A nurse is auscultating the lungs of a client and hears low-pitched, soft breath sounds over the posterior lower lobes and inspiration that is longer than expiration. How should the nurse interpret these findings?
These sounds are normally auscultated over the trachea
These are bronchial breath sounds and normal in that location
These are bronchovesicular breath sounds and normal in that location
These are vesicular breath sounds and normal in that location
The Correct Answer is D
A) These sounds are normally auscultated over the trachea:
This is incorrect. The tracheal breath sounds are harsh, loud, and high-pitched, typically heard over the trachea and larynx. These characteristics differ from the soft, low-pitched sounds described in the question, which are more consistent with vesicular breath sounds.
B) These are bronchial breath sounds and normal in that location:
This is incorrect. Bronchial breath sounds are typically heard over the trachea and larynx, not the lower lobes of the lungs. Bronchial sounds are loud, high-pitched, and have a longer expiration phase compared to inspiration, unlike the low-pitched, soft sounds with longer inspiration that are heard in the lower lobes.
C) These are bronchovesicular breath sounds and normal in that location:
This is incorrect. Bronchovesicular breath sounds are a mix of bronchial and vesicular sounds, with inspiration and expiration of about equal duration. They are typically heard over the major bronchi, near the sternum and between the scapulae, rather than over the posterior lower lobes. The description in the question suggests vesicular breath sounds, which have a longer inspiration phase.
D) These are vesicular breath sounds and normal in that location:
This is the correct answer. Vesicular breath sounds are soft, low-pitched, and typically heard over the peripheral lung fields, including the posterior lower lobes. These sounds have a longer inspiration phase than expiration and are considered normal in this location. The description in the question fits the characteristics of vesicular breath sounds perfectly.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) The atria contract toward the end of diastole and push the remaining blood into the ventricles:
This is the correct definition of the atrial kick. The atrial kick refers to the contraction of the atria just before the ventricles contract, which occurs late in diastole. During this phase, the atria contract to push the remaining blood into the ventricles, ensuring that the ventricles are as filled as possible before the next ventricular contraction. This action contributes to about 20–30% of the ventricular filling, especially important in situations where the heart rate is fast, as there may be less time for passive filling during diastole.
B) Contraction of the atria at the beginning of diastole can be felt as a click:
This statement is incorrect. Atria contract at the end of diastole, not the beginning. The atrial contraction is not typically felt as a "click." If there is a "click" sound, it could indicate an abnormal heart valve sound, such as from a mitral valve prolapse, rather than the normal atrial contraction. The atrial kick itself is not associated with any audible click but may be heard as part of the S4 heart sound, especially in conditions with stiff ventricles (such as hypertension or heart failure).
C) The ventricles contract during systole and attempt to push against closed atria:
This is not an accurate description of the atrial kick. During systole, the ventricles contract and push blood into the aorta and pulmonary artery through the open semilunar valves, not against the atria. The atrial kick is a part of diastole, not systole, and involves the atria pushing blood into the ventricles, not the ventricles pushing against the atria.
D) Atrial kick is the pressure exerted against the atria as the ventricles contract during systole:
This description is incorrect. The atrial kick occurs when the atria contract near the end of diastole, not during systole. During systole, the ventricles contract and pump blood out of the heart, but this is not related to the atrial kick. Instead, the atrial kick is the contribution of atrial contraction to the final phase of ventricular filling, just before the ventricles contract.
Correct Answer is B
Explanation
A) Inspection of the shape and configuration of the chest during normal breathing:
While inspecting the shape and configuration of the chest can provide important information about potential deformities or abnormalities (such as a barrel chest or scoliosis), it does not directly assess the symmetry of chest expansion. Inspection primarily focuses on the external appearance rather than the physiological movement of the chest wall during respiration. Symmetry of chest expansion requires more than visual observation; it involves assessing the movement of the chest during inhalation and exhalation.
B) Placing hands sideways on the posterolateral chest wall with thumbs pointing together at the level of T9 or T10:
This technique is the most effective for confirming symmetric expansion of the chest. The nurse places their hands on the patient's back, with the thumbs positioned at the level of T9 or T10, and asks the patient to take a deep breath. As the patient inhales, the nurse assesses the expansion of both sides of the chest by observing whether the thumbs move apart symmetrically. This test directly evaluates the expansion of the lungs and chest wall during respiration and is the most accurate way to assess symmetry.
C) Percussion of the posterior chest to initiate vibration of the lung structures:
Percussion is a technique used to assess the underlying lung tissue and the presence of conditions like pneumonia, fluid accumulation, or air trapping. It does not directly assess the symmetry of chest expansion. While percussion may provide valuable diagnostic information about the lungs, it does not help in determining how evenly the chest is expanding during normal breathing.
D) Placing the palmar surface of the fingers of one hand against the chest and having the client repeat "ninety-nine":
This technique refers to vocal fremitus, where the nurse places their hands on the client's chest while the client repeats "ninety-nine." It helps assess the transmission of sound vibrations through the chest wall, which can be used to detect areas of consolidation or fluid in the lungs. However, it does not directly evaluate the symmetry of chest expansion. The vibration felt on both sides of the chest may be different in cases of lung disease, but this test does not assess the movement of the chest during breathing.
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