A 58-Year-Old Man with a History of Hypertension and Hyperlipidemia

question 4

Multiple Choice

A 58-year-old man with a history of hypertension and hyperlipidemia comes to the emergency department due to substernal chest pain that began 6 hours ago and has gradually worsened.  Blood pressure is 104/72 mm Hg and pulse is 88/min.  ECG shows normal sinus rhythm with ST-segment depression and T-wave inversion, and troponin levels are elevated.  The patient is diagnosed with non-ST-segment elevation myocardial infarction and admitted to the hospital for medical management, with coronary angiography scheduled the following morning.  That evening, telemetry monitoring shows a new Mobitz type 1 second-degree atrioventricular block.  Which of the following arteries was most likely obstructed during this patient's myocardial infarction?

• A)Left anterior descending
• B)Left circumflex
• C)Left main coronary
• D)Ramus intermedius
• E)Right coronary

---

Definitions:

Money Income

The total amount of monetary earnings or receipts accruing to an individual or household from various sources before any deductions like taxes.

Total Utility

The complete fulfillment experienced when a certain amount of products or services is consumed.

Utility Schedule

A utility schedule is a table that shows the relationship between quantities of a good or service consumed and the utility or satisfaction derived from that consumption.

Marginal Utility

The additional satisfaction or utility gained from consuming an extra unit of a good or service.