The nurse evaluates the effects of warfarin by monitoring what lab test?

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. .

Choice A rationale

Plaque formation in arteries does not start with platelets and fibrin.

Choice B rationale

Plaque begins with fatty streaks, which are the earliest signs of atherosclerosis and consist of lipid-laden cells in the arterial wall.

Choice C rationale

White blood cells are involved in the inflammatory process of atherosclerosis but do not represent the initial plaque formation.

Choice D rationale

Foam cells, which are lipid-laden macrophages, develop later in the process of plaque formation and contribute to the growth of atherosclerotic lesions. .