Comparison of lumen apposing metal stents versus endoscopic balloon dilation for the management of benign colorectal anastomotic strictures

BACKGROUND AND AIMS

Limited data exist evaluating lumen apposing metal stents (LAMS) with endoscopic balloon dilation (EBD) for the treatment of benign colorectal anastomotic strictures (BCAS). This study compares outcomes of both interventions.

METHODS

Patients with left-sided BCAS treated with LAMS vs. EBD were identified retrospectively. The primary outcome was a composite of crossover to another intervention to achieve clinical success or recurrence requiring reintervention.

RESULTS

Twenty-nine patients (11 LAMS; 18 EBD) were identified, with longer follow-up in the EBD group (734 vs. 142 days, p=0.003). No significant differences were found in the composite outcome, technical success, clinical success, or components of composite outcome. With LAMS, there was a nonsignificant trend toward fewer procedures (2.4 vs. 3.3, p=0.06) and adverse events (0 vs. 16.7%, p=0.26).

CONCLUSIONS

LAMS appears to be as effective as EBD for the treatment of BCAS but may require fewer procedures and may be safer than EBD.

Full metal jacket: salvage of EUS-guided gallbladder drainage

Video 1Full metal jacket: salvage of EUS-guided gallbladder drainage.

Bariatric embolization for suppression of the hunger hormone ghrelin in a porcine model

PURPOSE

To prospectively test in a porcine model the hypothesis that bariatric embolization with commercially available calibrated microspheres can result in substantial suppression of systemic ghrelin levels and affect weight gain over an 8-week period.

MATERIALS AND METHODS

The institutional animal care and use committee approved this study. Twelve healthy growing swine (mean weight, 38.4 kg; weight range, 30.3-47.0 kg) were evaluated. Bariatric embolization was performed by infusion of 40-μm calibrated microspheres selectively into the gastric arteries that supply the fundus. Six swine underwent bariatric embolization, while six control animals underwent a sham procedure with saline. Weight and fasting plasma ghrelin and glucose levels were obtained in animals at baseline and at weeks 1-8. Statistical testing for differences in serum ghrelin levels and weight at each time point was performed with the Wilcoxon signed rank test for intragroup differences and the Wilcoxon rank sum test for intergroup differences.

RESULTS

The pattern of change in ghrelin levels over time was significantly different between control and experimental animals. Weekly ghrelin levels were measured in control and experimental animals as a change from baseline ghrelin values. Average postprocedure ghrelin values increased by 328.9 pg/dL ± 129.0 (standard deviation) in control animals and decreased by 537.9 pg/dL ± 209.6 in experimental animals (P = .004). The pattern of change in weight over time was significantly different between control and experimental animals. The average postprocedure weight gain in experimental animals was significantly lower than that in control animals (3.6 kg ± 3.8 vs 9.4 kg ± 2.8, respectively; P = .025).

CONCLUSION

Bariatric embolization can significantly suppress ghrelin and significantly affect weight gain. Further study is warranted before this technique can be used routinely in humans.