Johns Hopkins Manual for GI Endoscopic Nurses, Third Edition

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

Chapter 44: Esophageal Manometry Studies (continued)

John Clarke, MD; Sameer Dhalla, MD, MHS

Esophageal motility studies are performed to measure esophageal pressures and contractions. They may be indicated in patients having difficulty swallowing, experiencing noncardiac chest pain, and heartburn. This test measures the pressures within the esophagus by passing a long, thin, flexible manometric catheter (diameter is comparable to a nasogastric tube) into the stomach. The catheter is then pulled back slowly through the LES, through the body of the esophagus, and through the upper esophageal sphincter (UES). The transmitters placed every 5 cm on the catheter transmit the pressures to…