Correct Answer: A

Rationale: Blurred vision is a common symptom of glaucoma due to increased intraocular pressure damaging the optic nerve, affecting visual clarity.
Choice B is incorrect because glaucoma is characterized by increased intraocular pressure, not decreased.
Choice C is incorrect because corneas may appear hazy or cloudy in advanced glaucoma, not always clear.
Choice D is incorrect because peripheral vision loss (tunnel vision) is a hallmark of glaucoma, not its absence.

Correct Answer: D

Rationale: Expecting a mild headache as a side effect is correct, as nitroglycerin causes vasodilation, which can lead to headaches; clients should be informed this is common and manageable with acetaminophen if needed.
Choice A is incorrect because, while taking up to three doses 5 minutes apart is correct, the nurse should also instruct the client to seek emergency care if pain persists after three doses.
Choice B is incorrect because nitroglycerin should be stored in a cool, dark place in its original container to maintain potency, not a warm, dry place.
Choice C is incorrect because nitroglycerin sublingual tablets are placed under the tongue to dissolve, not swallowed, for rapid absorption.

Correct Answer: A

Rationale: Monitoring white blood cell count is critical during chemotherapy due to immunosuppression risk. Potassium, glucose, and creatinine are less directly affected.

Correct Answer: A

Rationale: Taking combined oral contraceptives at the same time each day helps maintain consistent hormone levels and maximizes effectiveness in preventing pregnancy.
Choice B is wrong because a backup method of contraception is recommended for the first 7 days only if the pills are started after the first day of the menstrual cycle; if started on the first day, no backup is needed.
Choice C is wrong because headaches are a common side effect, but stopping the pills abruptly is not advised; the client should consult the provider if headaches are severe or persistent.
Choice D is wrong because taking an extra pill after missing a dose can increase the risk of side effects; the correct action depends on the timing and number of missed pills, typically involving taking the missed pill as soon as remembered and using a backup method.

Correct Answer: C

Rationale:
Choice A is wrong because placing a yellow bracelet on a client who is at risk for falls is not malpractice, but rather a safety measure. A yellow bracelet indicates that the client needs assistance with mobility and should not be left alone. This is a common practice in many health care facilities to prevent falls and injuries.
Choice B is wrong because leaving a nasogastric tube clamped after administering oral medication is not malpractice, but rather a mistake. A nasogastric tube is a tube that goes through the nose and into the stomach to deliver nutrition or medication. It should be unclamped after giving oral medication to allow the medication to enter the stomach and prevent reflux or aspiration. However, this error does not rise to the level of malpractice unless it causes harm to the patient, such as vomiting, choking, or infection. This is because potassium is a medication that can cause cardiac arrest if given too quickly or in high doses. A nurse who administers potassium via IV bolus is not providing the standard of care that a similarly trained nurse would have offered under the same circumstances. This could result in harm or death to the patient.
Choice D is wrong because documenting communication with a provider in the progress notes of the client's medical record is not malpractice, but rather a good practice.