PROTECT (Prospective Reinfarction Outcomes in the Thrombolytic Era Cardizem CD Trial): a randomized, double-blind clinical trial of diltiazem versus atenolol in secondary prophylaxis post non-Q wave myocardial infarction.
Can J Cardiol 1996;
12:1183-90. [PMID:
9191511]
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Abstract
OBJECTIVE
To describe the rationale and design of the Prospective Reinfarction Outcomes in the Thrombolytic Era Cardizem CD Trial (PROTECT).
DESIGN
A multicentre, randomized, double-blind, parallel-group comparison of once daily beta-therapy versus heart rate lowering calcium channel blocker therapy, in the reduction of one-year nonfatal reinfarction and cardiovascular death (combined primary end-point) initiated 24 to 96 h post non-Q wave myocardial infarction.
SETTING
One hundred and twenty hospitals across Canada.
PATIENTS
Over 7500 women and men aged 21 years or older with enzyme-confirmed non-Q wave infarction and without significant left ventricular systolic dysfunction will be recruited over two years.
INTERVENTIONS
Once daily beta-blocker therapy (oral atenolol, 50 to 200 mg) versus once daily calcium channel blocker therapy (oral diltiazem 120 to 360 mg) with follow-up for up to three years.
CONCLUSIONS
The PROTECT will be the largest all-Canadian cardiovascular trial to date and will compare two commonly prescribed agents for secondary prophylaxis following non-Q wave infarction. The scientific question addressed by the PROTECT is of major public health importance and the results of the study will directly affect current clinical practice.
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