ATI PN Comprehensive Predictor 2020

Correct Answer: D

Rationale: The correct answer is 'Muscle weakness.' Hypokalemia is characterized by low potassium levels, which can lead to muscle weakness due to impaired muscle function. Choices A, B, and C are incorrect findings associated with other medical conditions and not typically expected in hypokalemia. Muscle stiffness is more commonly associated with conditions like tetany or muscle cramps, bradycardia is more commonly associated with issues like heart block or hypothyroidism, and hyperreflexia is more commonly seen in conditions like hyperthyroidism or spinal cord injuries.

Correct Answer: A

Rationale: The correct answer is A: Prostate-specific antigen (PSA). PSA is a marker specifically used for prostate cancer screening. Elevated levels of PSA can indicate prostate cancer or other prostate-related issues, prompting the need for further diagnostic investigations. Choices B, C, and D are not typically associated with prostate cancer screening. Human chorionic gonadotropin (hCG) is related to pregnancy, alpha-fetoprotein (AFP) is associated with liver and germ cell tumors, and carcinoembryonic antigen (CEA) is linked to colorectal cancer.

Correct Answer: A

Rationale: When assessing a patient with a suspected infection, it is crucial to monitor temperature and check for elevated white blood cells. Elevated temperature indicates a potential infection, and increased white blood cells are a sign of inflammation and the body's response to an infection. Monitoring blood pressure (choice B) and checking for fever (choice B) are not as specific indicators of infection as monitoring temperature and white blood cell count. Assessing changes in mental status and monitoring urine output (choice C) are important aspects of patient assessment but may not directly indicate a suspected infection. Administering antibiotics (choice D) should only be done after a confirmed diagnosis of a bacterial infection, as unnecessary antibiotic use can lead to antibiotic resistance and other adverse effects.

Correct Answer: C

Rationale: The correct answer is to suction the client when they show signs of irritability. Signs of irritability, such as restlessness or agitation, can indicate the need for suctioning in a client with a tracheostomy. This early indicator suggests that there may be an accumulation of secretions affecting the client's airway. Suctioning should be performed promptly to maintain a clear airway and prevent complications. Choices A, B, and D are incorrect because suctioning should be based on clinical signs and symptoms indicating the need for intervention, rather than a fixed schedule or specific vital sign parameters.

Correct Answer: B

Rationale: The correct answer is B: 'Wear shoes that fit properly.' In peripheral arterial disease (PAD), it is crucial to wear shoes that fit well to prevent foot injuries. Choice A is incorrect because applying lotion between the toes can increase the risk of infection. Choice C is incorrect since walking barefoot at home can lead to injuries, especially in individuals with PAD. Choice D is incorrect as applying ice to the feet daily can further reduce blood flow to the extremities, worsening the condition in PAD.