Wire-guided pancreatic pseudocyst drainage by using a modified needle knife and therapeutic echoendoscope - 17/08/11

Doi : 10.1016/j.gie.2005.10.032

Riad R. Azar, MD ^⁎, Young S. Oh, MD, Eileen M. Janec, MD, Dayna S. Early, MD, Sreenivasa S. Jonnalagadda, MD, Steven A. Edmundowicz, MD
Current affiliations: Division of Gastroenterology, Washington University School of Medicine, St. Louis, Missouri, USA

Reprint requests: Riad R. Azar, MD, Division of Gastroenterology, Washington University School of Medicine, 660 South Euclid Ave, Campus Box 8124, St. Louis, MO 63110.

St. Louis, Missouri, USA

Abstract

Background

Various methods to drain pancreatic pseudocysts by using EUS guidance have been reported in the literature.

Objective

A new drainage technique is described that uses a modified needle knife advanced over a guidewire positioned in the pseudocyst by EUS guidance.

Design

Retrospective chart review.

Setting

Academic medical center.

Patients

Consecutive subjects from December 1, 2002, to January 10, 2005, with symptomatic pseudocysts in whom EUS-guided drainage was attempted.

Interventions

By using a therapeutic linear echoendoscope, a 19-gauge aspiration needle was inserted into the pseudocyst. A guidewire was placed through the needle, and a needle knife with the cutting wire protruding and bent was advanced over the guidewire to contact the stomach mucosa. The needle knife was then advanced by using electrocautery into the pseudocyst. The cystenterostomy was dilated by using a balloon over the guidewire. One to 4 stents were placed through the tract.

Main Outcome Measurements

Successful pseudocyst drainage.

Results

A total of 21 of 23 patients underwent technically successful pseudocyst drainage. One patient had self-limited hypotension during the procedure. Another patient had free intraperitoneal air after the procedure but correct stent placement.

Limitations

Retrospective analysis, small sample size.

Conclusions

In this preliminary experience, wire-guided pseudocyst drainage with a modified needle knife appears effective and safe while allowing for a more controlled pseudocyst puncture.

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Plan

Patients and methods

Results

Discussion

Portions of this work were presented at the American Society for Gastrointestinal Endoscopy at Digestive Disease Week, New Orleans, Louisiana, May 15-20, 2004 (Gastrointest Endosc 2004;59:AB222).