Correct Answer: C

Rationale: In this scenario, the nurse should note the location of the mole and follow up with the attending physician through the medical record and a phone call. This action is appropriate because a mole with irregular edges and a bluish color raises concern for melanoma, a type of skin cancer. Recommending a dermatological consult (Choice A) might delay the evaluation and management of the mole. Contacting the physician via telephone (Choice B) may not provide a documented record of the observation. Removing the mole without proper evaluation (Choice D) could be dangerous and is not within the nurse's scope of practice.

Correct Answer: D

Rationale: The correct answer is to teach family and visitors handwashing techniques. Any client on chemotherapy should have good infection control measures in place, such as handwashing by all who they encounter. Placing the child in a negative pressure isolation room (Choice A) is not necessary unless specifically indicated for a certain condition. Administering prophylactic IV antibiotics (Choice B) may not be part of the standard care plan for a child with leukemia receiving chemotherapy. Avoiding high protein food intake (Choice C) is not directly related to infection control and may not be necessary unless there are specific dietary restrictions.

Correct Answer: A

Rationale: The correct answer is wearing clean gloves while performing a heel stick on an infant. Standard precautions require the use of gloves when there is a risk of exposure to blood or body fluids. Clean gloves are suitable for this task as they provide adequate protection without being sterile. Choice B is incorrect because wearing the same gloves for different clients can lead to cross-contamination, violating standard precautions. Choice C is incorrect as sterile gloves are usually not required for changing a urine bag and nasogastric canister unless a specific aseptic technique is indicated; standard precautions do not demand sterile gloves for such tasks. Choice D is incorrect as donning a gown is not necessary for checking an IV pump unless there is a risk of exposure to bodily fluids that would necessitate full-body protection, which is not indicated in this scenario.

Correct Answer: C

Rationale: In a tension pneumothorax, the trachea deviates to the unaffected side due to increased pressure in the affected pleural space, causing respiratory distress. Dyspnea is a hallmark symptom as the lung on the affected side collapses, leading to difficulty in breathing. Sudden hypertension and bradycardia (Choice A) are not typical findings of tension pneumothorax. Productive cough with yellow mucus (Choice B) is more suggestive of respiratory infections rather than a tension pneumothorax. Sudden development of profuse hemoptysis and weakness (Choice D) is not characteristic of tension pneumothorax presentation.

Correct Answer: B

Rationale: The correct answer is B: Denial. Individuals with alcohol addiction often deny that they have a drinking problem and may become defensive when confronted about it. This sense of denial can be a significant barrier to seeking treatment. Co-dependency, referred to in choice A, is a relationship dynamic and is not the primary reason for avoiding treatment. Depression, as mentioned in choice C, is a common co-occurring condition with alcohol addiction but is not typically the main factor preventing treatment-seeking. Stigma, as in choice D, can act as a deterrent, but denial of the problem itself is usually the primary obstacle to seeking help.