The Patient Is Admitted with Shortness of Breath and Chest

question 14

Multiple Choice

The patient is admitted with shortness of breath and chest discomfort.Which of the following laboratory values could account for the patient's symptoms?

• A) Hemoglobin level of 8.0
• B) Hematocrit level of 45%
• C) Red blood cell count of 5.0 million/mm³
• D) Pulse oximetry of 90%

---

Definitions:

Elder Sleep Phase Syndrome

A disorder characterized by advanced sleep timing, where individuals feel the need to go to sleep early in the evening and wake up unusually early.

Delayed Sleep Phase Syndrome

This syndrome is a circadian rhythm disorder where an individual's sleep is delayed by two or more hours, causing difficulty in waking up at conventional times.

Circadian Rhythms

Biological processes that display an endogenous, entrainable oscillation of about 24 hours, regulating the sleep-wake cycle among other bodily functions.

Advanced Sleep Phase Syndrome

A circadian rhythm disorder characterized by earlier than desired sleep onset and wake times, often resulting in evening sleepiness and morning alertness.