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A 66-Year-Old Man with Poorly Controlled Type 2 Diabetes Is

question 299

Multiple Choice

A 66-year-old man with poorly controlled type 2 diabetes is admitted to the hospital due to a 2-day history of fever and confusion.  Blood pressure is 110/50 mm Hg.  Pulse oximetry shows an oxygen saturation of 97% on room air.  Examination reveals warm extremities with full peripheral pulses, an infected neuropathic foot ulcer with surrounding cellulitis, and normal lung sounds.  A central venous catheter terminating in the superior vena cava is placed.  Blood aspirated from the catheter appears red.  Blood gas analysis of this venous sample reveals an oxygen saturation of 87% (normal: 65%-70%) , and lactate is moderately elevated.  Which of the following is the most likely cause of this patient's abnormal blood gas findings?


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Set The Agenda

A process of determining the topics, goals, or priorities to be addressed or pursued, often in meetings, projects, or negotiations.

Meaningful Manner

A way that is significant or purposeful, often referring to actions or communications that have a positive and impactful connotation.

Encounter

An unexpected or casual meeting with someone or something.

First Counseling Session

The initial meeting between a counselor and client, often focused on assessment, rapport building, and goal setting.

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