The Patient Diagnosed with Inadequate Closure of the Mitral Valve

question 7

Multiple Choice

The patient diagnosed with inadequate closure of the mitral valve is scheduled for surgery and asks the nurse,"Why does it matter if my valve leaks?" What is the nurse's best response to explain why this mitral valve needs to be repaired?

• A) "Blood backflows from the left ventricle to the left atrium, reducing available blood flowing to the body."
• B) "Blood backflows from the right ventricle to the right atrium, reducing available blood flow to the lungs."
• C) "Blood backflows from the aorta into the left ventricle, reducing blood pressure and causing dizziness."
• D) "Blood backflows from the pulmonary artery into the right ventricle, reducing blood flow to the lungs."

---

Definitions:

Shaping

A method of gradually teaching a new behavior through the use of reinforcement until the target behavior is achieved.

Chaining

A method of teaching complex behaviors by breaking down the task into small steps and teaching each step within the sequence individually until the whole sequence is mastered.

Positive Reinforcement

A technique used in behavioral psychology to increase the likelihood of a desired behavior by rewarding it.

Stimulus Discrimination

The learned ability to differentiate between similar stimuli and respond appropriately to each.