In response to the patient's query about how to know whether drugs are safe, the nurse explains that all medications undergo rigorous scientific testing controlled by what organization?
Drug Enforcement Agency (DEA).
Joint Commission on Accreditation of Healthcare Organizations (JCAHO).
Centers for Disease and Control Prevention.
Food and Drug Administration (FDA). . .
The Correct Answer is D
Choice A rationale
The Drug Enforcement Agency (DEA) primarily focuses on the enforcement of controlled substances laws and regulations, not the approval and testing of medications.
Choice B rationale
The Joint Commission on Accreditation of Healthcare Organizations (JCAHO) accredits and certifies healthcare organizations and programs, but it does not control medication testing.
Choice C rationale
The Centers for Disease Control and Prevention (CDC) focuses on public health and disease prevention, not the scientific testing of medications.
Choice D rationale
The Food and Drug Administration (FDA) is responsible for protecting public health by ensuring the safety, efficacy, and security of human and veterinary drugs, biological products, and medical devices through rigorous scientific testing. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Weight-bearing exercises are beneficial for cardiovascular health and bone density, and substituting them with yoga may not address the underlying factors contributing to hypertension.
Choice B rationale
Decreased fluid intake is not generally recommended as it can lead to dehydration, which may negatively impact blood pressure. Increased potassium intake is beneficial, but not reducing fluid intake.
Choice C rationale
Stress reduction is indeed beneficial for managing hypertension, but increased protein intake is not specifically indicated for lowering blood pressure and may have other health implications.
Choice D rationale
Weight reduction and decreased sodium intake are well-established lifestyle changes for managing hypertension. Reducing sodium helps lower blood pressure, and weight loss reduces the strain on the cardiovascular system.
Correct Answer is D
Explanation
Choice A rationale
Magnesium plays a role in various cellular functions, including enzyme activity and muscle contraction, but it does not directly inactivate troponin to enable actin and myosin interaction.
Choice B rationale
Sodium is essential for action potential generation and nerve impulse transmission but does not directly influence troponin activity or muscle contraction through actin and myosin bridge formation.
Choice C rationale
Potassium is critical for maintaining cellular resting membrane potential and repolarization of cells but does not play a direct role in inactivating troponin to facilitate muscle contraction.
Choice D rationale
Calcium is the electrolyte that inactivates troponin, allowing actin and myosin to form cross-bridges and contract muscle fibers. Calcium binds to troponin, causing a conformational change that exposes binding sites for myosin on actin filaments.
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