a patient with erectile dysfunction is prescribed sildenafil viagra what condition would contraindicate the use of this medication
Logo

Nursing Elites

ATI RN

Pathophysiology Final Exam

1. A patient with erectile dysfunction is prescribed sildenafil (Viagra). What condition would contraindicate the use of this medication?

Correct answer: B

Rationale: The correct answer is B: 'Use of nitrates.' Sildenafil (Viagra) is contraindicated in patients taking nitrates due to the risk of severe hypotension. Nitrates and sildenafil both cause vasodilation, and their combined use can lead to a dangerous drop in blood pressure. Choices A, C, and D are incorrect because a history of hypertension, recent use of antihypertensive medications, or a history of peptic ulcer disease are not direct contraindications for using sildenafil.

2. Which clients are at highest risk for pneumonia?

Correct answer: C

Rationale: Clients who are hospitalized and immunocompromised are at the highest risk for pneumonia due to their weakened immune systems. Choice A is incorrect as young and healthy individuals typically have stronger immune systems. Choice B is incorrect because regular exercise can actually boost the immune system and reduce the risk of infections. Choice D is incorrect as having adequate respiratory function does not necessarily correlate with the risk of developing pneumonia.

3. Which of the following mediates humoral immunity?

Correct answer: C

Rationale: Humoral immunity is mediated by B cells, not natural killer cells, T cells, or neutrophils. B cells are responsible for producing antibodies, which are essential components of humoral immunity.

4. A patient is being treated for active tuberculosis with ethambutol (Myambutol). The patient states to the nurse that he cannot identify the red and green on the traffic lights when he is driving. Based on this finding, what medical intervention is most appropriate?

Correct answer: A

Rationale: The correct answer is to assess for photosensitivity. Ethambutol can cause optic neuritis, leading to visual disturbances, including difficulty differentiating red and green colors. This is a sign of optic nerve damage and requires immediate evaluation. Discontinuing ethambutol may be necessary if optic neuritis is confirmed, but this decision should be made by a healthcare provider. Decreasing the dose of ethambutol may not address the visual changes. Administering vitamin B does not directly address the side effect caused by ethambutol.

5. After teaching the students about B cells, which statement indicates teaching was successful? B cells are originally derived from cells of the:

Correct answer: A

Rationale: The correct answer is A: Bone marrow. B cells are originally derived from cells of the bone marrow. Bone marrow is the primary site where B cells develop and mature. Lymph nodes (choice B), gut-associated lymphoid tissue (choice C), and the thymus (choice D) are involved in the immune response but are not the primary site of origin for B cells.

Similar Questions

A patient is prescribed tadalafil (Cialis) for erectile dysfunction. What critical contraindication should the nurse discuss with the patient?
When the body produces antibodies against its own tissue, the condition is called
A patient who is undergoing treatment for cytomegalovirus received his first dose of IV ganciclovir 3 days ago. When reviewing this patient's most recent blood work, what abnormality should the nurse most likely attribute to the use of this drug?
A woman with severe visual and auditory deficits is able to identify individuals by running her fingers lightly over her face. Which source is most likely to provide the input that allows for the woman's unique ability?
Which of the following is a factor that leads to increased risk for dehydration in the elderly?

Access More Features

ATI RN Basic
$69.99/ 30 days

  • 5,000 Questions with answers
  • All ATI courses Coverage
  • 30 days access

ATI RN Premium
$149.99/ 90 days

  • 5,000 Questions with answers
  • All ATI courses Coverage
  • 30 days access

Other Courses