Correct Answer: A

Rationale: The correct answer is A. Shifting weight to the unaffected leg when descending stairs is crucial for maintaining balance and safety. This technique helps prevent falls and distributes weight appropriately. Choices B, C, and D are incorrect because using crutches to support the weight on the injured leg, leading with the injured leg when ascending stairs, and keeping crutches under the arms are all potentially unsafe practices that could lead to further injury or accidents.

Correct Answer: B

Rationale: To calculate the number of tablets needed, convert the prescribed dose of Seconal from grams to grains. Since 1 gram is equal to approximately 15.43 grains, 0.1 gram is roughly 1.543 grains. Given that each tablet contains 1.5 grains, administering 1 tablet (which is slightly more than the 1.543 grains needed) provides the correct dose of Seconal. Therefore, the LPN/LVN should plan to administer 1 tablet. Choice A (0.5 tablet) is incorrect as it would provide less than the required dose. Choice C (1.5 tablets) and Choice D (2 tablets) are incorrect as they would exceed the necessary dosage.

Correct Answer: D

Rationale: The correct answer is D: Tuberculosis. Coughing up blood (hemoptysis) is a key symptom of tuberculosis. Tuberculosis is a respiratory infection caused by the bacterium Mycobacterium tuberculosis. The other options are incorrect because an allergic reaction typically involves symptoms like itching, hives, or swelling, not coughing up blood. Ringworm is a fungal skin infection characterized by a red, circular rash, and systemic lupus erythematosus is an autoimmune disease that primarily affects joints and skin without causing hemoptysis.

Correct Answer: C

Rationale: The correct answer is C. Leaving a light on in the bathroom at night is important for an older adult with heart failure who is taking hydrochlorothiazide, a diuretic that can cause nocturia. This safety measure helps prevent falls during nighttime bathroom visits. Option A is incorrect because taking a hot bath before bed can increase the risk of falls due to potential dizziness. Option B does not directly relate to safety considerations but rather the timing of medication administration. Option D, weighing oneself once weekly, is important for monitoring fluid retention but does not address safety concerns related to nocturia and falls.

Correct Answer: B

Rationale: The correct way to take buccal medications is to insert the tablet between the cheek and gums where it will dissolve slowly. Option A is incorrect because buccal medications are not meant to be dissolved in water. Option C is incorrect as sublingual medications are placed under the tongue. Option D is incorrect because chewing a buccal tablet is not the correct administration method.