Correct Answer: B

Rationale: The correct answer is B: Actual nursing diagnosis. An actual nursing diagnosis is validated by the presence of major defining characteristics, such as signs and symptoms exhibited by the patient. This helps in identifying the specific health issues that the patient is currently experiencing. In contrast, a risk nursing diagnosis is focused on potential health problems that the patient may develop in the future. Possible nursing diagnosis involves uncertain or unclear health issues that require further assessment. Wellness diagnosis is aimed at enhancing health and promoting well-being, rather than addressing existing health problems. Therefore, the presence of major defining characteristics is crucial in confirming an actual nursing diagnosis.

Correct Answer: A

Rationale: The correct answer is A. Standard precautions include wearing gloves when there is a potential for contact with blood or body fluids. Emptying a bedpan involves contact with bodily fluids, thus gloves are necessary to prevent exposure to pathogens. Choice B is incorrect because wearing a gown and protective eyewear is not necessary for obtaining a urine specimen via catheterization unless there is a risk of splashing or spraying of fluids. Choice C is incorrect as needles should always be disposed of in a proper sharps container with the cap secured to prevent accidental needlestick injuries. Choice D is incorrect because applying eyedrops does not involve contact with blood or body fluids, so wearing gloves is not necessary according to standard precautions.

Correct Answer: A

Rationale: The correct answer is A: Facial tenderness. Sinus infections commonly present with facial tenderness due to the inflammation and pressure within the sinuses. This symptom is often accompanied by pain or pressure around the eyes, cheeks, and forehead. Photophobia (B) is more commonly associated with conditions like migraines or meningitis. Chest pain (C) is not a typical symptom of a sinus infection. Ear drainage (D) is more indicative of an ear infection rather than a sinus infection.

Correct Answer: B

Rationale: The correct answer is B: Block beta stimulation in the heart. Propranolol is a beta-blocker that works by blocking the beta receptors in the heart, which reduces the heart's workload and oxygen demand, making it an effective treatment for angina. By blocking beta stimulation, propranolol helps to decrease heart rate, blood pressure, and myocardial contractility. This ultimately improves oxygen supply to the heart muscle. Explanation for other choices: A: Act as a vasoconstrictor - Propranolol does not act as a vasoconstrictor; it actually can cause vasodilation in some cases. C: Act as a vasodilator - Propranolol is not primarily a vasodilator; its main action is to block beta stimulation in the heart. D: Increase the heart rate - Propranolol actually decreases heart rate by blocking beta receptors in the heart.

Correct Answer: C

Rationale: The normal range of hemoglobin in adult blood is typically between 12-18 g/dL. This range is the most common and widely accepted range based on clinical guidelines and research studies. Hemoglobin levels outside this range may indicate anemia or other health conditions. Choice A (7-11 mg) is too low for normal hemoglobin levels in adults and indicates severe anemia. Choice B (14-20 mg) is slightly higher and could be normal for some individuals, but generally, 12-18 g/dL is the standard range. Choice D (20-26 mg) is too high and may indicate dehydration or other medical conditions.