Conclusions

For long-term survivors of CDH, specific perinatal and operative variables, particularly patch repair, are associated with subsequent adverse surgical outcomes.     

Indication for pediatric muscle biopsy determines usefulness

Purpose

Diagnostic skeletal muscle biopsy is an invasive procedure used for evaluation of neuromuscular disorders. We hypothesize that the yield of biopsy varies with its indication or suspected diagnosis.

Methods

Retrospective review of all muscle biopsies was performed at an academic tertiary care center between January 1, 1996, and August 1, 2006.

Results

A total of 142 muscle biopsies were performed on 127 children. Mean age at biopsy was 5.3 years (median, 3.3; range, 8 days-21 years) with 48% female. Follow-up was maintained for a mean 3.4 years (median, 2.2; range, 1 month-10.4 years). Specific pathological diagnoses were obtained from 33 (23%) of 142. Changes in therapy resulted from 11 (8%) of 142 biopsies. Treatment changed for all patients with prebiopsy suspicion of inflammatory or neoplastic processes (7/7, 100%); these accounted for 7 (64%) of 11 patients with treatment changes. Thirteen patients underwent multiple biopsies, with 1 (8%) patient's treatment adjusted as a result. Fifteen neonates (<100 days) underwent a total of 17 biopsies; none changed treatment plans.

Conclusions

Muscle biopsy for neuromuscular disorders is inconsistently useful. Specific diagnoses are occasionally revealed, but treatment changes are infrequent except in those patients with suspected neoplastic or inflammatory disease. Ongoing study is required to determine the most rational indications for this procedure.     

Evaluation of the Pretransplantation Phase of the Hemopoietic Stem Cell Program in a Tertiary Hospital

Introduction

Therapeutic decisions and clinical events during the pretransplantation phase of stem cell transplantation (SCT) may influence survival, quality of life, and efficiency of health expenses. However, there is a lack of relevant published data.

Aims

The aims of this study were to identify reasons why the procedure was not performed and to know the waiting time for SCT candidates.

Patients and Methods

We collected pretransplantation data from 166 consecutive patients evaluated by the SCT Committee of a tertiary center between April 2005 and December 2006.

Results

One hundred fifty-two of 166 patients were referred for the first time. Additionally, 14 were reconsidered as candidates for a subsequent SCT due to relapse, graft failure, secondary malignancy, or a multiple-graft program. One hundred forty-one were accepted for transplantation, whereas 25 were not. At the time of analysis, 22 patients were still awaiting SCT, 8 were delayed because they required additional courses of treatment, and 32 were excluded because of death (34.4%), poor stem cell mobilization (21.9%), patient refusal (15.6%), relapse/progression (9.4%), comorbidity (6.3%), or absence of a donor (6.3%). The median time between inclusion in the program and transplantation was 3.6 months (range, 0.27-13.43), and 5.7 months (P < .05) for unrelated allogeneic transplantation. No significant differences were observed in the diagnosis or hospital of origin.

Conclusions

SCT was not performed in 22% of transplant candidates, mainly due to death, insufficient stem cell mobilization, patient refusal, or disease progression/relapse. The median time between inclusion in the SCT program and transplantation was 3 months, but longer among the unrelated allogeneic transplantations.     

Development of an implantable artificial anal sphincter using a shape memory alloy

Background/purpose

The authors created a new artificial anal sphincter using a shape memory alloy (AS-SMA) to treat fecal incontinence and evaluated its validity.

Methods

AS-SMA consists of 2 Ti-Ni plates to sandwich the intestine and generates a pressure of 55 mm Hg at its resting position. With the electric power supply, the 2 metals bend to form an almondlike shape making a maximum gap of 33 mm between each other at the temperature of 55°C. The device was attached to the colostomy in a piglet and was operated several times a day for 1 month. Fecal continence, bowel movements, and general condition of the piglet were recorded. After the experiment, tissue damage around the device was investigated.

Results

Fecal continence was obtained while the device was in the resting position. When it was operated, bowel movements were observed. The bowel movements to operations ratio was 82:105 (78%). During the experiment, the animal had neither abdominal distension nor vomiting. At the autopsy, there was mild inflammation and shallow burns around the device. No compression injury was detected.

Conclusions

AS-SMA achieved fecal continence of the colostomy. With reduction of the associated side effects, it would be a potential substitute for an impaired anal sphincter.     

Bacterial translocation and infected pancreatic necrosis in acute necrotizing pancreatitis derives from small bowel rather than from colon

Background

The clinical course of acute necrotizing pancreatitis (ANP) is determined by the superinfection of pancreatic necrosis. To date, the pathophysiology of the underlying bacterial translocation is poorly understood. The present study investigated the bacterial source of translocation.

Methods

A terminal loop ileostomy was applied in rats. Selective digestive decontamination (SDD) of either the small bowel or the colon was performed. After 3 days of SDD, severe ANP was induced. At 24 hours, bacterial translocation was assessed by cultures of bowel mucosa, mesenteric lymph nodes, and pancreas using a scoring system (0-4).

Results

Without SDD, pancreatic infection was present in all cases with an average score of 2.67. Colon SDD reduced pancreatic superinfection to 1.67 (not significant). SDD of the small bowel significantly reduced superinfection to 1.0 (P < .005).

Conclusions

Bacterial translocation from the colon is less frequent than translocation from the small bowel. Thus, the small bowel seems to be the major source of enteral bacteria in infected pancreatic necrosis.     

A comparison of circumumbilical and transverse abdominal incisions for neonatal abdominal surgery

Purpose

Although neonatal bowel surgery traditionally involves a transverse abdominal incision, several authors have reported that the circumumbilical incision is effective and cosmetically appealing. We report the first study comparing the circumumbilical incision to the transverse abdominal incision for a variety of neonatal abdominal operations.

Methods

Retrospective cohort analysis comparing the circumumbilical incision to the transverse abdominal incision for neonates who underwent surgical repair of malrotation, duodenal atresia/web, or intestinal atresia/web was performed between 1999 and 2009.

Results

One hundred thirty-two patients underwent a laparotomy through a transverse abdominal incision (n = 106) or a circumumbilical incision (n = 26). Baseline characteristics between groups were similar. No differences were found when comparing operative time, postoperative days on a ventilator, narcotic infusion, time to full feeds, length of hospital stay, incidence of surgical site infection, and bowel obstruction. Although more incisional hernias occurred in the circumumbilical incision group (38%) than the transverse abdominal incision group (6%), all hernias in the circumumbilical group resolved without intervention, whereas 33% required surgical repair in the transverse abdominal group.

Conclusions

Because of its cosmetic advantages and similar outcomes to the transverse abdominal incision, the circumumbilical incision should be considered as an alternative to the transverse abdominal approach in neonatal surgery.     

The inside-out transobturator male sling for the surgical treatment of stress urinary incontinence after radical prostatectomy: midterm results of a single-center prospective study

Background

Transobturator slings are currently promoted for the treatment of stress urinary incontinence (SUI) after radical prostatectomy (RP), but data on outcome remain limited.

Objective

To assess, at midterm, the efficacy and safety of the inside-out transobturator male sling for treating post-RP SUI and to determine factors associated with failure.

Design, setting, and participants

Prospective one-center trial involving 173 consecutive patients without detrusor overactivity, treated between 2006 and 2011 for SUI following RP.

Intervention

Placement of an inside-out transobturator sling.

Measurements

Baseline and follow-up evaluations included uroflowmetry and continence and quality-of-life (QoL) questionnaires. Cure was defined as no pad use and improvement as a number of pads per day reduced by ≥50% and two or fewer pads. Complications were recorded, and factors associated with treatment failure were evaluated.

Results and limitations

Preoperatively, 21%, 35%, and 44% of the patients were using two, three to five, and more than five pads per day, respectively. After a median follow-up of 24 mo (range: 12-60 mo), 49% were cured, 35% improved, and 16% not improved. QoL was enhanced (p < 0.001), and 72% of patients were moderately to completely satisfied with the procedure. Maximum flow rates were slightly reduced (p = 0.004); postvoid residual volumes were similar (p = 0.097). Complications were urinary retention after catheter removal (15%), perineal/scrotal hematoma (9%), pain lasting >6 mo (3%), and sling infection (2%); all were managed conservatively. Severe SUI before sling surgery was not associated with a worse outcome, whereas obesity and a history of pelvic irradiation or bladder neck stenosis were independent risk factors of failure, with risk ratios of 7.9 (95% confidence interval [CI], 3.3-18.9), 3.3 (95% CI, 1.4-7.8), and 2.6 (95% CI, 1.1-6.5), respectively.

Conclusions

The inside-out transobturator male sling is an efficient and safe treatment for post-RP SUI at midterm. Patients with prior pelvic irradiation may not be suitable candidates.