Comprehensive coronary artery disease care in a safety-net hospital: results of Get With The Guidelines quality improvement initiative.

BACKGROUND: Adherence to published coronary artery disease (CAD) guidelines is suboptimal, particularly among minorities and the poor. While hospital-based quality-improvement programs may increase the use of evidence-based therapies, little data exist regarding the impact of such programs in sociodemographically disadvantaged (vulnerable) populations. Vulnerable patients in the United States are cared for primarily within the safety-net health system, which comprises urban public hospitals and outpatient community health centers. Denver Health is an example of an integrated system that encompasses both types of facilities. OBJECTIVE: To assess evidence-based medication use in CAD patients after initiation of an inpatient quality-improvement program at Denver Health. METHODS: We reviewed the medical records of 499 patients with angiographically proven CAD who were hospitalized between July 1998 and December 2002. Patients were prospectively identified through a multidisciplinary intervention led by a nurse manager, and their records were input retrospectively into the American Heart Association's Get With The Guidelines patient management tool. The association's program, which recommends initiating 4 cardioprotective drug classes while patients are hospitalized, was started 2 years into the observation period (August 2000). Treatment rates were compared over the ensuing years. We evaluated temporal trends in discharge use of 4 drugs: (1) betablockers, (2) angiotensin-converting enzyme inhibitors (ACEIs), (3) hydroxymethylglutaryl coenzyme A reductase inhibitors (statins), and (4) aspirin. We calculated the proportion of eligible patients (no documented contraindication) who were prescribed each drug category as well as the proportion who received all 4 drug categories, our principal composite outcome. If any one drug was absent, the composite criterion was considered unmet. RESULTS: We observed progressive improvement in discharge use of the 4- drug composite: 18% in 1998-1999 (95% confidence interval [CI], 12%-25%), 50% in 2000 (95% CI, 37%-63%), 62% (95% CI, 54%-70%) in 2001, and 72% (65%-79%) in 2002 (P <0.001 for between-year differences). Among eligible patients discharged in 2002, 90% received beta-blockers, 91% received ACEIs, 86% received statins, and 93% received aspirin. CONCLUSIONS: Implementation of a multidisciplinary program led by a nurse manager was associated with increased CAD guideline compliance among sociodemographically disadvantaged patients. This compliance exceeded national averages. Achievement of the composite measure of use of all 4 recommended drug categories at discharge improved from 18% in 1998-1999 to 72% in 2002.