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Relation of patient age and mortality to reported contraindications to early beta-blocker use for non-ST-elevation acute coronary syndrome Allen LaPointe NM; Chen AY; Roe MT; Cohen DJ; Diercks DB; Hoekstra JW; Fesmire FM; Gibler WB; Ohman EM; Peterson EDAm J Cardiol 2009[Nov]; 104 (10): 1324-9We evaluated the reported contraindications to early beta-blocker use and associated mortality within and across patient age groups. Contraindications to early beta-blocker use were evaluated in patients with non-ST-elevation acute coronary syndrome in the Can Rapid Risk Stratification of Unstable Angina Patients Suppress Adverse Outcomes with Early Implementation of the American College of Cardiology/American Heart Association Guidelines (CRUSADE) initiative from February 2003 to December 2006. The prevalence, reasons, and trends in the contraindications were evaluated by age (or=75 years). The associations between the reported contraindications and in-hospital mortality were determined within and compared across age groups using the logistic generalized estimating equations method, adjusting for baseline patient characteristics. Of 112,448 patients, 11,711 (10.4%) had a reported contraindication to early beta-blocker use. The prevalence varied by age (or=75, 13.4%; p <0.0001). No significant changes were seen over time, except for a small increase in patients 40 patients in the registry, the median hospital level rate of reported contraindications was 9.9% (interquartile range 6.7% to 14.3%). The distribution of rates was more widespread among the hospitals' older versus younger patients. In all age groups, a statistically significant greater association was found with in-hospital mortality in those with reported contraindications versus those without contraindications who received a beta blocker (adjusted odds ratio 2.81, 95% confidence interval 2.28 to 3.46; adjusted odds ratio 2.50, 95% confidence interval 2.07 to 3.03; adjusted odds ratio 2.11, 95% confidence interval 1.88 to 2.37, for ages or=75 years, respectively). The strength of the association was similar across all age groups (interaction p = 0.19). The reported contraindications to early beta-blocker use were common and increased with age. The contraindications were independently associated with greater in-hospital mortality, underscoring the importance of accurately identifying contraindications. In conclusion, the results did not indicate any disparity in reporting the contraindications according to patient age.|*Adrenergic beta-Antagonists/administration & dosage[MESH]|Acute Coronary Syndrome/*drug therapy/*mortality[MESH]|Age Factors[MESH]|Aged[MESH]|Aged, 80 and over[MESH]|Bradycardia/epidemiology[MESH]|Cohort Studies[MESH]|Contraindications[MESH]|Female[MESH]|Hospital Mortality[MESH]|Humans[MESH]|Hypotension/epidemiology[MESH]|Male[MESH]|Middle Aged[MESH]|Registries[MESH]|United States/epidemiology[MESH] |
