Correct Answer: C

Rationale: The correct answer is C because the frontal sinuses are indeed fairly well developed at birth. This is true as the frontal sinuses start developing around the age of 7-8 years but are present in a rudimentary form at birth. This is because the frontal bone grows rapidly in the first few years of life, allowing for the development of the frontal sinuses. Choice A is incorrect because the sphenoid sinuses are not at full size at birth; they continue to develop throughout childhood. Choice B is incorrect as the maxillary sinuses reach full size around the teenage years, not after puberty. Choice D is incorrect as the frontal sinuses are also present at birth, along with the maxillary and ethmoid sinuses.

Correct Answer: A

Rationale: Step-by-step rationale for why choice A (Tachycardia) is correct: 1. Hyperthyroidism leads to increased production of thyroid hormones. 2. Thyroid hormones can increase metabolic rate and heart rate. 3. Tachycardia is a common symptom of hyperthyroidism due to increased metabolic demand. 4. Therefore, the nurse would most likely find tachycardia on examination in a patient with hyperthyroidism. Summary of why other choices are incorrect: B: Constipation - Constipation is more commonly associated with hypothyroidism, not hyperthyroidism. C: Rapid dyspnea - Dyspnea (shortness of breath) is not a typical symptom of hyperthyroidism. D: Atrophied, nodular thyroid - Hyperthyroidism often presents with an enlarged, not atrophied, thyroid gland due to overactivity. Nodules may be present in conditions like thyroid cancer, but not specific to hyper

Correct Answer: A

Rationale: The correct answer is A: this is most likely serous otitis media. In a child with chronic ear infections, amber-yellow tympanic membrane color and air bubbles suggest fluid accumulation behind the eardrum, characteristic of serous otitis media. The occasional hearing loss and popping sound with swallowing are also common symptoms. Serous otitis media is a non-infectious condition caused by Eustachian tube dysfunction. Choice B: Acute purulent otitis media presents with more severe symptoms like fever and severe ear pain, which are not mentioned in the case. Choice C: Cholesteatoma is a more serious condition characterized by a cyst-like growth in the middle ear, not just fluid accumulation as seen in this case. Choice D: Perforation typically presents with a visible hole in the eardrum and is not consistent with the findings of fluid and air bubbles in this case.

Correct Answer: B

Rationale: The correct answer is B: This is a bifid uvula, which is a common occurrence in some Aboriginal groups. 1. A bifid uvula is a condition where the uvula is split or divided, which is a common variation seen in some Aboriginal populations. 2. Cleft palate is a different condition involving a gap in the roof of the mouth, not specifically related to Aboriginal people. 3. Uvular injury is not a common cause of a split uvula in children, so reporting to authorities is unnecessary. 4. Torus palatinus is a bony growth on the roof of the mouth and not related to a split uvula or specific to Aboriginal populations.

Correct Answer: D

Rationale: The correct answer is D because testing for strabismus by performing the corneal light reflex test is crucial in diagnosing "lazy eye" or amblyopia in children. Strabismus is a condition where the eyes are misaligned, leading to poor vision in one eye. By performing the corneal light reflex test, the nurse can assess if the child's eyes are aligned or if there is deviation, which could indicate lazy eye. Options A, B, and C are incorrect as they do not specifically address the assessment of strabismus, which is the key indicator for lazy eye in this scenario.