The nurse auscultates a heart murmur on a client with cardiovascular disease. At which anatomic landmark will an aortic murmur be heard the loudest?
Second intercostal space, right of sternum.
Third intercostal space, left of sternum.
Second intercostal space, left of sternum.
Fourth intercostal space, left mid-clavicular line.
The Correct Answer is C
Choice A reason: The second intercostal space, right of sternum, is not the anatomic landmark where an aortic murmur will be heard the loudest. A heart murmur is an abnormal sound that is produced by turbulent blood flow through the heart valves or chambers. ¹ An aortic murmur is a type of heart murmur that occurs when the aortic valve, which separates the left ventricle and the aorta, is damaged or diseased. ² The second intercostal space, right of sternum, is the location where the aortic valve can be best heard, but not the location where the aortic murmur will be most audible. ³
Choice B reason: The third intercostal space, left of sternum, is not the anatomic landmark where an aortic murmur will be heard the loudest. A heart murmur is an abnormal sound that is produced by turbulent blood flow through the heart valves or chambers. ¹ An aortic murmur is a type of heart murmur that occurs when the aortic valve, which separates the left ventricle and the aorta, is damaged or diseased. ² The third intercostal space, left of sternum, is the location where the pulmonary valve, which separates the right ventricle and the pulmonary artery, can be best heard, but not the location where the aortic murmur will be most audible. ³
Choice C reason: The second intercostal space, left of sternum, is the anatomic landmark where an aortic murmur will be heard the loudest. A heart murmur is an abnormal sound that is produced by turbulent blood flow through the heart valves or chambers. ¹ An aortic murmur is a type of heart murmur that occurs when the aortic valve, which separates the left ventricle and the aorta, is damaged or diseased. ² The second intercostal space, left of sternum, is the location where the aortic murmur will be most audible, as it is the closest to the aorta, the largest artery in the body. ³
Choice D reason: The fourth intercostal space, left mid-clavicular line, is not the anatomic landmark where an aortic murmur will be heard the loudest. A heart murmur is an abnormal sound that is produced by turbulent blood flow through the heart valves or chambers. ¹ An aortic murmur is a type of heart murmur that occurs when the aortic valve, which separates the left ventricle and the aorta, is damaged or diseased. ² The fourth intercostal space, left mid-clavicular line, is the location where the tricuspid valve, which separates the right atrium and the right ventricle, can be best heard, but not the location where the aortic murmur will be most audible. ³
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Limiting the intake of citrus juices is not related to the teaching about hydrochlorothiazide. Citrus juices are rich in vitamin C, which has no significant interaction with hydrochlorothiazide. The client does not need to avoid or limit citrus juices unless they have other medical conditions that require dietary restrictions.
Choice B reason: Eating bananas daily to lower the potassium level is a wrong statement. Bananas are high in potassium, which is a mineral that hydrochlorothiazide can deplete from the body. The client may need to increase their potassium intake or take a potassium supplement to prevent hypokalemia, a condition of low potassium level that can cause muscle weakness, cramps, and arrhythmias.
Choice C reason: Taking the pill each day in the morning is the correct statement. Hydrochlorothiazide is a diuretic that increases the urine output and reduces the blood volume and pressure. The client should take the pill in the morning to avoid nocturia, which is frequent urination at night that can disrupt the sleep quality and increase the risk of falls.
Choice D reason: Taking the pill each day after dinner is not the best statement. Hydrochlorothiazide can cause diuresis, which is increased urine production and excretion. Taking the pill after dinner can lead to nocturia, which is frequent urination at night that can interfere with the sleep cycle and cause fatigue and irritability. The client should take the pill in the morning to prevent nocturia and its complications.
Correct Answer is D
Explanation
Choice A reason: Total cholesterol is not the best indicator of the effectiveness of simvastatin, a drug that lowers cholesterol levels and reduces the risk of cardiovascular disease. ¹ Total cholesterol includes both LDL and HDL (high density lipoprotein), which have opposite effects on the heart and blood vessels. ² The normal range of total cholesterol for adults is less than 200 mg/dL, but this does not reflect the balance between LDL and HDL.
Choice B reason: Blood pressure is not directly related to the effectiveness of simvastatin, although high blood pressure and high cholesterol are both risk factors for cardiovascular disease. ³ Simvastatin does not lower blood pressure, but it may prevent or slow down the development of atherosclerosis, which is the narrowing and hardening of the arteries due to plaque buildup. ¹ The normal range of blood pressure for adults is less than 120/80 mmHg.
Choice C reason: Serum triglycerides are another type of fat in the blood that can contribute to cardiovascular disease. ² Simvastatin can lower triglyceride levels, but this is not its main effect. ¹ The normal range of serum triglycerides for adults is less than 150 mg/dL.
Choice D reason: LDL is the main target of simvastatin therapy, as it is the "bad" cholesterol that can cause plaque buildup and damage the arteries. ¹ Simvastatin works by inhibiting an enzyme that produces LDL in the liver. The optimal level of LDL for adults is less than 100 mg/dL, and even lower for those with high risk of cardiovascular disease. ² A LDL level of 90 mg/dL indicates that the client's current dose of simvastatin has been effective.
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