A 32-Year-Old Man Comes to the Emergency Department with Chest

question 382

Multiple Choice

A 32-year-old man comes to the emergency department with chest pain that started earlier in the day.  The pain is midline and sharp and increases with deep breaths but decreases when the patient leans forward.  He had a mild respiratory illness a week ago.  Other medical history is unremarkable.  The patient is a lifetime nonsmoker and has no family history of early-onset heart attack, sudden death, or cardiomyopathy.  Blood pressure is 120/70 mm Hg and pulse is 110/min and regular.  Which of the following physical examination findings is most expected in this patient?

• A)Friction rub
• B)Kussmaul sign
• C)Pericardial knock
• D)Pulsus paradoxus
• E)S3

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Definitions:

High-low Method

A technique used in cost accounting to estimate variable and fixed costs based on the highest and lowest levels of activity.

Fixed Cost

Expenses that do not change regardless of the production volume, including rent, salaries, and insurance premiums.

Machine Hours

A measure of the amount of time a machine is operated, used in costing and operational efficiency calculations.

Committed Fixed Costs

Long-term fixed costs that cannot be easily altered in the short run, such as leases or contracts.