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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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If Mr. Simpson begins to have pain that is worse with inspiration and relieved by sitting up, your assessment of his situation is that he has developed
- A. Myocarditis
- B. An extended infarction
- C. Cardiac cripple syndrome
- D. Pericarditis
Correct Answer: D
Rationale: Pericarditis presents with positional pain and ECG changes.
What is the condition where the heart's mitral valve does not close properly, allowing blood to leak 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. In this condition, the mitral valve fails to close properly, causing blood to flow back into the left atrium during ventricular contraction. This results in decreased forward blood flow and increased volume in the left atrium and ventricle. Mitral regurgitation can lead to symptoms like fatigue, shortness of breath, and heart murmur upon auscultation.
Now, let's analyze the other choices:
B: Aortic stenosis - This involves narrowing of the aortic valve, obstructing blood flow from the left ventricle to the aorta.
C: Tricuspid regurgitation - Involves backward flow of blood from the right ventricle to the right atrium due to a faulty tricuspid valve.
D: Pulmonary hypertension - Elevated blood pressure in the pulmonary arteries, usually caused by underlying conditions affecting the lungs or heart.
Therefore, the correct answer is A because it specifically describes
What is a condition where the arteries that supply blood to the heart muscle become hardened and narrowed due to the buildup of plaque?
- A. Atherosclerosis
- B. Aneurysm
- C. Arrhythmia
- D. Peripheral artery disease
Correct Answer: A
Rationale: The correct answer is A: Atherosclerosis. Atherosclerosis is the condition where arteries supplying blood to the heart become hardened and narrowed due to plaque buildup, leading to decreased blood flow and potential heart issues. Aneurysm (B) is the weakening and bulging of an artery wall, not related to plaque buildup. Arrhythmia (C) is an irregular heartbeat, not directly related to arterial blockages. Peripheral artery disease (D) involves narrowing of arteries in the limbs, not specifically related to the heart. Thus, Atherosclerosis is the most fitting choice for the given condition.
Which chronic respiratory condition is characterized by the narrowing and inflammation of the airways, leading to difficulty breathing?
- A. Asthma
- B. COPD
- C. Bronchitis
- D. Pneumonia
Correct Answer: A
Rationale: Step-by-step rationale:
1. Asthma is characterized by airway inflammation and narrowing, leading to difficulty breathing.
2. It is a chronic respiratory condition with symptoms like wheezing, coughing, and shortness of breath.
3. Asthma exacerbations can be triggered by various factors like allergens or exercise.
4. Treatment includes bronchodilators and anti-inflammatory medications to manage symptoms.
5. COPD, bronchitis, and pneumonia involve different pathophysiological mechanisms and are not primarily characterized by airway narrowing.
Summary:
Asthma is the correct answer due to its specific features of airway inflammation and narrowing, distinct from COPD, bronchitis, and pneumonia, which have different underlying causes and symptoms.
During the assessment, the nurse identifies crackles in the lungs and an S3 heart sound. Which complication of MI should the nurse suspect and further investigate?
- A. Pericarditis
- B. Heart failure
- C. Ventricular aneurysm
- D. Papillary muscle dysfunction
Correct Answer: B
Rationale: Crackles and S3 indicate heart failure.