Final answer:
Pressure ulcers can develop in both the upper and lower extremities, but certain factors make one more vulnerable than the other. Factors such as bony prominences and constant friction make the upper extremities more susceptible, while prolonged sitting or lying down and reduced blood flow increase the risk in the lower extremities.
Step-by-step explanation:
When it comes to pressure ulcers, both the upper and lower extremities can be vulnerable. However, certain factors can make one more susceptible than the other.
For example, the upper extremities, such as the elbows and heels of the hands, are more vulnerable to pressure due to their bony prominences and constant friction against surfaces. On the other hand, the lower extremities, like the sacrum and heels, are at a higher risk due to prolonged periods of sitting or lying down, reduced blood flow, and the presence of moisture.
Overall, it is essential to maintain good circulation, hygiene, and regular position changes to prevent pressure ulcers from developing in both the upper and lower extremities.