ATI RN
Final Exam Pathophysiology
1. A female patient is concerned about the side effects of oral contraceptives. What should the nurse explain as a common side effect?
- A. Increased energy levels
- B. Decreased libido
- C. Weight gain
- D. Hair loss
Correct answer: C
Rationale: The correct answer is C: Weight gain. Weight gain is a common side effect of oral contraceptives due to hormonal changes. It is essential for healthcare providers to inform patients about this possibility to manage expectations. Choice A, increased energy levels, is not a common side effect of oral contraceptives. Choice B, decreased libido, can be a side effect for some individuals but is not as common as weight gain. Choice D, hair loss, is not typically associated with oral contraceptives. Therefore, it is important for the nurse to address the patient's concerns by discussing the more prevalent side effects like weight gain.
2. How does influenza immunization produce immunity?
- A. The virus from the vaccine remains in the body until the end of the season
- B. An attenuated virus causes immune system suppression and triggers immunity
- C. The body identifies the virus and develops antibodies against the virus
- D. The vaccine remains in the injection site and produces immune cells
Correct answer: C
Rationale: The correct answer is C. Influenza immunization works by introducing a weakened or inactivated form of the virus into the body, allowing the immune system to recognize it as foreign. This recognition triggers the production of antibodies specific to the virus. Choice A is incorrect as the virus in the vaccine does not remain in the body until the end of the season. Choice B is incorrect as an attenuated virus does not cause immune system suppression but rather stimulates an immune response. Choice D is incorrect because the vaccine does not stay at the injection site but rather prompts a systemic immune response throughout the body.
3. Which of the following are normal arterial blood gas values?
- A. PH 7.25, PaCO2 52 mm Hg, PaO2 75 mm Hg, HCO3 18 mEq/L
- B. PH 7.50, PaCO2 30 mm Hg, PaO2 80 mm Hg, HCO3 28 mEq/L
- C. PH 7.40, PaCO2 40 mm Hg, PaO2 90 mm Hg, HCO3 24 mEq/L
- D. PH 7.15, PaCO2 30 mm Hg, PaO2 50 mm Hg, HCO3 24 mEq/L
Correct answer: C
Rationale: The correct answer is C: PH 7.40, PaCO2 40 mm Hg, PaO2 90 mm Hg, HCO3 24 mEq/L. These values represent a balanced state for arterial blood gas. Choice A has lower than normal PH and HCO3 levels and higher PaCO2 and lower PaO2 levels. Choice B has higher than normal PH and HCO3 levels, lower PaCO2, and a normal PaO2 level. Choice D has a significantly lower PH and PaO2 level, normal HCO3 level, and low PaCO2 level, indicating an acidic state with impaired oxygenation.
4. The patient should be taught that an improvement in symptoms will likely be noticed within
- A. 48 hours.
- B. a week to 10 days.
- C. 2 to 3 weeks.
- D. 4 to 6 weeks.
Correct answer: C
Rationale: When taking isoniazid and rifampin for active tuberculosis, patients should be taught that an improvement in symptoms will likely be noticed within 2 to 3 weeks. Choice A (48 hours) is too soon to expect significant improvement in symptoms. Choice B (a week to 10 days) is also too early for noticeable improvement with this medication regimen. Choice D (4 to 6 weeks) is too far out to expect a noticeable improvement in symptoms.
5. Seizures are diagnosed by which of the following?
- A. Electroencephalogram (EEG) and ECG
- B. Seizure symptoms and complete blood count (CBC)
- C. Seizure symptoms and electrocardiogram (ECG)
- D. Seizure symptoms and EEG
Correct answer: D
Rationale: Seizures are most accurately diagnosed by EEG, which measures brain activity. Choice A is incorrect as ECG (electrocardiogram) measures heart activity, not brain activity. Choice B is incorrect as CBC (complete blood count) is a blood test and not used to diagnose seizures. Choice C is incorrect as an ECG (electrocardiogram) also measures heart activity, not brain activity, and is not the primary diagnostic tool for seizures.
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