Johns Hopkins Manual for GI Endoscopic Nurses, Third Edition

Mouen Khashab, MD; Toshunia Robinson, MD; Anthony Kalloo, MD

Chapter 7: EGD With Dilation For Esophageal Strictures (continued)

David W. Victor III, MD

Dilation therapy is performed in the upper GI tract for the following conditions: achalasia, surgically or chemically induced esophageal and pyloric strictures, and webs or rings. The instruments used to dilate strictures include balloons (through-the-scope [TTS] and over-the-guidewire), mercury bougienage (Maloney) dilators, botulinum toxin injection, and hollow polyvinyl (Savary) dilators (Figure 7-1). The type of instrument used is dependent upon the severity of the stricture. Mild to moderately tight strictures can be dilated with a TTS balloon. Fluoroscopy is seldom required, and the…