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?

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. .

Choice A rationale

Improved mental status can be a sign of better overall health but is not a specific indicator of improved heart failure status.

Choice B rationale

Using fewer pillows at night indicates reduced orthopnea, a common symptom of heart failure, suggesting that the patient’s heart failure status has improved.

Choice C rationale

Increased skin turgor indicates improved hydration status but is not a specific measure of heart failure improvement.

Choice D rationale

Heart rate regularity is important but does not directly indicate improved heart failure status.