Help
Subscribe


GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy

 28 May 2018

Advanced search
GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy Profile of Roy Pounder

Home

News  
Journals
Review Articles
Slide Atlas
Video Clips
Online Books
Advanced Digestive Endoscopy
Classical Cases
Conference Diary
PubMed
International GH Links
USA GH Links
National GH Links
National GI Societies
Other Useful Links




Emails on Gastroenterology and Hepatology
the National AIDS Treatment Advocacy Project
Visit the gastroenterology section of the EUMS

News

Monitoring systems for measuring esophageal acid exposure

The Slimline system on esophageal acid exposure compares to the Bravo system largely because of a flawed software scheme for electrode thermal calibration, and both systems can be improved by using an in vivo pH reference, reports this month's issue of the American Journal of Gastroenterology.

News image

fiogf49gjkf04

Dr John Pandolfino and colleagues from Illinois compared esophageal acid exposure data obtained during simultaneous esophageal pH studies.

The research team compared the use of the Bravo wireless and the Slimline catheter-Mark III Digitrapper pH systems.

The team reported that 25 asymptomatic subjects underwent endoscopy with endoclip placement at the squamocolumnar junction and manometry to localize the lower esophageal sphincter.

A Bravo capsule was placed 6 cm above the squamocolumnar junction and a Slimline catheter 5 cm above the lower esophageal sphincter and relative positions were checked fluoroscopically.

The researchers compared synchronized pH data by manual extraction into Excel spreadsheets and an in vivo pH reference was established with swallows of orange juice.

Acid exposure time was greater with Slimline compared to Bravo systems
American Journal of Gastroenterology

The team found that the median acid exposure time was greater with the Slimline compared to the Bravo system but electrode positions were similar.

The researchers noted that the dominant source of discrepancy between systems was an offset in recorded pH values around pH 4 as evidenced by the recorded values of the swallowed orange juice.

Bench-top testing suggested that this offset was attributable to the software designed to compensate for the difference in electrode recording characteristics between room and body temperature.

After adjusting the pH data sets to accurately reflect actual orange juice pH, the researchers observed that acid exposure between systems was similar.

Dr Pandolfino's team concludes, “The Slimline system on average over-recorded esophageal acid exposure compared to the Bravo system largely because of a flawed software scheme for electrode thermal calibration.”

“Accuracy of pH data sets from both systems can be improved by scrutiny for artifacts and use of an in vivo pH reference.”

Am J Gastroenterol 2005: 100(7): 1466
15 July 2005

Go to top of page Email this page Email this page to a colleague

 28 May 2018 
Therapeutic strategies for HCV
 28 May 2018 
Mesalazine in ulcerative colitis
 28 May 2018 
Technology and management of digestive diseases
 25 May 2018 
Technology to increase colorectal cancer screening
 25 May 2018 
Post‐operative complications in elderly IBD
 25 May 2018 
Colorectal cancer–specific mortality
 24 May 2018 
Alcohol consumption and outcomes in drug-induced liver injury
 24 May 2018 
Patient-reported outcome measures in IBD trials
 24 May 2018 
Precision medicine for tumors
 23 May 2018 
Management of perianal fistulas in Crohn’s disease
 23 May 2018 
Cardiovascular risk in diabetes mellitus with NAFLD
 23 May 2018 
High body mass index is and ulcerative colitis
 22 May 2018 
Worldwide H.pylori prevalence
 22 May 2018 
PPI and risk of stroke
 22 May 2018 
Online tool predicts bowel dysfunction severity prior to anterior resection
 21 May 2018 
PPI use and cognitive decline
 21 May 2018 
Depressive symptoms in IBD youth
 21 May 2018 
Fecal incontinence and quality of life in IBD
 18 May 2018 
Esophageal dilatation in clinical practice 
 17 May 2018 
IBD and later extraintestinal manifestations
 17 May 2018 
Repeat stool DNA testing
 17 May 2018 
IBS and chronic fatigue following GI infection
 16 May 2018 
Factors associated with fecal incontinence
 16 May 2018 
Diagnostic delay in Crohn's disease
 16 May 2018 
Cardiovascular risk in diabetes mellitus with NAFLD
 15 May 2018 
Guidelines for management of Crohn's
 15 May 2018 
New therapies for CDI
 15 May 2018 
Hep B in the Grey Zone
 14 May 2018 
Blood test for the diagnosis of fibrotic NASH
 14 May 2018 
Outcomes at bariatric centers of excellence
 14 May 2018 
Management of perianal fistulas in Crohn’s
 11 May 2018 
Detection of undiagnosed celiac disease
 11 May 2018 
Alcohol consumption and drug-induced liver injury
 10 May 2018 
Colorectal cancer screening
 10 May 2018 
Fibrosis in patients with chronic hepatitis B
 09 May 2018 
Fecal incontinence
 09 May 2018 
Health problems and IBS
 09 May 2018 
Esophageal dilatation in clinical practice 
 07 May 2018 
Omitting antibiotics in uncomplicated acute diverticulitis
 07 May 2018 
Health problems and IBS
 07 May 2018 
Assessment of diminutive colorectal polyps
 04 May 2018 
National Institutes of Health workshop and obesity
 04 May 2018 
Factors associated with fecal incontinence
 04 May 2018 
Colorectal cancer screening and ethnic inequities
 03 May 2018 
Gastrointestinal ultrasound in IBD
 03 May 2018 
Ultransonography in postsurgical recurrence in Crohn's
 02 May 2018 
Symptom assessment in cirrhotic ascites
 02 May 2018 
Hep C antiviral treatment and liver cancer risk
 02 May 2018 
Chronic Hep B
 01 May 2018 
European guidelines on pancreatic cystic neoplasms
 01 May 2018 
Interferon‐free regimens in Hep C
 01 May 2018 
Age at IBD onset and extraintestinal complications
 30 April 2018 
Formula for preterm infants
 30 April 2018 
Primary antibiotic resistance and sequential therapy for H. pylori
 27 April 2018 
Eastern and western practices for endoscopic resection of colorectal lesions
 27 April 2018 
Anxiety scale for chronic esophageal disease
 27 April 2018 
Disease activity in eosinophilic esophagitis
 26 April 2018 
Obesity and physical activity in diverticulosis
 26 April 2018 
Primary sclerosing cholangitis in the USA
 25 April 2018 
Aspirin and pancreatic cancer

Blackwell Publishing


GastroHep.com is a Blackwell Publishing registered trademark
© 2018 Wiley-Blackwell and GastroHep.com and contributors
Privacy Statement
Disclaimer
About Us