A nurse is reinforcing teaching to a client who has coronary artery disease. Which of the following statements should the nurse include in the teaching to explain the correlation between changes in the coronary arteries and manifestations that occur?
"Coronary arteries become more elastic causing the arteries to stretch as individuals age causing the heart not to receive enough oxygen."
"The heart and the coronary arteries weaken, leading to poor perfusion and resulting in angina."
"Manifestations occur due to dilation of coronary arteries with increased blood flow causing increased pressure."
"Coronary arteries decrease in diameter leading to insufficient blood, oxygen, and nutrients reaching the heart muscle."
The Correct Answer is D
A. While coronary arteries may change with age, the increased elasticity does not lead to insufficient oxygen; rather, it can affect their ability to respond to increased demand.
B. Weakening of the heart can contribute to heart failure but is not a direct explanation for how coronary artery disease causes angina.
C. Dilation of coronary arteries typically does not cause manifestations in coronary artery disease; instead, it is the narrowing (stenosis) that leads to issues.
D. Decreased diameter of the coronary arteries due to atherosclerosis is the primary issue in coronary artery disease, which leads to inadequate blood supply, oxygen, and nutrients to the heart muscle, causing symptoms like angina.
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Correct Answer is ["A","B","D"]
Explanation
A. Pain behind the ear is a common early symptom of Bell's palsy due to inflammation of the facial nerve.
B. Muscle distortion occurs as the facial muscles on the affected side weaken or become paralyzed, leading to an asymmetrical appearance.
C. Facial twitching is not a common manifestation of Bell's palsy; rather, it involves muscle paralysis or weakness.
D. Impaired taste, especially in the anterior two-thirds of the tongue, can occur due to facial nerve involvement.
E. Hearing loss is not typically associated with Bell's palsy; it usually affects facial motorfunction, not auditory function.
Correct Answer is C
Explanation
A. A QRS interval of 0.08 second is within the normal range and does not indicate a myocardial infarction.
B. A PR interval of 0.15 second is normal and not indicative of an acute myocardial infarction.
C. ST-segment elevation above the isoelectric line is a key indicator of an acute myocardial infarction (STEMI), signifying myocardial injury.
D. The QT interval being equal to the R to R interval is not a specific indicator of myocardial infarction.