Question

Which information indicates the nurse has an accurate understanding of clients' total body water (TBW)? Select all that apply.

a) Body weight
b) Age
c) Gender
d) Serum electrolyte levels

Answer 1

A nurse's understanding of total body water (TBW) is reflected by their consideration of factors such as body weight, age, gender, and serum electrolyte levels. Hormones like aldosterone and ADH also play important roles in regulating body water levels.

Step-by-step explanation:

The information that indicates the nurse has an accurate understanding of clients' total body water (TBW) includes:

• Body weight: TBW is a percentage of a person's body weight, with variations according to age and body composition.
• Age: As a person ages, the percentage of TBW decreases.
• Gender: Generally, males have a higher percentage of TBW compared to females due to differences in body composition.
• Serum electrolyte levels: These levels provide insight into the body's fluid balance and can indicate whether TBW is within normal limits.

For instance, the hormone aldosterone influences the level of water in the body by regulating sodium and potassium levels. Additionally, ADH (antidiuretic hormone) plays a critical role in water balance by affecting the kidneys' ability to retain water. When administering fluids intravenously to a dehydrated patient, a solution that is isotonic with body fluids, such as saline, is typically used.