Nokea
Which type of heart valve disease occurs when the mitral valve does not close properly, allowing blood to flow backward into the left atrium?
- A. Mitral regurgitation
- B. Aortic stenosis
- C. Tricuspid regurgitation
- D. Pulmonary hypertension
Correct Answer: A
Rationale: The correct answer is A: Mitral regurgitation. When the mitral valve does not close properly, it causes blood to flow backward into the left atrium during the heart's contraction phase. This condition is known as mitral regurgitation. Aortic stenosis (B) is narrowing of the aortic valve, not related to the mitral valve. Tricuspid regurgitation (C) involves the tricuspid valve, not the mitral valve. Pulmonary hypertension (D) is high blood pressure in the lungs, not directly related to a malfunctioning mitral valve.
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When administering enoxaparin (Lovenox) to a client, what is the most important lab value to monitor?
- A. Platelet count
- B. aPTT
- C. Hemoglobin
- D. INR
Correct Answer: A
Rationale: The correct answer is A: Platelet count. When administering enoxaparin, the most important lab value to monitor is the platelet count because enoxaparin can cause thrombocytopenia, a potentially serious adverse effect. Monitoring platelet count helps to detect and prevent this complication.
Summary of other choices:
B: aPTT - Enoxaparin does not directly affect aPTT, so monitoring this value is not as critical as platelet count.
C: Hemoglobin - While monitoring hemoglobin may be important for some conditions, it is not the most crucial lab value to monitor when administering enoxaparin.
D: INR - Enoxaparin does not affect the INR, so monitoring this value is not necessary when administering this medication.
When administering furosemide (Lasix) to a client, which lab value is most important to monitor?
- A. Potassium
- B. Sodium
- C. Calcium
- D. Chloride
Correct Answer: A
Rationale: The correct answer is A: Potassium. Furosemide is a loop diuretic that can cause potassium loss through increased urine output. Monitoring potassium levels is crucial to prevent hypokalemia, which can lead to serious cardiac arrhythmias. Sodium (B) and chloride (D) levels can also be affected by furosemide but are not as critical as potassium. Calcium (C) monitoring is not typically required when administering furosemide. By closely monitoring potassium levels, healthcare providers can prevent potential complications and ensure the safe administration of furosemide.
Which of the following nursing interventions should a nurse perform when caring for a client with congestive heart failure who has decreased cardiac output?
- A. Encourage activities that engage the Valsalva maneuver.
- B. Encourage the client to perform exercises.
- C. Assess apical heart rate before administering digitalis.
- D. Offer small, frequent feedings.
Correct Answer: C
Rationale: Digitalis therapy requires careful monitoring of heart rate to prevent toxicity and worsening cardiac output.
What advice about sexual activity should the nurse give to a male patient who has had an MI?
- A. The patient should use the superior position
- B. Foreplay may cause too great an increase in heart rate
- C. Prophylactic nitroglycerin may be used if angina occurs
- D. Performance can be enhanced with the use of sildenafil (Viagra)
Correct Answer: C
Rationale: Nitroglycerin prevents angina during activity.
If Mr. Lane, with essential hypertension, complains of dizziness when changing position, your evaluation would be that Mr. Lane
- A. is probably not taking his medications properly
- B. should be instructed in preventing hypotensive reactions
- C. is responding as expected to the prescribed medications
- D. should be totally reevaluated
Correct Answer: B
Rationale: Dizziness may indicate postural hypotension, requiring preventive education.