Patho Patho #83

Question

Which is the most prevalent etiology of mitral valve stenosis?

Answers

  1. Rheumatic heart disease
    • Rationale:

      This answer is correct because rheumatic heart disease places clients at very high risk for the development of mitral valve stenosis/ regurgitation.

  2. Papillary muscle rupture
    • Rationale:

      This answer choice is not correct because papillary muscle rupture is a result, rather than a cause, of mitral valve stenosis.

  3. Infective endocarditis
    • Rationale:

      This answer choice is not correct because rheumatic heart disease, and not infective endocarditis, is a common underlying etiology for mitral valve stenosis.

  4. Congestive heart failure
    • Rationale:

      This answer choice is not correct because congestive heart failure is a result, not a cause, of mitral valve stenosis.

Overview

The focus of this question is asking the nurse to identify the most common underlying etiology of mitral valve stenosis. Rheumatic fever is a complication of strep throat which can lead to the development of rheumatic heart disease if left untreated. Rheumatic heart disease very commonly results in mitral valve disease.

Explanation

Learning Outcomes

Mitral valve stenosis is a mitral valve that remains closed and stenotic when it should be open, during diastole. The mitral valve is located between the high pressure left atrium and ventricle making this valve the most susceptible to stenosis, prolapse, and regurgitation. A history of rheumatic heart disease is a very common underlying etiology for mitral valve disease.

Test Taking Tip

When studying pathophysiology, be sure to focus on the 1-3 most common etiologies for disease processes rather than attempting to memorize all possible etiologies.

Video Rationale