Correct Answer: C

Rationale: The characteristics described - being louder and higher in pitch, with a short silence between inspiration and expiration, and expiration being longer than inspiration - are indicative of the bronchial lung sound. The bronchial sound is typically heard over the trachea area and can be louder and higher-pitched than other lung sounds due to conduction of sounds through the bronchial tree. The short silence between inspiration and expiration is due to the short expiratory phase during which air rushes out quickly, whereas expiration is longer than inspiration in this sound due to the increased airflow velocity during expiration.

Correct Answer: B

Rationale: The information provided about Mr. M's shortness of breath being present for the past 10 days, worsening with activity, and relieved by rest are all objective findings. These are measurable and observable facts that can be documented by healthcare professionals through physical examination, assessment, and potentially diagnostic tests. Subjective information would involve Mr. M's personal feelings or descriptions of his symptoms, which are not included in the given information.

Correct Answer: C

Rationale: The ankle-brachial index (ABI) is the appropriate test to initially evaluate for peripheral vascular disease in this case. ABI is a simple, non-invasive test that compares the blood pressure in the arms to the blood pressure in the legs. A lower ABI value indicates a higher likelihood of peripheral arterial disease (PAD). Given the patient's presentation of leg swelling and risk factors like smoking and hypertension, ABI can help determine the presence and severity of PAD, guiding further management and treatment decisions.

Correct Answer: A

Rationale: The patient's presentation of sudden-onset spinning sensation triggered by head position changes, accompanied by nausea and vomiting without tinnitus, is characteristic of benign positional vertigo (BPV). BPV is caused by displaced otoconia (calcium crystals) within the semicircular canals of the inner ear. These crystals disrupt the normal flow of fluid in the inner ear, leading to false signals being sent to the brain about head movement. This results in brief episodes of vertigo triggered by specific head positions.

Correct Answer: B

Rationale: The most likely pathologic process based on the patient's symptoms and history would be an inflammatory process. The patient's joint pain, fever, and family history of rheumatoid arthritis suggest the possibility of an autoimmune inflammatory condition like rheumatoid arthritis. Rheumatoid arthritis is a chronic inflammatory disorder that primarily affects the joints, causing pain, swelling, and stiffness. The bilateral involvement of the wrists and fingers along with a family history of rheumatoid arthritis make this diagnosis more likely than an infectious, hematologic, or traumatic process in this case.