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Review Question - QID 213401

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QID 213401 (Type "213401" in App Search)
An newborn infant comes to the attention of the neonatal care unit because he started having heavy and rapid breathing. In addition, he was found to be very irritable with pale skin and profuse sweating. Finally, he was found to have cold feet with diminished lower extremity pulses. Cardiac auscultation reveals a harsh systolic murmur along the left sternal border. Notably, the patient is not observed to have cyanosis. Which of the following treatments would most likely be effective for this patient's condition?