AN NOVEL DEVICE FOR ENDOSCOPIC RECORDING GASTROINTESTINAL SLOW WAVE

SH Kim; HJ Chun; S Kim; JH Kim; HJ Jeon; S Jang; SJ Choi; JM Lee; HS Choi; ES Kim; B Keum; YT Jeen; HS Lee; CD Kim

doi:10.1055/s-0039-1681537

Endoscopy, Table of Contents

Endoscopy 2019; 51(04): S124-S125
DOI: 10.1055/s-0039-1681537

ESGE Days 2019 oral presentations

Saturday, April 6, 2019 14:30 – 16:00: Motility 2 Panorama Hall

Georg Thieme Verlag KG Stuttgart · New York

AN NOVEL DEVICE FOR ENDOSCOPIC RECORDING GASTROINTESTINAL SLOW WAVE

Authors

SH Kim

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
HJ Chun

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
S Kim

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
JH Kim

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
HJ Jeon

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
S Jang

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
SJ Choi

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
JM Lee

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
HS Choi

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
ES Kim

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
B Keum

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
YT Jeen

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
HS Lee

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of
CD Kim

¹Korea University College of Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Seoul, Korea, Republic of

Abstract

Full Text

Aims:

Gastric slow waves regulate peristalsis, and gastric dysrhythmias have been implicated in functional motility disorders. To accurately define slow wave patterns, it is currently necessary to collect recordings during open surgery, which is invasive and limit their application. We therefore developed a novel gastric slow wave mapping device for use during endoscopic procedures. We aimed to assess feasibility of the new device for acquisition of gastrointestinal slow wave.

Methods:

The device consists of a spreading catheter constructed of a flexible core coated with Pebax. Acquisition of gastric electrical signals was performed on healthy fasted weaner pigs under general anesthesia. Once deployed with endoscopic guidewire, catheter arrays is revealed with 12 electrode at 5 mm intervals. A multi-channel recorder (Acknowledge 4.4, MP150; Biopac Systems, Santa Barbara, CA) was used to record gastric myoelectrical activity throughout the study. We compared gastric electrical signals from gastric mucosal according to various lesions.

Results:

Gastric slow wave activity was successfully recorded simultaneously via both the novel endoscopic probe and the serosal measurement. The mean amplitude was 0.67 ± 0.05 mV in endoscopic probe and 1.07 ± 0.11 mV in reference. Recordings from the device and a reference array in pigs were identical in frequency, and activation patterns and velocities were consistent.

Conclusions:

In conclusion, the novel endoscopic device achieves high-quality mucosal slow wave recordings. It might be applied for endoscopic diagnostic studies to document slow wave patterns in patients with gastric motility disorders.