A 56-Year-Old Guy Who Has Been Experiencing Palpitations for Many

question 42

Multiple Choice

A 56-year-old guy who has been experiencing palpitations for many hours visits the emergency room. He has never had symptoms like this. The patient hasn't had syncope, lightheadedness, shortness of breath, or chest discomfort. On the weekends, he consumes booze, but not illegal substances. There is no history of heart disease in his family. The reading is 145/78 mm Hg. 40 kg/m² is the BMI. The exhibit displays an ECG. The patient is treated medically in the emergency department.  He is then taken to the electrophysiology laboratory for radiofrequency catheter ablation to terminate his arrhythmia.  The ablation procedure should create a conduction block through which of the following areas?

• A)Accessory pathway bypassing the atrioventricular node
• B)Area between the tricuspid valve and inferior vena cava in the right atrium
• C)Area in the right ventricular outflow tract
• D)Ostia of the pulmonary veins in the left atrium
• E)Slow pathway of the atrioventricular node

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