A nurse is preparing to administer labetalol 40 mg IV to a client. Available is labetalol 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["8"]
Calculation:
Desired dose = 40 mg.
Available concentration = 5 mg/mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 40 mg / 5 mg/mL
= 8 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Rationale:
A. The client advances the walker and takes a step towards it: This is the correct technique for using a walker. The client should move the walker a short distance ahead, then step into it one foot at a time, maintaining balance and stability throughout the motion.
B. The client grasps the walker by the hand grips on the upper bars: Holding the walker by its designated hand grips is safe and appropriate. This ensures proper control of the device and minimizes the risk of slipping or tipping.
C. The client lifts the walker as it is moved forward: Walkers should be lifted and placed rather than dragged to maintain balance and prevent tripping. This action demonstrates proper use and helps maintain floor contact with all legs of the walker.
D. The client takes multiple steps while holding the walker: Taking multiple steps without first advancing the walker compromises balance and increases the risk of falling. The correct method involves moving the walker first, then taking one step at a time toward it.
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.
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