Which statement indicates that the nurse understands what the half-life of a drug means?
Drugs with a short half-life have a greater risk for toxicity
Half-life is not affected by renal or hepatic function
if a medication has a long half-life. dosage times can be longer intervals & the drug remains effective
Half of the effective portion of the drug is metabolized by the liver
The Correct Answer is C
C. The half-life of a drug refers to the time it takes for the concentration of the drug in the bloodstream to be reduced by half. If a medication has a long half-life, it means that it stays in the body for a longer period before being eliminated. This allows for less frequent dosing intervals while still maintaining therapeutic effectiveness.
A. Drugs with a short half-life are typically cleared from the body more quickly. While they may require more frequent dosing to maintain therapeutic levels, they do not necessarily have a greater risk for toxicity compared to drugs with longer half-lives. In fact, drugs with longer half-lives can accumulate in the body over time, potentially increasing the risk of toxicity.
B. The half-life of a drug can be significantly influenced by renal (kidney) and hepatic (liver) function. Impaired renal or hepatic function can prolong the half-life of a drug, leading to slower elimination and potentially increased risk of adverse effects.
D. This statement describes the concept of drug metabolism rather than the half-life. Drug metabolism refers to the biochemical alteration of drugs by enzymes, often occurring in the liver. The half-life, on the other hand, specifically relates to the elimination of the drug from the body.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","E"]
Explanation
A. External rotation of the hip involves rotating the thigh outward away from the midline of the body. This movement occurs in the hip joint. External rotation is a component of hip range of motion.
B. Extension of the hip involves moving the thigh backward, straightening the leg from a flexed position. This movement also occurs in the hip joint. Extension is part of the hip's range of motion.
C. Adduction of the hip involves moving the thigh toward or across the midline of the body. It brings the leg closer to the midline. Adduction is another movement that is part of the hip's range of motion.
E. Flexion of the hip involves bringing the thigh toward the abdomen or bending the leg. It is a movement where the angle between the thigh and the abdomen decreases. Flexion is a fundamental movement of the hip joint.
D. Supination is a movement primarily associated with the forearm and hand, involving turning the palm upward or facing forward. It is not a movement of the hip joint. Supination is not correct in the context of hip range of motion.
Correct Answer is D
Explanation
D. This is the most appropriate goal for a client experiencing diarrhea. Diarrhea is characterized by loose or watery stools, and the goal of treatment is to restore normal stool consistency. This goal focuses on improving the symptoms and resolving the underlying cause of diarrhea, whether it's due to infection, dietary factors, or other reasons.
A. "Defecating regularly" does not necessarily imply improvement in diarrhea symptoms or resolution of the underlying cause. It is vague and does not provide a clear target related to diarrhea management.
B. Increasing ingestion of fruits may be beneficial for some individuals as fruits contain fiber and fluids that can help regulate bowel movements and maintain hydration. However, certain fruits high in fiber (e.g., apples, pears) may exacerbate diarrhea in some cases. This goal should be tailored based on the individual's tolerance and specific dietary needs.
C. This goal is not appropriate for managing diarrhea. Diarrhea leads to fluid loss and dehydration, so limiting fluid intake can worsen dehydration and electrolyte imbalances. Adequate fluid intake is crucial to replace lost fluids and maintain hydration during episodes of diarrhea.
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