June Johnson is a 55-year-old female who was admitted to the hospital during two hours of crushing substernal chest pain. On physical examination she was pale and diaphoretic, in obvious distress. Her pulse was 75 and her blood pressure was 75/40. An EKG showed ST elevations, and cardiac enzymes drawn confirmed the diagnosis of a myocardial infarction. B. If you were forced to use a drug to improve her blood pressure, which receptor agonist would be the most helpful for increasing her cardiac output without increasing afterload? Explain.

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