health assessment practice questions nursing

Correct Answer: B

Rationale: The correct answer is B: A dark retinal background. This is because individuals of African descent typically have a higher concentration of melanin in their eyes, resulting in a darker retinal background. This can affect the appearance of the fundus during eye examinations. Incorrect choices: A: Increased night vision - Night vision is not directly influenced by melanin levels in the eyes and is more related to the function of rods and cones in the retina. C: Increased photosensitivity - Melanin provides some protection against UV light, so individuals with darker retinas may have lower photosensitivity. D: Narrowed palpebral fissures - Palpebral fissures refer to the opening between the eyelids and are not typically influenced by melanin levels in the eyes.

Correct Answer: B

Rationale: The correct answer is B: pearly grey and slightly concave. This is because a healthy tympanic membrane should appear pearly grey in color and slightly concave in shape. The pearly grey color indicates normal transparency and reflection of light, while the slightly concave shape is indicative of a normal eardrum. Choice A is incorrect as a light pink color and slight bulge are not characteristic of a healthy tympanic membrane. Choice C is incorrect because a pulled-in appearance at the base of the cone of light suggests retraction, which is abnormal. Choice D is incorrect as a whitish color with a small fleck of light is not a typical presentation of a healthy tympanic membrane.

Correct Answer: D

Rationale: The correct answer is D: Enlarged regional lymph nodes. In otitis externa, there may be regional lymphadenopathy due to inflammation and infection. Rhinorrhea (A) is associated with upper respiratory infections, not otitis externa. Periorbital edema (B) is seen in conditions like periorbital cellulitis. Pain over the maxillary sinuses (C) is indicative of sinusitis, not otitis externa.

Correct Answer: B

Rationale: Correct Answer: B Rationale: 1. Rubbing alcohol or 2% acetic acid eardrops help to maintain the pH balance in the ear canal, making it less conducive to bacterial growth. 2. These eardrops also help to dry out excess moisture, reducing the risk of otitis externa. 3. By using these eardrops after every swim, the student can prevent the recurrence of otitis externa. Summary of other choices: A: Using a cotton-tipped swab can push wax deeper into the ear canal, increasing the risk of infection. C: Irrigating the ears can introduce water into the ear canal, potentially worsening the condition. D: Mineral oil and hydrogen peroxide can be harsh on the delicate skin of the ear canal, causing irritation.

Correct Answer: D

Rationale: The correct answer is D because tracheal shift due to thyroid enlargement occurs when the thyroid gland enlarges and displaces the trachea to the opposite side. This is a common clinical finding in conditions like a goiter. Other choices are incorrect because: A is incorrect as tracheal shift is not related to systole; B is incorrect as tracheal shift is typically caused by a mass pushing the trachea; C is incorrect as pleural adhesions don't typically cause tracheal shift.