A 55-Year-Old Man Is Brought to the Emergency Department Due

question 187

Multiple Choice

A 55-year-old man is brought to the emergency department due to shortness of breath, productive cough, and confusion.  His wife mentions that last week he was diagnosed with the flu and his symptoms have progressively worsened.  Temperature is 39.4 C (103 F) , blood pressure is 80/50 mm Hg, pulse is 120/min, and respiratory rate is 22/min.  Pulse oximetry shows 86% on room air.  On physical examination, the patient is obtunded and in respiratory distress.  He is intubated, given a 2-L bolus of normal saline, and started on broad spectrum antibiotics after blood cultures are obtained.  A central line is placed to access a structure embryonically derived from the common cardinal veins.  This structure is represented by which of the following labels shown in the chest CT scan below?

• A)A
• B)B
• C)C
• D)D

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Definitions:

Grade 14

Could refer to a specific level or quality classification in a grading system, but needs additional context to define precisely in a specific field.

Pressing or Rolling Operation

A manufacturing process where metal is shaped by pressing or rolling, often used for forming sheets, plates, or profiles.

Fit Symbol

Symbols used in engineering to specify the type of fit between two mating parts; typically defines tolerance and type such as clearance or interference.

Thread Representation

A method in technical drawings to indicate the detailed characteristics of thread on a part, including major diameter, pitch, and thread form.