A nurse is discussing weight loss with a client who is concerned about losing 6.8 kg (15 lb) from an original weight of 90.7 kg (200 lb). The nurse should identify the weight loss as which of the following total percentages?
A. 8.1%
B. 15.9%
C. 13.3%
D. 7.5%
The Correct answer and Explanation is:
To calculate the percentage of weight loss, we can use the formula:
[
\text{Percentage of Weight Loss} = \left( \frac{\text{Weight Loss}}{\text{Original Weight}} \right) \times 100
]
In this scenario, the original weight of the client is 90.7 kg, and the weight loss is 6.8 kg. Plugging these values into the formula gives:
[
\text{Percentage of Weight Loss} = \left( \frac{6.8 \, \text{kg}}{90.7 \, \text{kg}} \right) \times 100
]
Calculating the fraction:
[
\frac{6.8}{90.7} \approx 0.0749
]
Next, we multiply by 100 to convert this decimal into a percentage:
[
0.0749 \times 100 \approx 7.49\%
]
Rounding this to one decimal place, we get approximately 7.5%.
Thus, the correct answer is D. 7.5%.
Explanation:
Weight loss percentage is a valuable metric for assessing a client’s progress toward their health goals. It helps provide context for how significant the weight loss is in relation to their original weight. In this case, the client started at 90.7 kg and has lost 6.8 kg.
Understanding the percentage of weight loss is essential in nursing and health care because it can indicate the effectiveness of weight management programs and help motivate clients. A weight loss of 5-10% is often seen as beneficial for improving health markers, such as blood pressure, blood glucose levels, and cholesterol.
In clinical practice, nurses should not only calculate weight loss percentages but also discuss realistic and healthy weight loss goals with their clients. A safe rate of weight loss is generally considered to be 0.5 to 1 kg (1 to 2 pounds) per week, equating to about 1-2% of body weight. This helps ensure that weight loss is sustainable and reduces the risk of regaining the weight. Additionally, supporting clients with lifestyle changes, including dietary modifications and increased physical activity, is crucial for long-term success.