Abstract
Background: Aspiration pneumonia is a common cause of morbidity and mortality. Several approaches, inclu- ding bed positioning, dietary changes, and oral hygiene, have been proposed to prevent aspiration pneumonia, yet few data are available on the efficacy of pharmacologic interventions in reducing the rate of aspiration. Objective: This study was a systematic literature review of the pharmacologic prevention of aspiration pneumonia. Methods: We searched MEDLINE (1996-2006); EMBASE (1974-2006); Cumulative Index to Nursing & Allied Health Literature (CINAHL) (1982-2006); Health Services Technology, Administration, and Research (HealthSTAR) (1975-2006); and the Cochrane Library for relevant articles. References of all included articles were reviewed. Studies were included if they had a prospective, controlled design with a primary outcome of prevention of aspiration pneumonia. Surrogate outcomes that had a direct link to decreasing the incidence of aspiration pneu- monia were considered. Selected articles were reviewed independently by 2 authors. Results: Of 1108 studies reviewed, 20 were analyzed. Angiotensin-converting enzyme inhibitors may be bene- ficial in selected patients at high risk for aspiration. Capsaicin may be a low-risk approach to stimulate swallowing and cough reflexes. Amantadine, cabergoline, and theophylline may cause serious adverse events, and their routine use for prevention of aspiration pneumonia is not recommended. Cilostazol should not be used because of the increased risk for bleeding. Conclusions: Limited information is available on benefits and risks to guide an evidence-based approach to the pharmacologic prevention of aspiration pneumonia. Considering the high incidence of aspiration pneumonia in older adults, large randomized clinical trials on the effectiveness of pharmacologic interventions are warranted. (Am J Geriatr Pharmacother. 2007;5:352-362) Key words: aspiration pneumonia prevention ACE inhibitors dopamine agonists substance P.
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