Which of the following adrenergic agonists is used to delay preterm labor (tocolysis) by relaxing uterine smooth muscle?
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Correct answer: Terbutaline
Terbutaline is a Beta-2 agonist. Stimulation of Beta-2 receptors in the uterus leads to a decrease in intracellular calcium and relaxation of the myometrium, delaying labor.
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