ATI RN
Pathophysiology Final Exam
1. A nurse is teaching a young adult patient about oral contraceptives, which the patient will soon begin taking. The patient's primary concern is the effectiveness of the medication in preventing pregnancy. The nurse should teach the patient that oral contraceptives, when taken consistently, are how effective in preventing pregnancy?
- A. Between 96% and 98%
- B. Approximately 98.5%
- C. Highly effective, but partially dependent on genetic factors
- D. Nearly 100%
Correct answer: D
Rationale: When taken correctly, estrogen–progestin contraceptive preparations are nearly 100% effective in preventing pregnancy. Choices A, B, and C are incorrect. Choice A suggests a range below the actual effectiveness, choice B provides a specific percentage that is not accurate, and choice C introduces the concept of genetic factors which is not relevant to the effectiveness of oral contraceptives.
2. A nurse is caring for a client who has diabetes insipidus. Which of the following findings should the nurse expect?
- A. Weight gain
- B. Increased urine output
- C. Bradycardia
- D. Hyperactive bowel sounds
Correct answer: B
Rationale: Increased urine output is a key finding in clients with diabetes insipidus due to a deficiency of antidiuretic hormone. Weight gain (choice A) is not expected in diabetes insipidus as it is a condition characterized by excessive thirst and urination leading to fluid loss. Bradycardia (choice C) and hyperactive bowel sounds (choice D) are not typically associated with diabetes insipidus.
3. In the treatment of a patient with obsessive-compulsive disorder (OCD) using cognitive-behavioral therapy (CBT), which specific type of CBT is most effective?
- A. Dialectical behavior therapy
- B. Exposure and response prevention
- C. Interpersonal therapy
- D. Supportive therapy
Correct answer: B
Rationale: Exposure and response prevention (ERP) is a specific type of CBT that is considered the most effective treatment for OCD. ERP involves exposing the individual to anxiety-provoking stimuli and preventing the usual compulsive responses, leading to a decreased anxiety response over time. This type of therapy helps individuals learn to tolerate the anxiety triggered by obsessions without engaging in compulsions, ultimately reducing OCD symptoms. Choices A, C, and D are incorrect. Dialectical behavior therapy (Choice A) is more commonly used for treating conditions like borderline personality disorder, not OCD. Interpersonal therapy (Choice C) focuses on improving interpersonal relationships and communication skills, which is not the primary approach for OCD. Supportive therapy (Choice D) provides emotional support and guidance but is not as effective as ERP in treating OCD.
4. What is the most important assessment for a patient with respiratory distress?
- A. Monitor oxygen saturation
- B. Check for abnormal breath sounds
- C. Check for pitting edema
- D. Perform a neurological exam
Correct answer: A
Rationale: Monitoring oxygen saturation is crucial in assessing a patient with respiratory distress because it helps determine if the patient is receiving adequate oxygen. Oxygen saturation levels provide immediate feedback on the efficiency of oxygen delivery to the tissues. Checking for abnormal breath sounds (Choice B) is relevant in respiratory assessments, but it is secondary to assessing oxygen saturation. Pitting edema (Choice C) and performing a neurological exam (Choice D) are not directly related to assessing respiratory distress and are not the primary focus when managing a patient with breathing difficulties.
5. When reviewing the arterial blood gas values for a client, a nurse notes a pH of 7.32, PaCO2 of 48 mm Hg, and HCO3 of 23 mEq/L. What does this indicate about the acid-base balance?
- A. Respiratory acidosis
- B. Respiratory alkalosis
- C. Metabolic acidosis
- D. Metabolic alkalosis
Correct answer: Respiratory acidosis
Rationale: The given values suggest respiratory acidosis. In respiratory acidosis, the pH is low (<7.35), PaCO2 is high (>45 mm Hg), and the HCO3 is normal or slightly elevated. In this scenario, the low pH (7.32) and high PaCO2 (48 mm Hg) indicate respiratory acidosis, where there is an excess of carbon dioxide in the blood, leading to acidification of the body fluids.
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