Nokea
A patient with mitral valve prolapse is admitted for a scheduled bronchoscopy to investigate recent hemoptysis. The physician has ordered gentamicin to be taken before the procedure. What is the rationale for this?
- A. To prevent bacterial endocarditis
- B. To prevent hospital-acquired pneumonia
- C. To minimize the need for antibiotic use during the procedure
- D. To decrease the need for surgical asepsis
Correct Answer: A
Rationale: Antibiotic prophylaxis is recommended for high-risk patients immediately before and sometimes after the following invasive procedures, such as bronchoscopy. Gentamicin would not be given to prevent pneumonia, to avoid antibiotic use during the procedure, or to decrease the need for surgical asepsis.
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A patient who has undergone a valve replacement with a mechanical valve prosthesis is due to be discharged home. During discharge teaching, the nurse should discuss the importance of antibiotic prophylaxis prior to which of the following?
- A. Exposure to immunocompromised individuals
- B. Future hospital admissions
- C. Dental procedures
- D. Live vaccinations
Correct Answer: C
Rationale: Following mechanical valve replacement, antibiotic prophylaxis is necessary before dental procedures involving manipulation of gingival tissue, the periapical area of the teeth or perforation of the oral mucosa (not including routine anesthetic injections, placement of orthodontic brackets, or loss of deciduous teeth). There are no current recommendations around antibiotic prophylaxis prior to vaccination, future hospital admissions, or exposure to people who are immunosuppressed.
Most individuals who have mitral valve prolapse never have any symptoms, although this is not the case for every patient. What symptoms might a patient have with mitral valve prolapse?
- A. Anxiety
- B. Fatigue
- C. Shoulder pain
- D. Tachypnea
- E. Palpitations
Correct Answer: A,B,E
Rationale: Most people who have mitral valve prolapse never have symptoms. A few have symptoms of fatigue, shortness of breath, lightheadedness, dizziness, syncope, palpitations, chest pain, and anxiety. Hyperpnea and shoulder pain are not characteristic symptoms of mitral valve prolapse.
The patient has just returned to the floor after balloon valvuloplasty of the aortic valve and the nurse is planning appropriate assessments. The nurse should know that complications following this procedure include what?
- A. Emboli
- B. Mitral valve damage
- C. Ventricular dysrhythmia
- D. Atrial-septal defect
- E. Plaque formation
Correct Answer: A,B,C
Rationale: Possible complications include aortic regurgitation, emboli, ventricular perforation, rupture of the aortic valve annulus, ventricular dysrhythmia, mitral valve damage, and bleeding from the catheter insertion sites. Atrial-septal defect and plaque formation are not complications of a balloon valvuloplasty.
An older adult patient has been diagnosed with aortic regurgitation. What change in blood flow should the nurse expect to see on this patients echocardiogram?
- A. Blood to flow back from the aorta to the left ventricle
- B. Obstruction of blood flow from the left ventricle
- C. Blood to flow back from the left atrium to the left ventricle
- D. Obstruction of blood from the left atrium to left ventricle
Correct Answer: A
Rationale: Aortic regurgitation occurs when the aortic valve does not completely close, and blood flows back to the left ventricle from the aorta during diastole. Aortic regurgitation does not cause obstruction of blood flow from the left ventricle, blood to flow back from the left atrium to the left ventricle, or obstruction of blood from the left atrium to left ventricle.
The staff educator is presenting a workshop on valvular disorders. When discussing the pathophysiology of aortic regurgitation the educator points out the need to emphasize that aortic regurgitation causes what?
- A. Cardiac tamponade
- B. Left ventricular hypertrophy
- C. Right-sided heart failure
- D. Ventricular insufficiency
Correct Answer: B
Rationale: Aortic regurgitation eventually causes left ventricular hypertrophy. In aortic regurgitation, blood from the aorta returns to the left ventricle during diastole in addition to the blood normally delivered by the left atrium. The left ventricle dilates, trying to accommodate the increased volume of blood. Aortic regurgitation does not cause cardiac tamponade, right-sided heart failure, or ventricular insufficiency.