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• W2114890996 abstract "Background— Largely on the basis of 2 randomized trials published in the 1990s, β-blockers were initially promoted as an evidence-based intervention for preventing cardiac complications of noncardiac surgery. However, subsequent studies raised concerns about a widespread use of perioperative β-blockade. Little is known regarding how this changing evidence influenced the use of perioperative β-blockers in clinical practice. Methods and Results— We conducted a population-based, time-series analysis (April 1999 to March 2010) among residents of Ontario, Canada (age 66 years and older), to evaluate the influence of research publications and practice guidelines on rates of new β-blocker prescriptions before major elective noncardiac surgery. In an analysis of 249 828 procedures, the rate of new β-blocker prescriptions increased from 26.3 per 1000 procedures in April 1999 to 62.7 per 1000 procedures in the first quarter of 2005, after which it decreased to 19.7 per 1000 procedures by March 2010. We observed a marked decrease in prescriptions ( P =0.004) during early 2005, without any preceding publications that raised concerns about perioperative β-blockade. There was no change ( P =0.98) in prescription rates after the May 2008 publication of a multicenter, randomized trial that showed increased mortality from perioperative β-blockade. Prescribing trends remain unchanged after revisions of related practice guidelines in 2002 ( P =0.28) and 2006 ( P =0.53). Conclusions— After a period characterized by increasing adoption of preoperative β-blockade between 1999 and 2005, prescriptions rates subsequently fell from 2005 to 2010. Further research is needed to understand the basis for these changes, which are only partially explained by evidence of potential harm." @default.
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• W2114890996 date "2012-07-01" @default.
• W2114890996 modified "2023-10-18" @default.
• W2114890996 title "Clinical Evidence, Practice Guidelines, and β-Blocker Utilization Before Major Noncardiac Surgery" @default.
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• W2114890996 doi "https://doi.org/10.1161/circoutcomes.112.965632" @default.
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