A nurse is calculating the BMI of a client who has a weight of 75 kg (165.3 lb) and a height of 1.8 m (5 ft 9 in). Which of the following values should the nurse calculate as the client's BMI?
42
28
32
24
The Correct Answer is D
Rationale:
A. 42: A BMI of 42 falls in the category of class III (severe) obesity. This would only occur if the client's weight were significantly higher than 75 kg for a height of 1.8 m.
B. 28: A BMI of 28 indicates overweight status. At 75 kg and 1.8 m tall, the client does not meet the weight requirement for a BMI this high, as 28 would correspond to a weight closer to 91 kg.
C. 32: A BMI of 32 falls in the obesity range. For someone who is 1.8 m tall, a BMI of 32 would require a weight of about 104 kg, which is much higher than the client’s actual weight of 75 kg.
D. 24: The BMI is calculated as weight (kg) divided by height (m²). Using the formula:
BMI = 75 / (1.8 × 1.8) = 75 / 3.24 ≈ 23.15, which rounds to 24, placing the client in the normal weight range.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","D","E"]
Explanation
Rationale:
A. Polydipsia: Polydipsia, or excessive thirst, is commonly associated with hyperglycemia due to osmotic diuresis caused by high blood glucose levels. It is not a typical feature of hypoglycemia.
B. Tremors: Tremors are a hallmark symptom of hypoglycemia. They result from the body's adrenergic (sympathetic) response to low blood glucose levels, which triggers the release of epinephrine to raise glucose.
C. Acetone breath odor: A fruity or acetone breath odor is associated with diabetic ketoacidosis, a complication of hyperglycemia, not hypoglycemia. It indicates ketone buildup due to fat metabolism in the absence of insulin.
D. Inability to concentrate: Cognitive impairment, such as confusion or difficulty concentrating, is a neurological symptom of hypoglycemia. The brain relies heavily on glucose, and low levels affect its function quickly.
E. Diaphoresis: Sweating is a common autonomic symptom of hypoglycemia due to activation of the sympathetic nervous system. It often occurs early in a hypoglycemic episode and is a critical sign to monitor.
Correct Answer is C
Explanation
Rationale:
A. Prolonged QT interval: This is not a typical sign of morphine toxicity. QT prolongation is more commonly associated with certain antipsychotics, antiarrhythmics, or methadone, not opioids like morphine.
B. Fluid retention: Morphine does not typically cause fluid retention. While it may contribute to urinary retention, generalized fluid accumulation is not characteristic of opioid toxicity and may point to other causes like heart or renal failure.
C. Bradypnea: Respiratory depression, including bradypnea, is the hallmark sign of opioid toxicity. Morphine suppresses the brainstem’s respiratory centers, reducing respiratory rate and depth, which can become life-threatening without intervention.
D. Hyperactive deep tendon reflexes: Opioids tend to cause central nervous system depression, which would more likely lead to diminished reflexes. Hyperactive reflexes are not associated with morphine toxicity and may suggest a different neurological issue.
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