ATI RN
MSN 570 Advanced Pathophysiology Final 2024
1. Which of the following statements characterizes irritable bowel syndrome?
- A. Typically does not cause anemia
- B. Not generally associated with intestinal E. coli
- C. Can be associated with anxiety and/or depression
- D. Not often associated with bloody diarrhea
Correct answer: C
Rationale: Irritable bowel syndrome (IBS) is a gastrointestinal disorder characterized by abdominal pain, bloating, and changes in bowel habits. While IBS can lead to symptoms like diarrhea or constipation, it typically does not cause anemia (choice A), is not generally associated with intestinal E. coli (choice B), and is not often associated with bloody diarrhea (choice D). However, IBS can indeed be associated with anxiety and/or depression (choice C) due to the gut-brain axis, a bidirectional communication system between the gut and the brain. This association is well-documented in IBS patients, highlighting the importance of considering psychological factors in managing the condition.
2. A female patient is taking combined hormonal contraceptives to prevent pregnancy. She visits the gynecology clinic and is noted to have a blood pressure of 176/102 mm Hg. The patient is started on enalapril mesylate 10 mg. In collaboration with the primary care provider, what other patient teaching should be provided based on her current medication regimen?
- A. Instruct on a low-salt diet.
- B. Instruct to discontinue the contraceptives.
- C. Instruct on the use of relaxation techniques to decrease stress.
- D. Instruct on the rationale for increasing the contraceptive dose.
Correct answer: A
Rationale: Women on hormonal contraceptives and antihypertensives like enalapril should be counseled to adopt a low-salt diet if severe hypertension occurs. This dietary modification can help in managing blood pressure levels. Instructing to discontinue the contraceptives is crucial in cases of severe hypertension as it poses an increased risk of cardiovascular events. Instructing on relaxation techniques may have some benefits in reducing stress levels but addressing the root cause, such as discontinuing contraceptives in this scenario, is more critical. There is no rationale for increasing the contraceptive dose when hypertension is present; in fact, it should be stopped to prevent complications.
3. A 23-year-old pregnant female visits her primary care provider for her final prenatal checkup. The primary care provider determines that the fetus has developed an infection in utero. Which of the following would be increased in the fetus at birth?
- A. IgG
- B. IgA
- C. IgM
- D. IgD
Correct answer: C
Rationale: The correct answer is IgM. IgM is the first antibody produced in response to an infection and is elevated in a fetus with an in utero infection. IgG is the primary antibody responsible for providing immunity to the fetus and is transferred across the placenta during the third trimester. IgA is mainly found in mucosal areas and colostrum but not significantly elevated in fetal infections. IgD is involved in the development and maturation of B cells but not typically increased in fetal infections.
4. As you are walking in the park, a huge black Labrador runs up to you and places his paws on your shoulders. Immediately your heart starts racing, you feel palpitations, anxiety, and your hands become a little shaky. The nurse knows that this response is primarily caused by:
- A. cerebral cortex.
- B. somatic nervous system.
- C. limbic system.
- D. autonomic nervous system.
Correct answer: D
Rationale: The autonomic nervous system controls involuntary bodily functions like heart rate, respiration, and sweating. In the given scenario, the 'fight or flight' response is activated, leading to increased heart rate, palpitations, anxiety, and shaky hands. The cerebral cortex is involved in conscious thought processes and decision-making, not the immediate physiological response observed here. The somatic nervous system regulates voluntary movements, while the limbic system is responsible for emotions and memory, but the autonomic nervous system is primarily responsible for the physiological responses seen in this situation.
5. During a clinical assessment of a 68-year-old client who has suffered a head injury, a neurologist suspects that the client has sustained damage to her vagus nerve (CN X). Which assessment finding is most likely to lead the physician to this conclusion?
- A. The client has difficulty swallowing.
- B. The client has loss of gag reflex.
- C. The client has an inability to smell.
- D. The client has impaired eye movement.
Correct answer: B
Rationale: The correct answer is B. Damage to the vagus nerve can result in the loss of the gag reflex, which is a key indicator for the neurologist. Difficulty swallowing (Choice A) is more associated with issues related to the glossopharyngeal nerve (CN IX) and hypoglossal nerve (CN XII). An inability to smell (Choice C) is related to the olfactory nerve (CN I), and impaired eye movement (Choice D) is typically associated with damage to the oculomotor nerve (CN III), trochlear nerve (CN IV), or abducens nerve (CN VI), not the vagus nerve.
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