A patient with hearing loss by whisper test is further examined with a tuning fork, using the Weber and Rinne maneuvers. The abnormal results are as follows: bone conduction is greater than air on the left, and the patient hears the sound of the tuning fork better on the left. Which of the following is most likely?

Correct Answer: A

Rationale: Otosclerosis is a condition characterized by abnormal bone growth in the middle ear, specifically around the stapes bone. In cases of otosclerosis, the bone conduction is greater than air conduction on the affected side, which is seen in the scenario described. The Weber test localizes to the affected ear, meaning the patient hears the sound of the tuning fork better in the left ear in this case. This is because the abnormal bone growth can restrict the movement of the ossicles, leading to a conductive hearing loss. Otosclerosis typically affects one ear, and its presentation aligns with the results of the hearing tests performed in this case.

Correct Answer: C

Rationale: Given the patient's presentation of itching, anorectal pain, and tenesmus, along with rectal examination findings of generalized tenderness without prostate abnormalities, proctitis is the most likely diagnosis. Proctitis is inflammation of the rectal lining and is commonly associated with symptoms such as rectal pain, itching, tenesmus (feeling of incomplete defecation), and sometimes rectal bleeding. It can have various causes, including sexually transmitted infections (such as gonorrhea, chlamydia), inflammatory bowel disease, radiation therapy, or trauma.

Correct Answer: B

Rationale: When conducting a health history assessment, the components typically include the review of systems, present illness, and personal and social items. The review of systems involves asking specific questions related to each system of the body to gather comprehensive information about the patient's overall health. Present illness focuses on the current chief complaint and symptoms the patient is experiencing. Personal and social items encompass details such as lifestyle habits, family history, medical history, and social support systems. The thorax and lungs are typically assessed as part of the physical examination, not specifically in the health history documentation.

Correct Answer: D

Rationale: The most likely cause of the woman's symptom of stool leakage despite normal bowel movements is an anorectal fistula. An anorectal fistula is an abnormal, tunnel-like connection between the anal canal or rectum and the skin around the anus. In this case, the small opening anterior to the anus with surrounding erythema on examination suggests the presence of a fistula.

Correct Answer: D

Rationale: The most important question to ask in this scenario would be if the patient has tried to lose weight. Given the patient's significant unintentional weight loss (from 140 to 110 pounds in a year), especially in the context of a chronic cough and a long history of smoking, lung cancer becomes a top concern. Unintentional weight loss is a common symptom seen in patients with lung cancer. Therefore, understanding if the weight loss was intentional or unintentional can provide crucial information in the diagnostic evaluation for possible lung cancer.

Correct Answer: A

Rationale: Ethnicity is one of the factors used to estimate the 10-year risk of developing coronary heart disease. Different ethnic groups may have varying risks for heart disease based on genetic predisposition, lifestyle factors, and cultural practices. For example, individuals of South Asian descent have been found to have a higher risk of heart disease compared to other ethnic groups. Therefore, considering ethnicity is essential when assessing the overall risk of developing heart disease in an individual.

Correct Answer: A

Rationale: A hyperresonant percussion note is a more intense and booming sound heard during percussion of the thorax. This can occur when there is an increased amount of air present in the chest cavity. In the case of a large pneumothorax, which is the presence of air in the pleural space causing partial or complete collapse of the lung, the percussion note would be hyperresonant due to the increased air content in the thoracic cavity. Lobar pneumonia, pleural effusion, and empyema would typically produce dull or flat percussion notes due to the presence of fluid or solid material in the pleural space.

Correct Answer: A

Rationale: The most likely diagnosis for this patient's symptoms and signs is acute diverticulitis. His presentation of abdominal pain, constipation, and low-grade fever, along with tenderness over the left lower quadrant, is consistent with diverticulitis, which is inflammation or infection of small pouches (diverticula) that can develop in the colon. The history of recent onset of symptoms after consuming popcorn, typically a high-fiber food that can exacerbate diverticulitis, further supports this diagnosis. The negative fecal occult blood test makes more acute intra-abdominal processes like acute appendicitis less likely. Acute cholecystitis would present with right upper quadrant pain, and mesenteric ischemia typically presents with severe abdominal pain, nausea, and vomiting, as well as signs of abdominal distress.

Correct Answer: C

Rationale: A cough can be attributed to various anatomic regions. Cardiac conditions, such as heart failure or fluid overload, can lead to congestion in the lungs and irritation of the airway, resulting in a cough. Ophthalmologic, auditory, and endocrine regions are less commonly associated with causing a cough.