A nurse is reinforcing teaching about the side effects of metoprolol. Which of the following client statements indicates an understanding of the teaching?

Choice A reason: A space heater 5 feet from a bed is relatively safe if unobstructed, not a leading fire cause. Scientifically, heaters rank lower than smoking, as ignition requires closer flammable contact, making this less statistically significant per fire safety data.

Choice B reason: Smoking in bed is a top cause of residential fires, as embers easily ignite bedding. Scientifically, NFPA data show it’s a leading ignition source due to direct fuel contact, causing rapid flame spread, making it a critical hazard to highlight.

Choice C reason: Leaving the stove on causes kitchen fires, but smoking surpasses it in residential fatalities. Scientifically, unattended cooking ranks high, yet smoking’s bedroom context increases risk of sleeping victims, amplifying danger per fire incidence studies.

Choice D reason: Lack of smoke detectors increases fire deaths, not ignition. It’s a detection failure, not a cause. Scientifically, this affects outcomes, not initiation, making it irrelevant to identifying the leading hazard source per fire safety causation statistics.

Choice A reason: Furosemide, a diuretic, increases urine output, reducing fluid overload in heart failure. This relieves pulmonary edema, showing the drug’s effectiveness clearly.

Choice B reason: Decreased hemoglobin isn’t tied to furosemide’s action; it reflects anemia, not fluid status. It doesn’t indicate diuretic efficacy in heart failure management.

Choice C reason: Weight gain signals fluid retention, opposite furosemide’s goal. Effective diuresis reduces weight, so this suggests treatment failure, not success.

Choice D reason: Decreased BUN may occur, but it’s not a primary furosemide marker. Urine output directly measures diuretic effect, making this less indicative.