TCRN Practice Exam 2025 – Complete Prep for Your Test

Question: 1 / 400

Where is the petechial rash associated with fat embolism syndrome most prominent?

On the face and lower back

On the chest and axilla

In fat embolism syndrome, the petechial rash is most prominently observed on the chest and axilla. This presentation is significant due to the pathophysiology of fat embolism, where fat globules enter the bloodstream and can lodge in small blood vessels, particularly affecting the skin and leading to the characteristic rash. The chest and axilla are common anatomical sites for these petechial lesions because of the vascular supply and the tendency for emboli to become trapped in the dermal capillaries of these areas.

The presence of the rash in these regions may serve as a helpful clinical indicator in diagnosing fat embolism syndrome, especially in patients who have recent fractures or orthopedic surgery. Locations such as the face and lower back, solely the conjunctiva, or the soles of the feet are less commonly associated with this condition, making the chest and axilla the correct area to highlight regarding the petechial rash's prominence.

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Only on the conjunctiva

On the soles of the feet

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