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Therapeutic intent of proton pump inhibitor prescription among elderly nonsteroidal anti-inflammatory drug users.

Dries AM, Richardson P, Cavazos J, Abraham NS. Therapeutic intent of proton pump inhibitor prescription among elderly nonsteroidal anti-inflammatory drug users. Alimentary pharmacology & therapeutics. 2009 Sep 15; 30(6):652-61.

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BACKGROUND: Prescription of proton pump inhibitors (PPIs) has increased dramatically. AIM: To assess therapeutic intent of PPI prescription among elderly veterans prescribed nonsteroidal anti-inflammatory drugs. METHODS: Medical-record abstraction identified therapeutic intent of PPI prescription. An 'appropriate therapeutic intent' was defined as symptomatic gastro-oesophageal reflux disease or endoscopic oesophagitis, Zollinger-Ellison disease, dyspepsia, upper gastrointestinal event, Helicobacter pylori infection or nonsteroidal anti-inflammatory drug gastroprotection. Logistic regression predicted the outcome while adjusting for clinical characteristics. RESULTS: Of 1491 patients [mean 73 years (s.d. 5.6), 73% white and 99.8% men], among those charts which did document a therapeutic indication, 88.8% were appropriate. Prior gastroscopy was predictive of an appropriate therapeutic intent (OR 2.7; 95% CI: 1.9-3.7). Prescription to patients who used VA pharmacy services only, to in-patients, or by a cardiologist or an otolaryngologist were less likely to be appropriate. Gastroprotection was poorly recognized as an indication for PPI prescription, except by rheumatologists (OR 46.7; 95% CI: 15.9-136.9), or among highly co-morbid patients (OR 1.8; 95% CI: 1.1-2.9). Among in-patients, 45% of PPI prescriptions were initiated for unknown or inappropriate reasons. CONCLUSIONS: Type of provider predicts appropriate PPI use. In-patient prescription is associated with poor recognition of necessary gastroprotection and unknown therapeutic intent.

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