While percussing the borders of the heart, the nurse picks up an area of dullness beginning at the 5th left intercostal space and moving upward to the 2nd left intercostal space at the sternal border. What do these findings indicate?
Cardiac atrophy.
Cardiac enlargement.
Benign variation.
Expected finding.
None
None
The Correct Answer is B
Answer: B. Cardiac enlargement.
Rationale:
A) Cardiac atrophy:
Cardiac atrophy refers to the reduction in the size of the heart muscles and is not typically detected through percussion. It would present differently, likely through imaging or echocardiography, rather than an increase in the area of dullness during percussion.
B) Cardiac enlargement:
Percussion revealing dullness extending from the 5th left intercostal space upward to the 2nd left intercostal space suggests an increase in the size of the heart. This pattern indicates cardiac enlargement, as the heart’s borders have extended beyond their typical boundaries, which are usually confined to the 5th left intercostal space along the midclavicular line.
C) Benign variation:
A benign variation would not typically cause such a significant change in the area of cardiac dullness. This finding is more concerning for pathology, such as cardiomegaly, than a harmless variation.
D) Expected finding:
The normal borders of the heart should not extend upward to the 2nd left intercostal space during percussion. This finding is not within normal limits and suggests an abnormal enlargement of the heart, rather than an expected physiological outcome.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A) Looking at the client from the side, observe the size and shape of the chest wall:
This action is more related to inspecting the physical appearance and symmetry of the chest wall but does not assess tactile fremitus.
B) Use the fingertips to compress tissue over the lungs for evidence of a crackling sensation:
This action may be more relevant for assessing subcutaneous emphysema (crepitus) but is not the correct method for assessing tactile fremitus.
C) Place the palm of the hand on the chest wall to feel vibrations while the client speaks:
This is the correct action to assess tactile fremitus. By placing the palm of the hand on various areas of the chest wall while the client repeats a phrase such as "ninety-nine," the nurse can feel for vibrations. Increased tactile fremitus can indicate consolidation, as seen in pneumonia.
D) Use a stethoscope to listen to and compare breath sounds anteriorly and posteriorly:
This action involves auscultation, which is important for assessing breath sounds but does not assess tactile fremitus directly.
Correct Answer is B
Explanation
B. Cardiac enlargement:
This is the most likely interpretation of the findings. A significant area of dullness across a larger portion of the chest, as described, suggests that the heart is enlarged (cardiomegaly). Enlargement of the heart may result from various conditions, such as heart failure, hypertension, or valvular disease, leading to increased cardiac size and the shift in the percussion borders. This could indicate that the heart has expanded beyond its normal anatomical limits, and further assessment, such as imaging, would be necessary to confirm the diagnosis.
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