Certified Wound Ostomy Nurse (CWON) Practice Test

What is the normal water content percentage of the skin?

1. 15-20%

2. 5-10%

3. 10-15%

4. 20-25%

The correct answer is: 10-15%

The normal water content percentage of the skin typically ranges from 10-15%. This level of hydration is essential for maintaining skin elasticity, barrier function, and overall integrity. Skin acts as a barrier to protect underlying tissues, and sufficient water content is crucial for this function. The skin's water content can be influenced by various factors including age, environmental conditions, and skin health. As the skin becomes dehydrated, it can lead to compromised barrier function, increased permeability, and susceptibility to irritants and infections. Understanding the normal hydration levels helps healthcare professionals assess skin conditions and implement appropriate interventions for maintaining skin health. In contrast, other ranges provided in the choices do not accurately represent the typical moisture content found in healthy skin. A percentage below 10% suggests significant dryness that would be atypical for well-hydrated skin, while ranges above 15% may indicate excessive moisture, which can also lead to complications such as maceration. Hence, the selection of 10-15% as the normal water content reflects a state of healthy skin hydration.