Steve has just seen a 5-year-old girl who wheezes when exposed to cats. The patient's family history is positive for asthma. You think the child most likely has asthma. What have you just accomplished?

Correct Answer: C

Rationale: By connecting the patient's presenting symptoms (wheezing when exposed to cats) and family history of asthma, you have identified asthma as the most likely diagnosis for the 5-year-old girl. This initial conclusion, based on the available information, is known as a working diagnosis. Further evaluation and testing may be required to confirm the diagnosis, but at this stage, you have established a preliminary understanding of the likely condition affecting the patient.

Correct Answer: B

Rationale: The description of dark, granular material resembling coffee grounds in the vomitus suggests upper gastrointestinal bleeding. One common cause of upper GI bleeding is a peptic ulcer, which can present with symptoms such as vomiting blood or coffee ground material. Peptic ulcers can develop in the stomach or the upper part of the small intestine (duodenum). Risk factors for peptic ulcers include infection with Helicobacter pylori bacteria, the use of nonsteroidal anti-inflammatory drugs (NSAIDs), smoking, and alcohol consumption. Prompt evaluation and management are necessary in cases of upper GI bleeding to address the underlying cause and prevent complications.

Correct Answer: B

Rationale: Leaning forward in the upright position increases venous return and systemic vascular resistance, which can help accentuate the intensity of aortic regurgitation murmur. This position helps to bring the heart closer to the chest wall, making the murmur easier to auscultate and potentially increasing its intensity.

Correct Answer: B

Rationale: Given the information provided about Jim's recent separation from his wife after a long marriage, coupled with the fact that he still experiences early morning erections, the likely cause for his sexual function difficulties is psychological issues. Separation, divorce, or relationship problems can have a significant impact on a person's sexual function due to emotional stress, anxiety, depression, or other mental health issues. In Jim's case, the presence of early morning erections suggests that there may not be a physiological issue like decreased testosterone levels, abnormal circulation, or impaired neural innervation. Instead, the situation seems more related to his emotional state and psychological well-being following the separation. It would be advisable for Jim to seek counseling or therapy to address these psychological factors affecting his sexual function.

Correct Answer: C

Rationale: In diabetic ketoacidosis (DKA), the body is in a state of metabolic acidosis due to the accumulation of ketones in the blood. One of the compensatory mechanisms to decrease the acidity in the body is increased breathing, known as Kussmaul breathing. This type of breathing is characterized by a rapid and deep pattern to blow off excess carbon dioxide and decrease the acidity of the blood. Therefore, in a patient with DKA, you would expect to observe rapid and deep breathing.

Correct Answer: C

Rationale: The symptoms described, including decreased air movement, high-pitched whistling (wheezing) on expiration in all lobes, and resonant lungs on percussion, are characteristic findings of asthma. Asthma is a chronic respiratory condition characterized by airway inflammation, bronchoconstriction, and increased mucus production, leading to symptoms like wheezing, shortness of breath, chest tightness, and cough. The presence of wheezing, particularly on expiration, is a classic sign of asthma. In contrast, spontaneous pneumothorax would typically present with sudden chest pain and shortness of breath, accompanied by hyperresonant percussion notes due to trapped air in the pleural space. COPD, a chronic lung condition characterized by progressive airflow limitation, would often present with symptoms such as chronic cough, sputum production, and dyspnea on exertion. Pneumonia is an infection of the lung tissue,

Correct Answer: D

Rationale: Prostate cancer is more prevalent in certain ethnic groups, with African-American men having the highest risk of developing prostate cancer compared to men of other ethnicities. Additionally, men of Caribbean and West African descent also have an increased risk compared to men of Asian descent. This indicates that ethnicity plays a role in the risk of developing prostate cancer.

Correct Answer: B

Rationale: Even after a unilateral mastectomy, women should continue to self-examine and have regular clinical examinations for any signs of recurrence or new masses. It is important to closely monitor the surgical scar area for any changes or abnormalities, as breast cancer can still occur in the remaining breast tissue. Regular breast examinations remain important in the early detection of any potential issues, even after mastectomy.

Correct Answer: D

Rationale: The description provided indicates a presentation consistent with gonococcal arthritis. Gonococcal arthritis is an infectious arthritis caused by the bacteria Neisseria gonorrhoeae. Symptoms typically include red, swollen, and painful joints, especially affecting the distal joints of the limbs. The presence of papules, pustules, and vesicles on reddened bases at the distal extremities is characteristic of disseminated gonococcal infection. In women, the DIP joint involvement in the finger can be indicative of this condition. Prompt diagnosis and treatment with antibiotics are essential to prevent complications associated with gonococcal arthritis. It is important to consider a sexually transmitted infection like gonorrhea in young patients presenting with joint symptoms and cutaneous findings.