A nurse is auscultating breath sounds of a client with pneumonia. The nurse should recognize that lung consolidation produces which adventitious sound?
Bronchial sounds
Crackles
Whispered pectoriloquy
Bronchophony
The Correct Answer is B
A) Bronchial sounds:
Bronchial breath sounds are normal over the trachea and large bronchi but are considered abnormal if heard over the peripheral lung fields. In the case of pneumonia or other types of lung consolidation, bronchial sounds may be transmitted to more peripheral areas of the lungs where they are typically not heard. However, bronchial sounds themselves are not the specific adventitious sound produced by lung consolidation, though their presence can suggest consolidation.
B) Crackles:
Crackles (also known as rales) are the adventitious sounds most commonly associated with lung consolidation, such as in pneumonia. Crackles occur when air bubbles move through the fluid or mucus in the alveoli and small airways. In pneumonia, the inflammation and accumulation of fluid or pus in the alveoli (consolidation) causes crackling or popping sounds during inspiration. Crackles are a key indicator of consolidation in the lungs, making this the correct choice.
C) Whispered pectoriloquy:
Whispered pectoriloquy is a type of vocal fremitus that can be heard during auscultation when the patient whispers a phrase. It is an abnormal finding that can occur in the presence of lung consolidation, where the whispered sounds are heard more clearly or louder than normal. While it is related to lung consolidation, it is not an adventitious sound like crackles. Instead, it is a sign that can indicate the presence of consolidation when paired with other findings like bronchophony.
D) Bronchophony:
Bronchophony is the increased clarity and intensity of spoken sounds during auscultation, which occurs in areas of lung consolidation. When a patient says "99," the sound may become more distinct and louder when consolidation is present. Although bronchophony is another finding that may suggest consolidation, it is a vocal sound rather than an adventitious breath sound. Bronchophony refers specifically to changes in voice transmission, not to the crackling or popping sounds caused by consolidation itself.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) Use the Snellen chart positioned 20 feet away from the client:
This is the correct method for assessing visual acuity in adults. The Snellen chart is the standard tool used to measure visual acuity at a distance. The client is positioned 20 feet away from the chart, and they are asked to read the smallest line of letters they can clearly identify. The result is typically documented as a fraction (e.g., 20/20), where the numerator represents the distance from the chart, and the denominator represents the distance at which a person with normal vision can read the same line. This test assesses distance vision and is essential for checking overall visual sharpness.
B) Determine the client’s ability to read newsprint at a distance of 12 to 14 inches:
This is not used to assess visual acuity; it assesses near vision and can be part of the overall vision examination, but it is not the standard method for testing visual acuity. Typically, the near vision assessment is done with tools like a Jaeger chart or by asking the client to read newsprint at a standard reading distance (12 to 14 inches), but this is not the primary test for visual acuity. The Snellen chart is specifically for distance vision.
C) Perform the confrontation test:
The confrontation test is used to assess the visual fields, not visual acuity. It is a quick screening to determine if the client has any peripheral vision loss, where the nurse and the client compare their visual fields by covering one eye at a time and identifying moving fingers in the periphery. While important, this test does not assess the sharpness or clarity of central vision, which is the focus of a visual acuity test.
D) Ask the client to read the print on a handheld Jaeger card:
The Jaeger card is used to assess near vision, not visual acuity. It is used for clients who may have difficulty reading small print at a normal reading distance and helps assess presbyopia (difficulty focusing on near objects with age). However, this test is for near vision and is not the primary test for visual acuity, which typically focuses on distance vision.
Correct Answer is D
Explanation
A) AV node → SA node → bundle of His → Erb's Point:
This sequence is incorrect because the electrical impulse of the heart starts at the SA (sinoatrial) node, not the AV (atrioventricular) node. The SA node is the natural pacemaker of the heart, initiating the electrical signal. The correct order of conduction is SA node → AV node → bundle of His → bundle branches, and finally, the Purkinje fibers. Erb's Point is an anatomical reference point for auscultation, not part of the electrical conduction pathway.
B) Bundle of His → AV node → SA node → Erb's Point:
This sequence is also incorrect. The electrical impulse originates at the SA node, not the bundle of His. The SA node stimulates the AV node, which in turn sends the signal to the bundle of His and then to the bundle branches. This pathway is essential for coordinating the contraction of the heart muscle, starting from the atria and moving to the ventricles.
C) AV node → SA node → bundle of His → bundle branches:
This sequence is reversed and incorrect. The impulse starts at the SA node, not the AV node. The SA node fires first, sending the electrical signal to the AV node, and then the signal travels down the bundle of His, into the left and right bundle branches, and finally to the Purkinje fibers.
D) SA node → AV node → bundle of His → bundle branches:
This is the correct sequence of the electrical conduction pathway of the heart. The electrical impulse originates at the SA node (the heart's natural pacemaker), then travels to the AV node, where it is delayed to allow the atria to contract and fill the ventricles. From there, the impulse moves down the bundle of His, which splits into the left and right bundle branches, leading to the Purkinje fibers that transmit the impulse throughout the ventricles, causing them to contract. This sequence ensures proper coordination and timing of the heart's contractions.
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