During a skin assessment, a client expresses concern about skin cancer. What findings should the nurse identify as a potential indication of a skin malignancy?

Correct Answer: A

Rationale: The correct answer is A: A mole with an asymmetrical appearance. Asymmetry is a key characteristic of potential skin malignancy. An asymmetrical mole does not have a uniform shape when divided in half. This irregularity raises suspicion for skin cancer. Choices B, C, and D are incorrect. A mole with a regular border (B) is more likely to be benign. A mole that is the same color throughout (C) is also a feature commonly seen in benign moles. Additionally, a mole smaller than 6mm in diameter (D) is not necessarily indicative of malignancy, as some melanomas can be smaller or larger than this size.

Correct Answer: A

Rationale: When auscultating the chest, normal breathing sounds are expected in a healthy individual. Wheezing is a high-pitched whistling sound that indicates narrowed airways and is often heard in conditions like asthma. Crackles are fine, crackling sounds heard on inspiration or expiration and are associated with conditions like pneumonia or heart failure. Stridor is a high-pitched, harsh sound heard during inspiration due to upper airway obstruction. Therefore, choices B, C, and D indicate abnormal respiratory findings, while choice A signifies normal breathing sounds.

Correct Answer: D

Rationale: Maintaining sterile technique when handling a central venous catheter is crucial in preventing infections. Changing the catheter dressing every 72 hours, while important for overall catheter care, does not directly address infection prevention. Flushing the catheter with heparin solution daily is essential for maintaining patency but does not primarily prevent infections. Ensuring the catheter is clamped when not in use is important for preventing air embolism but is not the most critical action to prevent infection. The most effective way to prevent infections is by strictly adhering to sterile techniques during catheter handling, which minimizes the risk of introducing pathogens into the catheter site.

Correct Answer: C

Rationale: The correct answer is C, 'Proximate cause.' Proximate cause establishes the link between the harm suffered and the negligent actions performed by the nurse. In a malpractice lawsuit, proving proximate cause is essential to demonstrate that the nurse's actions directly led to the harm experienced by the client. Choice A, 'Evidence,' is incorrect as evidence is the information presented to support or refute a claim, not specifically the link between harm and negligence. Choice B, 'Tort discovery,' is incorrect as it does not specifically refer to establishing the link between harm and negligence. Choice D, 'Common cause,' is incorrect as it does not capture the legal concept of proximate cause in establishing liability in malpractice cases.

Correct Answer: A

Rationale: The correct answer is A. Nasogastric suctioning can lead to hypovolemia due to the loss of gastric fluids. Chronic constipation and syndrome of inappropriate antidiuretic hormone (SIADH) are not typically associated with hypovolemia. A toxic dose of sodium bicarbonate antacids may lead to metabolic alkalosis, not hypovolemia.

Correct Answer: B

Rationale: In a client with chronic kidney disease, elevated serum potassium levels (hyperkalemia) are the most concerning finding. Hyperkalemia can lead to life-threatening cardiac dysrhythmias. Monitoring and managing serum potassium levels are crucial in patients with kidney disease to prevent severe complications. While elevated creatinine (Choice A) and BUN (Choice C) are indicative of impaired kidney function, hyperkalemia poses a more immediate threat to the client's health. Hemoglobin levels (Choice D) can be affected by chronic kidney disease but are not as acutely dangerous as severe hyperkalemia.

Correct Answer: C

Rationale: The correct answer is C: Prothrombin time (PT). Prothrombin time is monitored to assess the therapeutic response to warfarin therapy. Warfarin works by inhibiting vitamin K-dependent clotting factors, which prolongs the PT. Monitoring PT helps determine if the client's blood is clotting within the desired therapeutic range. Choices A, B, and D are incorrect because bleeding time, coagulation time, and partial thromboplastin time are not specifically used to monitor the therapeutic response to warfarin. Bleeding time assesses platelet function, coagulation time is a general term and not a specific test, and partial thromboplastin time is more relevant in monitoring heparin therapy, not warfarin.

Correct Answer: C

Rationale: A trochanter roll is the correct choice as it is used to prevent external rotation of the hips when the patient is in a supine position. Hand rolls (Choice A) are incorrect because they are used to prevent contractures of the fingers, wrist, and hand. A trapeze bar (Choice B) is not the correct option as it helps patients change positions in bed and aids with movement, not specifically for hip rotation. Hand-wrist splints (Choice D) are also incorrect as they are used to maintain the functional position of the wrist and hand, not to address hip rotation.

Correct Answer: B

Rationale: The correct answer is B. Advance directives specify the type of medical treatment a client wishes to receive or avoid in the event of a serious illness. Choice A is incorrect because advance directives do not allow the court to overrule a client's refusal of medical treatment; they empower the client to make their own healthcare decisions. Choice C is incorrect because advance directives do not permit a client to withhold medical information; they provide guidance on the client's treatment preferences. Choice D is incorrect because advance directives do not specifically address the actions of health care personnel in the emergency department; they focus on the client's treatment preferences in general.