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Gastro-intestinal problems and concomitant medication in NSAID users: additional findings from a questionnaire-based
Maria Chiara Silvani1, Domenico Motola, Elisabetta Poluzzi
1Department of Pharmacology and Interuniversity Research Centre for Pharmacoepidemiology, University of Bologna, Bologna, Italy.
Background:
In a previous questionnaire-based survey, we found extensive use of nonsteroidal anti-inflammatory drugs (NSAIDs) in subjects with risk factors for serious gastrointestinal complications.
Aim:
This study focused on the use of NSAIDs in subjects who reported either (a) pre-existing disorders which would have required caution in using NSAIDs (e.g. dyspepsia/heartburn or peptic ulcer) or (b) co-medication with drugs having a high risk of interacting with NSAIDs.
Methods:
Between March and September 2002, 65 general practitioners (GPs) submitted a validated self-administered questionnaire on health status and drug use to 3,250 subjects (age >or=18 years, stratified by sex and age). The questionnaire was divided into three parts: (1) sociodemographic information, (2) symptoms/illnesses (in the previous 6 months) and (3) drugs taken during the previous week.
Results:
Of the 2,738 subjects who filled in the questionnaire (84% of responders), 633 (23%) used NSAIDs and, among them, 114 (18%) were chronic users. Among the subjects reporting dyspepsia/heartburn or ulcer (n=909 of 2,738), 24% were occasional NSAID users and 6% chronic users. Of the chronic NSAID users reporting gastrointestinal symptoms, 35% also used a drug for acid-related disorders, but only 14% used daily a proton pump inhibitor (PPI). One hundred six subjects used concomitantly more than one NSAID. Eighteen percent of the subjects using corticosteroids also reported NSAID use; similar proportions were seen in subjects using selective serotonin reuptake inhibitor (SSRI) antidepressants or calcium channel blockers, whereas 6% of the subjects with oral anticoagulants used NSAIDs.
Conclusions:
Our study shows that NSAIDs are frequently used in patients with upper gastrointestinal complaints or in combination with potentially interacting medications. Adverse effects and untoward drug interactions should be monitored in patients treated with NSAIDs in order to minimise their occurrence.
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