A nurse is preparing to assess the visual acuity of an adult client. Which of the following assessment should the nurse use for visual acuity?
Use the Snellen chart positioned 20 feet away from the client
Determine the client’s ability to read newsprint at a distance of 12 to 14 inches
Perform the confrontation test
Ask the client to read the print on a handheld jaeger card
The Correct Answer is A
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.
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Related Questions
Correct Answer is D
Explanation
A) A heart murmur is a high-pitched sound caused by a narrowing of a heart valve:
While it's true that a narrowing of a heart valve (stenosis) can cause a murmur, the description of a heart murmur as a "high-pitched sound" due to this narrowing is overly specific and does not fully explain what a murmur is. A murmur is not always high-pitched, and it is caused by turbulent blood flow, which may occur for various reasons beyond just valve stenosis.
B) A heart murmur is an extra sound heard from blood entering a rigid heart chamber:
This description is somewhat inaccurate. While murmurs can result from turbulent blood flow through the heart chambers or valves, the idea that murmurs are "extra sounds from blood entering a rigid heart chamber" is misleading. A murmur occurs when there is turbulent blood flow, which can happen in both rigid and non-rigid chambers. The key point is that it's the turbulent flow, not just rigidity, that causes the sound.
C) A heart murmur is a sound generated by inflammation around the heart muscle:
This is incorrect. Inflammation around the heart muscle, such as in pericarditis, can cause chest pain or other symptoms but does not generate a heart murmur. A murmur is caused by turbulent blood flow, which can result from various heart valve issues (e.g., stenosis, regurgitation) or defects in the heart's structure (e.g., septal defects), not from inflammation around the heart muscle.
D) A heart murmur indicates turbulent blood flow through a valve in the heart:
This is the most accurate description. A heart murmur is typically caused by turbulent or irregular blood flow through a heart valve. This can occur for several reasons, such as valve stenosis (narrowing), valve regurgitation (leakage), or congenital heart defects that cause abnormal flow patterns. The turbulent flow disrupts the normal laminar (smooth) blood flow, creating the characteristic sound that can be heard with a stethoscope. Murmurs can vary in timing, pitch, and intensity depending on the nature of the flow disturbance.
Correct Answer is C
Explanation
A) The best time to perform BSE is immediately prior to the menstrual cycle:
Performing a breast self-examination (BSE) immediately prior to the menstrual cycle is not ideal because hormonal changes leading up to menstruation can cause the breasts to become swollen, tender, and lumpy. These changes could make it difficult to detect subtle lumps or changes in the breast tissue. For the most accurate assessment, it's recommended that women avoid performing BSE during the premenstrual phase when the breast tissue is most likely to be affected by hormonal fluctuations.
B) If pregnancy is suspected, BSE should not be performed until post-delivery:
This statement is incorrect. There is no contraindication to performing a breast self-examination during pregnancy, and it is important for pregnant women to continue self-monitoring for any changes in breast tissue. In fact, BSE should be performed regularly during pregnancy, as the breast tissue can undergo changes due to hormonal shifts, and early detection of any abnormalities is key to successful management.
C) The best time to perform BSE is 4 to 7 days after the first day of the menstrual period:
This is the correct recommendation. The best time to perform a BSE is 4 to 7 days after the first day of the menstrual period because the breasts are least likely to be swollen or tender during this time. Hormonal levels are more stable at this point in the menstrual cycle, and any lumps or changes in the tissue are more likely to be noticeable. Performing BSE during this time increases the likelihood of detecting potential abnormalities.
D) The woman with diagnosed fibrocystic breast tissue should not rely on BSE:
While it is true that women with fibrocystic breast changes may experience lumpy, tender tissue, they should still perform BSE regularly. Fibrocystic tissue can sometimes make it more difficult to distinguish between normal and abnormal changes, but BSE remains an important tool for detecting significant changes, such as new lumps or changes in size, shape, or consistency. Women with fibrocystic breast tissue should be taught to perform BSE regularly and to report any unusual changes to their healthcare provider. Relying solely on BSE for breast cancer detection is not recommended, but it is an essential part of breast health awareness.
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