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P J Devereaux
Dr P J Devereaux, McMaster University, Hamilton, Ontario, Canada; phillipj@mcmaster.ca
STUDY DESIGN
Design:
randomised placebo-controlled trial (PeriOperative ISchemic Evaluation [POISE]).
Allocation concealment:
concealed.*
Blinding:
blinded (patients, clinicians, data collectors, and outcome adjudicators).*
STUDY QUESTION
Setting:
190 hospitals in 23 countries worldwide.
Patients:
8351 patients ⩾45 years of age (mean age 69 y, 63% men) who were having non-cardiac surgery with an expected hospital stay ⩾24 hours and fulfilled specific criteria indicating that they had, or were at risk of, atherosclerotic disease.
Intervention:
oral extended-release metoprolol succinate (n = 4174) or placebo (n = 4177), 100 mg 2–4 hours before surgery and 6 hours after surgery (or earlier if heart rate was ⩾80 bpm and systolic blood pressure was ⩾100 mm Hg), then 200 mg daily for …
Footnotes
Source of funding: Canadian Institutes of Health Research; Commonwealth Government of Australia’s National Health and Medical Research Council; Instituto de Salud Carlos III; British Heart Foundation; AstraZeneca.