Influence of labetalol on cocaine-induced coronary vasoconstriction in humans.


PURPOSE Although labetalol is sometimes given to patients with cocaine-associated chest pain, its influence on cocaine-induced coronary vasoconstriction is unknown. PATIENTS AND METHODS In 15 patients (7 men, 8 women, aged 40 to 79 years) undergoing catheterization for chest pain, heart rate, mean arterial pressure, and coronary arterial area (by computer… (More)


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