Which of the following is an indication for microwave diathermy?

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: The correct answer is D because diplopia with one eye covered suggests a problem with the affected eye itself, such as an irregularity in the cornea or lens causing refractive errors. Weakness of CN III (A) would cause eye movement issues, not diplopia with one eye covered. Weakness of CN IV (B) would result in vertical diplopia, not diplopia with one eye covered. A lesion of the brainstem (C) can lead to various oculomotor issues but wouldn't specifically cause diplopia with one eye covered.

Correct Answer: C

Rationale: The correct answer is C: Ureteral stone. The progression of pain from under the lower ribs to the lateral abdomen and then to the right lower quadrant is characteristic of a ureteral stone passing from the kidney towards the bladder. This pattern is known as "Loin to groin pain." Appendicitis typically presents with pain starting in the right lower quadrant without a gradual progression. Dysmenorrhea involves cramping pelvic pain related to menstruation. Ovarian cyst pain is usually localized to the lower abdomen and may not follow the described pattern.

Correct Answer: C

Rationale: The correct answer is C: Calf. Atherosclerosis in the lower extremities typically presents as intermittent claudication, which is characterized by pain, cramping, or fatigue in the calf muscles during physical activity. This occurs due to insufficient blood flow to the muscles affected by the narrowed arteries. Pain in the thigh (A), knee (B), or ankle (D) would not be as specific for atherosclerosis in the lower extremities, as the calf is the most common site for this condition.

Correct Answer: D

Rationale: The correct answer is D because the otoscope is a medical device specifically designed to examine the ear canal and tympanic membrane. The otoscope has a light source and a magnifying lens that allows the healthcare provider to visualize these structures. Choice A is incorrect because the otoscope is not typically used to direct light onto the sinuses. Choice B is incorrect as the otoscope uses a long, narrow speculum to visualize the ear, not a short, broad speculum. Choice C is incorrect because the otoscope is used to examine the external ear canal and tympanic membrane, not the internal ear structures.