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When performing an eye examination, which area can a healthcare provider best visualize using an ophthalmoscope?
- A. Iris
- B. Cornea
- C. Optic disc
- D. Conjunctiva
Correct Answer: C
Rationale: An ophthalmoscope is a tool used to visualize the internal structures of the eye during an examination. The optic disc, located on the internal surface of the retina, can be best visualized using an ophthalmoscope. The iris, cornea, and conjunctiva are superficial structures that can be examined without the need for an ophthalmoscope. Therefore, the correct answer is the optic disc. Choices A, B, and D are incorrect because they are external structures that can be examined directly without the use of an ophthalmoscope.
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The nurse is caring for a 4-year-old client. What is the most appropriate pain scale for the nurse to use during the assessment?
- A. McGill Pain Scale
- B. FLACC Pain Scale
- C. CRIES Pain Scale
- D. Wong-Baker Pain Scale
Correct Answer: D
Rationale: The correct answer is the Wong-Baker Pain Scale. This scale is specifically designed for pediatric clients, including children as young as 3 years old, making it the most appropriate choice for a 4-year-old. It utilizes a simple visual scale with facial expressions that children can easily understand and use to express their pain levels. The FLACC and CRIES Pain Scales are also used for pediatric clients but are more focused on non-verbal cues and specific populations like infants or critically ill children. The McGill Pain Scale, on the other hand, is more complex and uses descriptive words, making it more suitable for adult clients who can better articulate their pain experiences.
Which of the following client groups should the nurse recognize as the fastest-growing segment of the homeless population?
- A. single, adult men
- B. single mothers with 2 or 3 children
- C. runaway adolescents
- D. single, adult women
Correct Answer: B
Rationale: Single mothers with two or three children are indeed the fastest-growing segment of the homeless population. These families, where the majority of children are under the age of five, make up more than one-third of the homeless population in the United States. While single, adult men have traditionally been the largest group in the homeless population, single mothers with children have been increasing in numbers. Runaway adolescents, although a significant group of homeless children, do not represent the fastest-growing segment of the homeless population. Single, adult women are not specified as the fastest-growing segment.
A client complains that her skin is redder than normal. The nurse notes the client's skin, documents hyperemia, and explains to the client that this condition is caused by which factor?
- A. Constriction of the underlying blood vessels
- B. An increased amount of bilirubin in the blood
- C. Increased perfusion of the surrounding tissues
- D. Excess blood in the dilated superficial capillaries
Correct Answer: D
Rationale: Hyperemia is an excess of blood in a part of the body. The skin over a hyperemic area usually becomes reddened or warm. The condition is caused by increased blood flow, local relaxation of arterioles, or obstruction of the outflow of blood from an area. Choice A is incorrect because constriction of blood vessels would lead to decreased blood flow, not excess blood. Choice B is incorrect as an increased amount of bilirubin in the blood is related to jaundice, not hyperemia. Choice C is incorrect because increased perfusion of the surrounding tissues would cause redness, not hyperemia.
A nurse reviewing a client's record notes that the result of the client's latest Snellen chart vision test was 20/80. The nurse interprets the client's results in which way?
- A. The client is legally blind.
- B. The client has normal vision.
- C. The client can read at a distance of 20 feet what a client with normal vision can read at 80 feet.
- D. The client can read at a distance of 80 feet what a client with normal vision can read at 20 feet.
Correct Answer: D
Rationale: When interpreting visual acuity testing results using the Snellen chart, the recorded numeric fraction represents the distance the client is standing from the chart and the distance a normal eye could read that particular line. A reading of 20/80 means that the client can read at 20 feet what a client with normal vision can read at 80 feet. This indicates visual impairment but does not meet the criteria for legal blindness, which is defined as best-corrected vision in the better eye of 20/200 or worse. Normal visual acuity is 20/20. Therefore, the correct interpretation is that the client can read at a distance of 80 feet what a client with normal vision can read at 20 feet. Choice A is incorrect because 20/80 does not meet the criteria for legal blindness. Choice B is incorrect as the client's vision is impaired. Choice C is incorrect because it reverses the interpretation of the fraction.
A nurse is preparing to test the function of cranial nerve XI. Which action does the nurse take to test this nerve?
- A. Asking the client to stick out his or her tongue and watching for tremors
- B. Touching the posterior pharyngeal wall with a tongue blade and noting the gag reflex
- C. Depressing the client's tongue with a tongue blade and noting pharyngeal function as the client says 'ah'
- D. Placing his or her hands on the client's shoulders and asking the client to shrug the shoulders against resistance from the nurse's hands
Correct Answer: D
Rationale: To assess the function of cranial nerve XI (spinal accessory nerve), the nurse examines the sternomastoid and trapezius muscles for equal size and strength. The correct method involves asking the client to rotate the head forcibly against resistance to the side of the chin and to shrug the shoulders against resistance from the nurse's hands. Choice A, asking the client to stick out the tongue and watching for tremors, is used to assess cranial nerve XII (hypoglossal nerve). Choice C, depressing the client's tongue with a tongue blade and noting pharyngeal function as the client says 'ah', is the technique for examining cranial nerves IX (glossopharyngeal nerve) and X (vagus nerve). Choice B, touching the posterior pharyngeal wall with a tongue blade and noting the gag reflex, is used to evaluate cranial nerves IX (glossopharyngeal nerve) and X (vagus nerve), not cranial nerve XI.