Abstract
BackgroundAggressive risk factor modification using evidence-based secondary prevention strategies is recommended in coronary artery disease (CAD). Utilization of such strategies was compared in patients with nonobstructive CAD (NOCAD) and obstructive CAD (OCAD). MethodsPatients undergoing coronary angiography (excluding normal coronary angiograms), between January 2006 and June 2006, at the Veterans Affairs Medical Center were included. Demographic, clinical and treatment data were compared between the groups at baseline and 1 year. ResultsOf the 354 patients who underwent coronary angiography, 222 (63%) had follow-up data available at 12 ± 2months. The mean age in the NOCAD (n=119) and OCAD (n=103) groups was similar. There was a lower prevalence of hypertension and heart failure (P < 0.05) in the NOCAD group. Compared with the OCAD group, aspirin use was similar but statin use was lower in the NOCAD group (P=0.008). At 1 year, statin use (P=0001) and angiotensin-converting enzyme inhibitor/angiotensin receptor blocker use (P=0.001) were significantly lower, whereas the use of aspirin was numerically lower (P=0.06) in the NOCAD group. Mean low-density lipoprotein cholesterol levels were at goal (<100mg/dL) in the NOCAD group at baseline and 1 year, whereas the same slightly worsened in the OCAD group at 1 year. ConclusionsThe use of evidence-based medical therapy is lower in patients with NOCAD compared with those with OCAD. Improved awareness among health care providers and a unified effort to implement secondary prevention strategies may help correct such deficiencies.
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