A 15-year-old high school sophomore comes to the clinic for evaluation of a 3-week history of sneezing; itchy, watery eyes; clear nasal discharge; ear pain; and nonproductive cough. Which is the most likely pathologic process?

Correct Answer: C

Rationale: The symptoms described, such as sneezing, itchy watery eyes, clear nasal discharge, ear pain, and nonproductive cough, are classic signs of allergic rhinitis, commonly known as seasonal allergies. Allergic rhinitis is an inflammatory response triggered by allergens in the environment such as pollen, dust mites, or pet dander. The immune system overreacts to these allergens, releasing histamine and other chemicals that cause the symptoms experienced by the patient. In this case, the most likely pathologic process underlying the symptoms is an allergic response rather than infection, inflammation, or vascular issues.

Correct Answer: C

Rationale: The symptoms described, such as sneezing, itchy watery eyes, clear nasal discharge, ear pain, and nonproductive cough, are classic signs of allergic rhinitis, commonly known as seasonal allergies. Allergic rhinitis is an inflammatory response triggered by allergens in the environment such as pollen, dust mites, or pet dander. The immune system overreacts to these allergens, releasing histamine and other chemicals that cause the symptoms experienced by the patient. In this case, the most likely pathologic process underlying the symptoms is an allergic response rather than infection, inflammation, or vascular issues.

Correct Answer: D

Rationale: Audiometric testing is a very sensitive method for detecting hearing loss. It involves a series of tests that measure a person's ability to hear sounds at various frequencies and volumes. These tests can detect even subtle changes in hearing ability and provide detailed information on the type and degree of hearing loss. The whisper test and finger rub test are basic screening tests and are not as sensitive or comprehensive as audiometric testing. The tuning fork test is also used in evaluating hearing loss, but it is not as accurate or sensitive as audiometric testing. Overall, audiometric testing is considered the gold standard for diagnosing hearing loss due to its high sensitivity and ability to provide detailed information on the individual's hearing capabilities.

Correct Answer: A

Rationale: The most appropriate action in this situation is to ask the patient if it's okay to carry out the visit with both people in the room. This shows respect for the patient's autonomy and privacy. Some patients may feel more comfortable discussing personal information without a family member present, while others may prefer having their spouse or family member involved in the conversation. By asking for the patient's preference, you are ensuring that they have the opportunity to control who is present during the consultation and are upholding their right to confidentiality.

Correct Answer: A

Rationale: In order to listen carefully for S splitting, one should use the diaphragm with light pressure over the 2nd right intercostal space. S splitting refers to a split of the second heart sound (S2) into its two components - A2 and P2. The A2 component is normally heard as the main heart sound when the aortic valve closes, and the P2 component is heard when the pulmonic valve closes. By placing the diaphragm lightly over the 2nd right intercostal space, one can best auscultate the aortic area and listen for the timing and splitting of the S2 components. Using the bell or applying firm pressure may not allow for optimal detection of S splitting in this specific case.

Correct Answer: C

Rationale: Diminished radial pulses may be seen in patients with arterial emboli. Arterial emboli are blood clots that travel through the bloodstream and get lodged in a blood vessel, blocking blood flow to a certain area. When an embolus affects the arteries supplying the arm, it can lead to diminished pulses in the affected arm, such as the radial pulse in the wrist. This diminished pulse is due to decreased blood flow to the area beyond the blockage caused by the embolus. This distinguishes arterial emboli from the other options listed, as aortic insufficiency, hyperthyroidism, and early "warm" septic shock typically do not cause isolated diminished radial pulses.

Correct Answer: B

Rationale: In the given scenario, being a 35-year-old archaeologist with fair skin, a family history of melanoma, and many freckles scattered across her skin are all risk factors for melanoma. Age (choice A) is a relevant risk factor as melanoma incidence increases with age. Actinic lentigines (choice C), also known as sunspots, are precancerous skin lesions that can increase the risk of developing melanoma. Heavy sun exposure (choice D) is a significant risk factor as cumulative sun exposure over time can contribute to the development of melanoma.

Correct Answer: D

Rationale: The most likely cause of the 19-year-old college sophomore's joint pain is Lyme disease. The presentation of a red spot shaped like a target (erythema migrans) that spreads, along with joint pain, is classic for Lyme disease. Additionally, the history of camping in an area known to have ticks and the history of using insect repellent support the likelihood of a tick-borne illness like Lyme disease.

Correct Answer: B

Rationale: The dullness in the last intercostal space in the anterior axillary line on the left side with a deep breath is suggestive of splenomegaly. However, this finding alone is not definitive for an enlarged spleen. The size of the spleen can vary, and further examination is required to confirm if the spleen is indeed enlarged. Therefore, Option B is the most appropriate choice as it indicates that the spleen is possibly enlarged, and close attention should be paid to further examination to confirm its status. Further workup, such as imaging studies or blood tests, may be necessary to evaluate the size and function of the spleen in this case.