Correct Answer: D

Rationale: Rationale for Correct Answer D: Tympanostomy tubes are inserted into the eardrum to help drain fluid from the middle ear, relieve pressure, and prevent infections. This is important in children who have recurrent ear infections or fluid buildup. By allowing drainage, the tubes help improve hearing and reduce the risk of complications. Summary of Incorrect Choices: A) Incorrect - Tympanostomy tubes are placed in the middle ear, not the inner ear. B) Incorrect - Tympanostomy tubes are used for conductive hearing loss, not sensorineural loss. C) Incorrect - Tympanostomy tubes are not permanently inserted and are usually removed after a period of time once they are no longer needed.

Correct Answer: A

Rationale: The correct answer is A because a smooth, glossy dorsal surface of the tongue is abnormal in adults and may indicate glossitis or nutritional deficiencies. B is incorrect as a thin white coating is normal. Raised papillae (choice C) may indicate transient lingual papillitis but are not typically abnormal. Visible venous patterns (choice D) are normal on the ventral surface.

Correct Answer: B

Rationale: The correct answer is B: Basal cell carcinoma. The clinical presentation of a papule with rounded, pearly borders, central red ulcer, slow growth, and location on the nose is highly indicative of basal cell carcinoma. Basal cell carcinoma commonly presents with these characteristics and is the most common type of skin cancer. It is locally invasive but rarely metastasizes. A: Acne is a common skin condition characterized by comedones, papules, and pustules, not typically presenting with the described features. C: Malignant melanoma usually presents as an asymmetric, irregularly bordered, multicolored lesion with rapid growth and potential for metastasis. D: Squamous cell carcinoma typically presents as a scaly, crusted lesion with potential for metastasis, not showing the described features.

Correct Answer: B

Rationale: The correct answer is B: It is the most common type of glaucoma. Open-angle glaucoma is indeed the most common type, accounting for about 90% of all glaucoma cases. In open-angle glaucoma, the drainage angle of the eye remains open, but the trabecular meshwork becomes blocked over time. This leads to increased intraocular pressure, which can damage the optic nerve and result in vision loss. A, C, and D are incorrect: A: The symptoms mentioned (sensitivity to light, nausea, halos around lights) are more commonly associated with acute angle-closure glaucoma, not open-angle glaucoma. C: Immediate treatment is not necessarily needed for open-angle glaucoma as it progresses slowly, and treatment can vary based on the severity of the condition. D: Vision loss in open-angle glaucoma typically starts with the loss of peripheral vision, not central vision.

Correct Answer: A

Rationale: The correct answer is A because drooling is a common sign of teething in infants. The nurse's response should validate the mother's observation to build trust and rapport. Choice B is incorrect because teething can start as early as 3 months. Choice C is incorrect as drooling is a normal developmental milestone in infants. Choice D is incorrect as infants do not consciously control saliva production.