To the Editor:
The article written by Khoshoo et al (Pediatrics 2007;120:946-949),
trying to expose the inconsistency between the perceived and confirmed
diagnosis of regurgitation often leading to the unnecessary use of gastric
acid (GA) suppressants, is both timely and pertinent to the practice of
general pediatrics.
The benefit of GA suppressants in ameliorating the complications of
regurgitation is unquestionable. However, prior to prescribing such
agents, health care providers must be cognizant of their potential adverse
effects. Therapy with GA suppressants increases the risk of acute
gastroenteritis and community acquired pneumonia, as shown by prior
studies (1). Force et al reported that the prolonged use of H2 receptor
antagonists may promote vitamin B12 deficiency by impairing its GA and
pepsin-mediated release from dietary sources (2, 3). More recently,
researchers have recognized the nephrotoxic potential of proton pump
inhibitors (PPI) through the suggested association with acute interstitial
nephritis (4, 5).
Although larger cohorts of patients are needed to validate the
author’s results, extrapolating them to the general pediatric population
using a more conservative number will still allow for a more cost-
effective use of these drugs by saving a substantial amount of health care
dollars. Furthermore, avoiding their unnecessary use will prevent
potentially deleterious adverse effects. It is therefore essential for
health care providers to ascertain the diagnosis of regurgitation and
prescribe GA suppressants more cautiously.
References:
1. Canani RB, et al. Therapy with Gastric Acidity Inhibitors
Increases the risk of acute Gastroenteritis and community acquired
pneumonia in children. Pediatrics 2006; 117;e817-e820.
2. Force RW, Nahata MC. Effect of histamine h2-receptor antagonists
on vitamin B12 absorption. Ann Pharmacother 1992 Oct; 26(10):1283-6.
3. Ruscin JM, Page RL 2 nd, Valuck RJ. Vitamin B 12 deficiency
associated with histamine (2)-receptor antagonists and a proton pump
inhibitor. Ann Pharmacother 2002 May; 36(5):812-6.
4. Harmark L, et al. Proton pump inhibitor-induced acute interstitial
nephritis. Br J Clin Pharmacol 2007 Jul 17 (Epub ahead of print).
5. Geevasinga N, et al. Proton pump inhibitors and acute interstitial
nephritis. Clin Gastroenterol Hepatol 2006 May (4)5; 597-604.
Conflict of Interest:
None declared