A 26-year-old woman is brought to the emergency department by her husband 1 hour after the onset of chest palpitations. Her symptoms began suddenly while she was drinking coffee and have persisted since then. She has not had shortness of breath, chest pain, dizziness, or loss of consciousness. She has experienced these palpitations before, but they typically resolve spontaneously within a few minutes. She has no history of serious illness and takes no medications. Her temperature is 36.8°C (98.2°F), pulse is 155/min, respirations are 18/min, and blood pressure is 130/82 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 97%. Rapid intravenous administration of a medication to this patient results in instantaneous resolution of the arrhythmia but is accompanied by short-lived flushing, burning in the chest, and shortness of breath. Which of the following medications was used to treat this patient's condition?

Question

A 26-year-old woman is brought to the emergency department by her husband 1 hour after the onset of chest palpitations. Her symptoms began suddenly while she was drinking coffee and have persisted since then. She has not had shortness of breath, chest pain, dizziness, or loss of consciousness. She has experienced these palpitations before, but they typically resolve spontaneously within a few minutes. She has no history of serious illness and takes no medications. Her temperature is 36.8°C (98.2°F), pulse is 155/min, respirations are 18/min, and blood pressure is 130/82 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 97%. Rapid intravenous administration of a medication to this patient results in instantaneous resolution of the arrhythmia but is accompanied by short-lived flushing, burning in the chest, and shortness of breath.  Which of the following medications was used to treat this patient's condition?

Quizplus · Accepted Answer

Eductional Objective: Adenosine causes hyperpolarization of the nodal pacemaker to briefly block conduction through the atrioventricular node, and it is effective in the initial treatment of paroxysmal supraventricular tachycardia.  Common adverse effects include flushing, chest burning (due to bronchospasm), hypotension, and high-grade atrioventricular block.

A 26-Year-Old Woman Is Brought to the Emergency Department by Her