HESI 799 RN Exit Exam Capstone

Correct Answer: B

Rationale: Prothrombin time (PT) is the correct laboratory value to monitor to assess the therapeutic effect of warfarin. Warfarin works by inhibiting clotting factors, and PT measures the time it takes for blood to clot. Monitoring PT helps ensure that the medication is working effectively to prevent clot formation without causing excessive bleeding. Platelet count (Choice A) is not specific to warfarin therapy and assesses the number of platelets in the blood. White blood cell count (Choice C) and hemoglobin level (Choice D) are not directly related to monitoring the therapeutic effect of warfarin.

Correct Answer: B

Rationale: Corrected Rationale: Prolonged exposure to high oxygen concentrations can disrupt the production of surfactant in the lungs, leading to atelectasis and other lung complications. Surfactant is essential for maintaining lung compliance and preventing alveolar collapse. Reduced cardiac output (Choice A) is not directly associated with prolonged oxygen exposure. Hyperactivity of alveoli (Choice C) is not a recognized consequence of high oxygen levels. Increased oxygen carrying capacity (Choice D) is not a pathophysiological effect of prolonged high oxygen exposure.

Correct Answer: B

Rationale: The correct answer is B: White blood cell count and sputum culture. Monitoring white blood cell count and sputum cultures is essential to assess the effectiveness of the antibiotic in treating the respiratory tract infection. Changes in white blood cell count can indicate the body's response to infection, while sputum cultures help determine if the antibiotic is targeting the specific pathogens causing the infection. Choices A, C, and D are incorrect because platelet count, red blood cell count, hemoglobin A1c, glucose tolerance test, arterial blood gases, and serum electrolytes are not directly related to evaluating the effectiveness of an antibiotic in treating a respiratory tract infection.

Correct Answer: A

Rationale: In a post-tonsillectomy and adenoidectomy patient, frequent swallowing is a crucial assessment that requires immediate attention by the nurse. Frequent swallowing can indicate bleeding, a complication that needs urgent intervention. Coughing may be expected due to irritation from the surgery but is not as concerning as potential bleeding. Slow breathing and tachycardia are not typically immediate concerns following this type of surgery.

Correct Answer: B

Rationale: Vertigo is the primary symptom of Meniere's disease and can lead to falls and other injuries. Ensuring safety and addressing the risk of injury is the nurse's top priority. While social isolation and impaired hearing are significant concerns associated with Meniere's disease, the immediate danger of falls due to vertigo takes precedence in the plan of care. Impaired verbal communication, although important, is not as urgent as preventing injuries caused by vertigo.