Correct Answer: C

Rationale: The correct answer is C: In an individual who is severely dehydrated. Decreased skin turgor is a clinical sign of dehydration, indicating loss of skin elasticity due to fluid loss. Severe dehydration leads to decreased skin turgor as the skin loses its ability to recoil when pinched. In cases of severe obesity (choice A), skin turgor is usually normal or increased due to excess adipose tissue. During childhood growth spurts (choice B), skin turgor is typically unaffected. Connective tissue disorders like scleroderma (choice D) can lead to changes in skin texture and appearance, but not necessarily decreased skin turgor.

Correct Answer: D

Rationale: The correct answer is D: Elongated head with heavy eyebrow ridge. Paget's disease is a bone disorder characterized by abnormal bone remodeling, leading to enlarged and deformed bones. The elongated head and heavy eyebrow ridge are typical features seen in individuals with Paget's disease due to overgrowth of bones in the skull. A: Positive MacEwen's sign - This finding is associated with congenital hip dysplasia, not Paget's disease. B: Premature closure of the sagittal suture - This is a characteristic finding in craniosynostosis, not Paget's disease. C: Headache, vertigo, tinnitus, and deafness - These symptoms are more indicative of an inner ear disorder or vestibular dysfunction, not Paget's disease.

Correct Answer: C

Rationale: The correct answer is C: In an individual who is severely dehydrated. Decreased skin turgor is a clinical sign of dehydration, indicating loss of skin elasticity due to fluid loss. Severe dehydration leads to decreased skin turgor as the skin loses its ability to recoil when pinched. In cases of severe obesity (choice A), skin turgor is usually normal or increased due to excess adipose tissue. During childhood growth spurts (choice B), skin turgor is typically unaffected. Connective tissue disorders like scleroderma (choice D) can lead to changes in skin texture and appearance, but not necessarily decreased skin turgor.

Correct Answer: D

Rationale: The Romberg test assesses the maintenance of standing balance by having the patient stand with feet together, arms at the sides, and eyes closed. If the patient sways or loses balance, it may indicate proprioceptive deficits. Conductive hearing loss (A) is related to sound transmission issues in the outer or middle ear, not balance. Lateralization of hearing (B) relates to distinguishing sound direction. Sensorineural loss (C) involves inner ear or auditory nerve damage, not balance. Therefore, the correct answer is D as the Romberg test specifically evaluates standing balance.

Correct Answer: D

Rationale: The correct answer is D: Second-hand cigarette smoke. Exposure to second-hand smoke can irritate and inflame the lining of the Eustachian tube, making young children more susceptible to ear infections. This is supported by research showing a clear link between exposure to cigarette smoke and increased rates of ear infections in children. Family history (A) may contribute to genetic predisposition but is not a direct risk factor. Air conditioning (B) does not directly cause ear infections. Excessive cerumen (C) can lead to blockages but is not a primary risk factor for infections.