<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 26-year-old healthy woman presents with lightheadedness, palpitations, and sweating, which started suddenly after she was frightened by her neighbors dog. The patients blood pressure is 13580 mm Hg, the heart rate is 150min, the respiratory rate is 15min, and the temperature is 36.6C 97.9F. Her ECG is shown in the exhibit. What is the preferred agent for pharmacologic management of this condition?? A: Verapamil, B: Metoprolol, C: Amiodarone, D: Adenosine, E: Propafenone,  <response>: This is a question about treating supraventricular tachycardia SVT. The patient has a sudden onset of symptoms like palpitations, lightheadedness, and sweating, along with a heart rate of 150 bpm. This presentation is consistent with SVT. The ECG shows a regular narrow complex tachycardia, confirming SVT. The treatment options listed are different medications used to treat arrhythmias. Verapamil and diltiazem calcium channel blockers can be used to treat SVT by slowing conduction through the AV node. However, they should be avoided in patients with a structurally normal heart like this patient due to the risk of hypotension. Amiodarone and propafenone class III antiarrhythmics can be used to treat SVT but are not first line options. Metoprolol a beta blocker can help control the ventricular rate in SVT but does not terminate SVT.Adenosine is the preferred agent to terminate SVT as it blocks AV nodal conduction. It has a rapid onset and short duration of action.D: Adenosine 