Nokea
Where is the best place to observe for the presence of petechiae in dark-skinned individuals?
- A. Face
- B. Buttocks
- C. Oral mucosa
- D. Palms and soles
Correct Answer: C
Rationale: Petechiae, small distinct pinpoint hemorrhages, are difficult to see in dark-skinned individuals unless they are in the mouth or conjunctiva.
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With the National Center for Health Statistics criteria, which body mass index (BMI)-for-age percentiles should indicate the patient is at risk for being overweight?
- A. 10th percentile
- B. 75th percentile
- C. 85th percentile
- D. 95th percentile
Correct Answer: C
Rationale: Children who have BMI-for-age greater than or equal to the 85th percentile and less than the 95th percentile are at risk for being overweight. Children who are greater than or equal to the 95th percentile are considered overweight. Children whose BMI is between the 10th and 75th percentiles are within normal limits.
Which explains why correcting strabismus in young children is important?
- A. Color vision may be lost.
- B. Amblyopia, a type of blindness, may result.
- C. Epicanthal folds may develop in the affected eye.
- D. Corneal light reflexes may fall symmetrically within each pupil.
Correct Answer: B
Rationale: By the age of 3 to 4 months, infants are able to fixate on one visual field with both eyes simultaneously. In strabismus, or cross-eye, one eye deviates from the point of fixation. If misalignment is constant, the weak eye becomes lazy, and the brain eventually suppresses the image produced from that eye. If strabismus is not detected and corrected by age 4 to 6 years, blindness from disuse, known as amblyopia, may occur. Color vision is not the only concern. Epicanthal folds are not related to amblyopia. In children with strabismus, the corneal light reflex will not be symmetric for each eye.
Which parameter correlates best with measurements of total muscle mass?
- A. Height
- B. Weight
- C. Skinfold thickness
- D. Upper arm circumference
Correct Answer: D
Rationale: Upper arm circumference is correlated with measurements of total muscle mass. Muscle serves as the bodys major protein reserve and is considered an index of the bodys protein stores. Height is reflective of past nutritional status. Weight is indicative of current nutritional status. Skinfold thickness is a measurement of the bodys fat content.
The nurse is having difficulty communicating with a hospitalized 6-year-old child. Which technique should be most helpful?
- A. Recommend that the child keep a diary.
- B. Provide supplies for the child to draw a picture.
- C. Suggest that the parent read fairy tales to the child.
- D. Ask the parent if the child is always uncommunicative.
Correct Answer: B
Rationale: Drawing is one of the most valuable forms of communication. Childrens drawings tell a great deal about them because they are projections of the childrens inner self. A diary should be difficult for a 6-year-old child, who is most likely learning to read. The parent reading fairy tales to the child is a passive activity involving the parent and child; it should not facilitate communication with the nurse. The child is in a stressful situation and is probably uncomfortable with strangers, not always uncommunicative.
During an otoscopic examination on an infant, in which direction is the pinna pulled?
- A. Up and back
- B. Up and forward
- C. Down and back
- D. Down and forward
Correct Answer: C
Rationale: In infants and toddlers, the ear canal is curved upward. To visualize the ear canal, it is necessary to pull the pinna down and back to the 6 to 9 oclock range to straighten the canal. In children older than age 3 years and adults, the canal curves downward and forward. The pinna is pulled up and back to the 10 oclock position. Up and forward and down and forward are positions that do not facilitate visualization of the ear canal.