Nursing Elites

1. A client is having difficulties reading an educational pamphlet. He cannot find his glasses. In order to read the words, he must hold the pamphlet at arm's length, which allows him to read the information. Which vision deficit does this client most likely suffer from?

• A. Cataracts
• B. Glaucoma
• C. Astigmatism
• D. Presbyopia

Correct answer: D

Rationale: Presbyopia is a condition that occurs when the lens of the eye loses accommodation and is unable to focus light on objects nearby. As a result, clients are unable to see or read items up close but may have success when holding the same item at arm's length. Many clients with presbyopia must wear bifocals, but long-distance vision remains unaffected. Cataracts involve clouding of the eye's lens, leading to blurry vision. Glaucoma is associated with increased intraocular pressure that damages the optic nerve, causing vision loss. Astigmatism is a refractive error where the cornea or lens has an irregular shape, leading to distorted or blurred vision.

2. A 1-month-old infant has a head measurement of 34 cm and a chest circumference of 32 cm. Based on the interpretation of these findings, what action would the nurse take?

• A. Refer the infant to a physician for further evaluation.
• B. Consider these findings normal for a 1-month-old infant.
• C. Expect the chest circumference to be greater than the head circumference.
• D. Ask the parent to return in 2 weeks to re-evaluate the head and chest circumferences.

Correct answer: B

Rationale: In infants, a normal head measurement is approximately 32 to 38 cm, and it is usually around 2 cm larger than the chest circumference. These measurements vary with age; between 6 months and 2 years, both measurements are approximately the same, and after age 2 years, the chest circumference becomes greater than the head circumference. Given that the 1-month-old infant's head measurement is within the typical range and slightly larger than the chest circumference, the nurse should consider these findings normal. There is no indication to refer the infant for further evaluation or to have the parent return for re-evaluation in 2 weeks, as these measurements fall within the expected parameters for a 1-month-old infant.

3. Which vacutainer tubes should be used when a requisition calls for blood to be drawn for an H&H and glucose test?

• A. One light blue, one red
• B. Two lavenders
• C. One lavender, one grey
• D. One green, one red

Correct answer: D

Rationale: The correct answer is 'One green, one red.' An H&H test involves hemoglobin and hematocrit, which are components of a complete blood count and are typically drawn in a lavender tube. On the other hand, blood for glucose testing is collected in grey tubes. Therefore, when drawing blood for both an H&H and glucose test, one green tube for glucose and one red tube for H&H should be used. The other choices are incorrect because light blue tubes are used for coagulation studies, lavender tubes are for complete blood counts, and green tubes are for chemistry tests like glucose, while grey tubes are specifically for glucose testing.

4. The NFPA diamond has four colors. The blue diamond:

• A. indicates hazards to health.
• B. designates that it is safe to use water to put out this type of fire.
• C. indicates that ice is necessary to treat an injury with this type of chemical.
• D. indicates that the chemical may be incinerated upon disposal.

Correct answer: A

Rationale: The National Fire Protection Agency (NFPA) uses a safety diamond to communicate the level of threat posed by a specific chemical. The blue diamond in the NFPA diamond system signifies potential health hazards associated with the use of that chemical. Choice B is incorrect because the blue diamond does not indicate anything about using water to extinguish fires. Choice C is incorrect as the NFPA diamond does not provide information on treating injuries. Choice D is also incorrect as the blue diamond does not suggest incineration upon disposal; it pertains to health hazards.

5. The healthcare professional is preparing to use a stethoscope for auscultation. Which statement is true regarding the diaphragm of the stethoscope?

• A. Used to listen for high-pitched sounds
• B. Used to listen for low-pitched sounds
• C. Should be firmly held against the person's skin to block out low-pitched sounds
• D. Should be lightly held against the person's skin to listen for extra heart sounds and murmurs

Correct answer: A

Rationale: The diaphragm of the stethoscope is designed for listening to high-pitched sounds like breath, bowel, and normal heart sounds. It should be firmly held against the person's skin to ensure optimal sound transmission, leaving a ring after use. On the other hand, the bell of the stethoscope is ideal for detecting soft, low-pitched sounds such as extra heart sounds or murmurs. Therefore, the diaphragm is not used to block out low-pitched sounds but rather to enhance the detection of high-frequency sounds.

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