Correct Answer: A

Rationale: The correct answer is A: tinea capitis. Tinea capitis is a fungal infection of the scalp that can cause hair loss, scaling, and breakage of hair. In this case, the patient's symptoms of hair loss, patchy hair breakage, and scaling on the scalp are consistent with tinea capitis. The nurse should suspect tinea capitis based on the presentation of these specific symptoms in the patient. Summary: - B: tinea corporis is a fungal infection of the skin, not the scalp, so it is not the most likely cause of the patient's symptoms. - C: toxic alopecia refers to hair loss due to exposure to toxins, which is unlikely in this case based on the symptoms described. - D: seborrheic dermatitis is a common skin condition that causes redness, scaly patches, and dandruff on the scalp, but it does not typically cause hair loss in the same way as tinea capitis

Correct Answer: B

Rationale: The correct answer is B: acute otitis media. In this case, the presentation of a bright red tympanic membrane and absence of the light reflex are indicative of inflammation and fluid accumulation in the middle ear, which are classic signs of acute otitis media. This condition commonly occurs in young children, especially after a recent upper respiratory infection. Incorrect choices: A: Fungal infection is less likely in this case as the symptoms are more consistent with acute bacterial infection seen in otitis media. C: Rupture of the drum would typically present with sudden relief of pain and discharge from the ear, which is not described in the scenario. D: Blood behind the drum (hemotympanum) is uncommon in children with acute otitis media and would usually be associated with trauma or barotrauma.

Correct Answer: C

Rationale: The correct answer is C because testing for color vision once between the ages of 4 and 8 is appropriate to assess any potential color vision deficiencies. This age range is crucial as color vision development is mostly completed by the age of 8. Annual checks (A) are not necessary unless there are specific concerns. Asking the child to identify clothing color (B) may not be a reliable indicator of color vision deficiency. No information is provided for option D.

Correct Answer: B

Rationale: The correct answer is B: not palpable. In healthy adults, most lymph nodes are not palpable as they are typically small and not easily detectable through touch. This indicates normal lymphatic function and absence of significant inflammation or infection. Choices A, C, and D describe characteristics of abnormal lymph nodes, such as being shotty, large/firm/fixed, or rubbery/discrete/mobile, respectively, which are indicative of pathological conditions like infection, malignancy, or inflammation. Therefore, the absence of palpable lymph nodes in a healthy individual is the expected norm.

Correct Answer: B

Rationale: The correct answer is B: When the patient first noticed the lesion. This information is crucial for determining the duration of the ulceration, aiding in diagnosing potential causes like trauma or infections. Nutritional status (Choice A) may not be directly related to the specific lesion. Whether the patient has had a recent cold (Choice C) is less relevant unless there are other symptoms present. Exposure to sick animals (Choice D) is not pertinent to the mouth ulceration. Therefore, obtaining information on when the patient first noticed the lesion is the most important for proper assessment and treatment planning.