Endoscopic negative pressure therapy for duodenal leaks.

Background and study aim: Endoscopic negative pressure therapy (ENPT) is well established in the treatment of perforations of various etiologies in the upper and lower gastrointestinal tract. For duodenal perforations exist only case reports and series. Different indications are possible for ENPT in duodenal position: primary therapy for leaks, preemptive therapy after surgery for example, after ulcer suturing or resection with anastomoses, or as second line therapy in cases of recurrent anastomotic insufficiencies with leakage of duodenal secretion. Methods: A retrospective 4-year case series of negative pressure therapy in duodenal position indicated by different etiologies and a comprehensive review of current literature on endoscopic negative pressure duodenal therapy are presented. Results: Patients with primary duodenal leaks n= 6 and with duodenal stump insufficiencies n = 4 were included. In seven patients ENPT was the first line and sole therapy. Primary surgery for duodenal leak was performed in n = 3 patients. Mean duration of ENPT was 11.0 days, mean hospital stay was 30.0 days. Re-operation after start of ENPT was necessary in two patients with duodenal stump insufficiencies. Surgery after termination of the ENPT was not necessary in any patient. Discussion: In our case series and in the literature, ENPT has been shown to be very successful in the therapy of duodenal leaks. A challenge in ENPT for duodenal leaks is the appropriate length of the probe to safely reach the leak and keep the open pore element at the end of the probe in place despite intestinal motility.

Differences in fluid removal of different open-pore elements for endoscopic negative pressure therapy in the upper gastrointestinal tract.

Endoscopic negative pressure therapy is an effective treatment strategy for various defects of the gastrointestinal tract. The functional principle is based on an open-pore element, which is placed around a perforated drainage tube and connected to a vacuum source. The resulting open-pore suction device can undergo endoluminal or intracavitary placement. Different open-pore suction devices are used for endoscopic negative pressure therapy of upper gastrointestinal tract defects. Comparative analyses for features and properties of these devices are still lacking. Eight different (six hand-made devices and two commercial devices) open-pore suction devices for endoscopic negative pressure therapy of the upper gastrointestinal tract were used, amount fluid removed was evaluated. The evaluation parameters included the time to reach the target pressure, the time required to remove 100 ml of water, and the material resistance of the device. All open-pore suction devices are able to aspirate the target volume of fluids. The time to reach the target volume varied considerably. Target negative pressure was not achieved with all open-pore suction devices during the aspiration of fluids; however, there was no negative effect on suction efficiency. Of the measurement data, material resistance could be calculated for six open-pore elements. We present a simple experimental, nonphysiologically setup for open-pore suction devices used for endoscopic negative pressure therapy. The expected quantity of fluids secreted into the treated organs should affect open-pore suction device for endoscopic negative pressure therapy.

Endoscopic negative pressure therapy as stand-alone treatment for perforated duodenal diverticulum: presentation of two cases.

BACKGROUND: Endoscopic negative pressure therapy is a novel and successful treatment method for a variety of gastrointestinal leaks. This therapy mode has been frequently described for rectal and esophageal leakages. Duodenal diverticular perforations are rare but life-threatening events. The early diagnosis of duodenal diverticular perforation is often complicated by inconclusive symptoms. This is the first report about endoscopic negative pressure therapy in patients with perforated duodenal diverticula. CASE PRESENTATION: We present two cases of duodenal diverticula perforations treated with endoscopic negative pressure therapy as stand-alone treatment. Start of symptoms varied from one to three days before hospital admission. Early sectional imaging led to the diagnosis of duodenal diverticular perforation. Both patients were treated with endoluminal endoscopic negative pressure therapy with simultaneous feeding option. Three respective changes of the suction device were performed. Both patients were treated with antibiotics and antimycotics during their hospital stay and be discharged from hospital after 20 days. CONCLUSIONS: This is the first description of successful stand-alone treatment by endoscopic negative pressure therapy in two patients with perforated duodenal diverticulum. We thus strongly recommend to attempt interventional therapy with endoluminal endoscopic negative pressure therapy in patients with duodenal diverticular perforations upfront to surgery.

ERCP in infants, children and adolescents is feasible and safe: results from a tertiary care center.

BACKGROUND: Indications for endoscopic retrograde cholangiopancreatography (ERCP) in children differ from adults. Paucity of data and concerns about potential lower effectiveness and more side effects limit its use even in high volume centers. We retrospectively analyzed indications, success rates, limitations, and side effects of ERCPs in children <18 years. METHODS: From January 2012 to March 2015, 54 ERCPs were performed in 31 children (median age 11 (0-17) years; median weight 22 (3.3-142.7) kg) with suspected choledocholithiasis (n = 13 interventions in 9 patients), post-transplantation anastomotic stenosis (10/4), malignancy (10/5), chronic pancreatitis (7/1), biliary atresia (6/6), anomaly (2/2), leak (4/3), or primary sclerosing cholangitis (PSC) (2/1). All patients were followed up as inpatients. RESULTS: Thirty-six therapeutic and 18 diagnostic procedures were performed by adult ERCP expert endoscopists. Successful intervention was achieved in 90.7% of cases. Failed cannulation (n = 4) was associated with lower body weight (p = 0.023). In children younger than 1 year, ERCP was significantly more often diagnostic than in patients >1 year (p < 0.001). In three of six infants with suspected atresia, surgical exploration was avoided. Five complications were recorded (9.3%), and included four episodes of mild pancreatitis (7.4% post-ERCP pancreatitis (PEP) rate) and one cholangitis in PSC. A trend towards a protective effect of pancreatic stents on PEP was observed. All complications were managed conservatively. No complications were attributed to mechanical stress on the gastrointestinal tract. CONCLUSIONS: ERCP in newborns, infants, and adolescents can be safely performed with high technical and clinical success. Endoscopists must be aware of differing spectrum of pediatric diseases. Failed cannulation was associated with lower body weight of young children. Complications were similar to rates reported in adults.