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A 57-Year-Old Man Who Just Returned from a Cruise to the Bahamas

question 1039

Multiple Choice

A 57-year-old man who just returned from a cruise to the Bahamas comes to the emergency department with fever, nonproductive cough, and shortness of breath for the past 2 days. He has also had a headache, abdominal pain, and diarrhea for a day. The patient has a history of type 2 diabetes mellitus and has smoked a pack of cigarettes daily for 20 years. He does not use alcohol or illicit drugs. His temperature is 39.2 C (102.6 F) , blood pressure is 110/65 mm Hg, pulse is 80/min, and respirations are 18/min. The patient's pulse oximetry shows 97% on room air. Lung examination shows crackles bilaterally. The abdomen is soft and nontender. The patient seems confused at times during the examination. His serum glucose is normal; serum sodium is 128 mEq/L. Chest x-ray demonstrates bilateral interstitial infiltrates. He is admitted to the ward. Which of the following antibiotics should be given to this patient?

Definitions:

Controlled Studies

Experiments or observations designed with control groups and experimental groups to eliminate the effects of variables other than the independent variable.

Classical Psychoanalysis

A technique in psychology developed by Freud, focusing on uncovering unconscious motivations and early childhood influences on behavior.

Relational Models

Theories or frameworks that describe the types and dynamics of relationships between individuals or entities.

Drive Reduction

A motivational theory suggesting that behavior is driven by the need to reduce internal tension caused by unmet biological needs, such as hunger or thirst.