The nurse auscultates a systolic murmur in the second intercostal space to the right of the sternum while performing a cardiac assessment on a client. The nurse interprets this finding as:
An occlusion of the right coronary artery
An aneurysm of the descending aorta
Decreased fluid in the pericardial sac
Distortion of one or more heart valves
The Correct Answer is D
Choice A reason: This is not a correct interpretation. An occlusion of the right coronary artery is a blockage of the blood flow to the right side of the heart, which can cause a heart attack or ischemia. This condition does not produce a systolic murmur, but rather chest pain, shortness of breath, sweating, or nausea. A systolic murmur is a sound that occurs during the contraction of the heart, when the blood flows through a narrowed or leaky valve.
Choice B reason: This is not a correct interpretation. An aneurysm of the descending aorta is a bulging or weakening of the wall of the large artery that carries blood from the heart to the lower body. This condition does not produce a systolic murmur, but rather a pulsating mass in the abdomen, back pain, or abdominal pain. A systolic murmur is a sound that occurs during the contraction of the heart, when the blood flows through a narrowed or leaky valve.
Choice C reason: This is not a correct interpretation. Decreased fluid in the pericardial sac is a condition where the amount of fluid that surrounds and cushions the heart is reduced. This can be caused by dehydration, infection, or inflammation. This condition does not produce a systolic murmur, but rather a pericardial friction rub, which is a scratching or grating sound that occurs when the layers of the pericardium rub against each other. A systolic murmur is a sound that occurs during the contraction of the heart, when the blood flows through a narrowed or leaky valve.
Choice D reason: This is the correct interpretation. Distortion of one or more heart valves is a condition where the shape or function of the valves that regulate the blood flow through the heart is altered. This can be caused by congenital defects, rheumatic fever, endocarditis, or aging. This condition can produce a systolic murmur, which is a sound that occurs during the contraction of the heart, when the blood flows through a narrowed or leaky valve. The location and the intensity of the murmur can help identify which valve is affected. A systolic murmur in the second intercostal space to the right of the sternum can indicate a problem with the aortic valve.
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Naxlex Comprehensive Predictor Exams
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Correct Answer is C
Explanation
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
Correct Answer is D
Explanation
Choice A reason: Decreased hair is most likely a hereditary condition and nail changes are related to fungus is not the statement that describes the cause of this finding. This statement is not based on evidence and does not explain the relationship between peripheral vascular disease and the observed changes in the legs and feet.
Choice B reason: A blood clot may be forming and the client needs immediate intervention is not the statement that describes the cause of this finding. This statement is an alarmist and inaccurate interpretation of the finding. A blood clot would cause more acute and severe symptoms, such as pain, swelling, redness, and warmth in the affected area.
Choice C reason: Decreased oxygen to the tissues causes changes in hair growth and nail texture is the statement that describes the cause of this finding. This statement is based on the pathophysiology of peripheral vascular disease, which is a chronic condition that reduces the blood flow to the extremities due to atherosclerosis or inflammation of the blood vessels. The reduced blood flow leads to tissue ischemia and necrosis, which can manifest as hair loss, thickening and yellowing of the nails, skin ulcers, and gangrene.
Choice D reason: Depending on the client's age, the findings may be normal is not the statement that describes the cause of this finding. This statement is a vague and dismissive response that does not address the underlying problem of peripheral vascular disease. The findings are not normal for any age group and require further assessment and intervention.
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