A 60-Year-Old Man with a Known History of Chronic Obstructive

question 95

Multiple Choice

A 60-year-old man with a known history of chronic obstructive pulmonary disease is brough to the emergency department due to chest palpitation and lightheadeness. He has a histroy of multiple episodes of intermittent chest palpitations. His only medication is a tiotropium-formoterol inhaler. His pulse is 140/min and irregular. respiration is 17/min and blood pressure 118/72. Pulse oximetry on room air shows an oxygen saturation of 96%. Chest examination reveals no murmurs and the lungs are clear on auscultation. There is trace peripheral edema. Cardiac rhythm strip obtained in the emergency department is shown in the exhibit.
Aberrant electrical activity in which of the following anatomic structures is the most likely trigger for this patient's current condition?

• A)Crista terminalis
• B)Papillary muscles
• C)Pulmonary veins
• D)Right ventricular outflow tract
• E)Sinoatrial node
• F)Tricuspid valve annulus

---

Definitions:

Strenuous Exercise

Physical activity requiring significant effort and energy, often improving strength and endurance.

Getting Away

The act of taking a break or distancing oneself from a particular situation or environment, often for relaxation or mental health purposes.

Vacation

A period of time spent away from home or business in travel or recreation.

Psychological Disorder

A condition characterized by abnormal thoughts, feelings, or behaviors, profoundly impacting an individual's daily functioning and quality of life.