A 58-Year-Old Man Comes to the Emergency Department with a 1-Day

question 234

Multiple Choice

A 58-year-old man comes to the emergency department with a 1-day history of fever, headache, and vomiting.  He underwent kidney transplantation last year.  His temperature is 39.4 C (103 F) , blood pressure is 130/80 mm Hg, pulse is 98/min, and respirations are 16/min.  Neck stiffness is present on physical examination.  Cerebrospinal fluid (CSF) results are as follows: Gram-positive rods with tumbling motility at room temperature are seen on CSF microscopy.  How was this patient's infection most likely transmitted?

• A)Arthropod bite
• B)Contaminated food
• C)Needlestick
• D)Respiratory droplets
• E)Unprotected sex

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Definitions:

Perfectly Competitive

Describes a market structure where many firms sell identical products, there are no barriers to entry or exit, and all firms are price takers.

Excess Capacity

A situation where a firm is producing at a lower scale of output than it has been designed for, leading to inefficiencies.

Average Total Costs

The total costs of production divided by the number of units produced, representing the cost per unit.

Marginal Revenue Curve

A graphical representation showing how marginal revenue varies as output varies.