Additionally, adequate acid suppression is directly related to successful eradication. Thus, the likelihood of treatment success can be improved by using higher doses of PPIs and avoiding ones that are more likely to be metabolized quickly in some patients (lansoprazole, omeprazole). Patient adherence to the treatment regimen is an important determinant of effectiveness.9,29 Adding vitamin C 400 to 1000 mg/d, vitamin E 100 to 400 mg/d, and probiotics may improve the effectiveness of treatment.9,30
Duration of treatment is directly related to treatment effectiveness. Whenever possible, opt for 14 days of treatment instead of just 7.9
Test of cure.Patients treated for H pylori should be re-tested no sooner than 4 weeks after completion of therapy. Urea breath testing, stool antigen testing, and endoscopic biopsies (if endoscopy is indicated for some other reason) can all be used post treatment for test of cure.9
Barrett esophagus
Chronic reflux can lead to BE, in which metaplastic columnar epithelium replaces the normal squamous epithelium lining the distal esophagus. BE is linked to dysplasia and esophageal adenocarcinoma (EAC).11 Endoscopic examination with biopsy is used to diagnosis BE. The global prevalence of histology-confirmed BE in people with GERD symptoms is 7.2%.10 Similar to GERD and H pylori infections, the prevalence of BE varies significantly with geographic location (14% in North America; 3% in the Middle East).10 BE is twice as likely to occur in men as in women, and it is rare in children.10
Whom to screen
The American College of Gastroenterology recommends consideration of screening with upper endoscopy for men with chronic GERD (> 5 years) or frequent GERD symptoms (once weekly or more often), plus 2 or more of the following risk factors: age > 50 years, Caucasian race, central obesity, smoking (current or past), or a family history of BE or EAC (TABLE 12,9-11). Screening for BE in women is not routinely recommended but can be considered in individuals with several of the risk factors just described.