You are listening carefully for S splitting. Which of the following will help?

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: B

Rationale: Research studies have shown that for every increment of 20 mm Hg in systolic blood pressure and 10 mm Hg in diastolic blood pressure, the cardiovascular risk approximately doubles. Therefore, the cardiovascular risk increases by 50% for each increment of 20 mm Hg systolic and 10 mm Hg diastolic in blood pressure. This underlines the importance of maintaining healthy blood pressure levels to reduce the risk of cardiovascular diseases.

Correct Answer: D

Rationale: The patient's presentation of new onset tremors, slow movements with shuffling steps (bradykinesia), decreased facial mobility, and blunt expression are characteristic features of Parkinson's disease. Parkinson's disease is a neurodegenerative disorder that affects movement, typically presenting with tremors, rigidity, and bradykinesia. The presence of these symptoms in this patient, along with the absence of any other medical conditions or medication use, points toward a diagnosis of Parkinson's disease. Other conditions like Cushing's syndrome, nephrotic syndrome, and myxedema are unlikely based on the patient's clinical presentation.

Correct Answer: D

Rationale: A rectal polyp is a growth that originates from the inner lining of the rectum and protrudes into the rectal canal. It may present as a soft, smooth, nontender mass on digital rectal examination. Rectal polyps are usually benign, but some may have the potential to become cancerous if left untreated. Therefore, it is important to evaluate and remove polyps to prevent complications. In this case, the description of a pedunculated mass on the posterior wall of the rectum is most suggestive of a rectal polyp.

Correct Answer: A

Rationale: When crackles, wheezes, or rhonchi clear with a cough, it is suggestive of bronchitis. Bronchitis is inflammation of the bronchial tubes, often due to a viral infection, leading to the production of excess mucus. The characteristic sounds such as crackles, wheezes, or rhonchi can be heard on auscultation due to the presence of mucus in the airways. The act of coughing helps to clear the mucus from the airways, resulting in the temporary resolution of these abnormal sounds. In contrast, asthma, cystic fibrosis, and heart failure are not typically associated with crackles, wheezes, or rhonchi that clear with a cough.

Correct Answer: A

Rationale: The raised, dark red rash that does not blanch when pressed on, typically known as erythema nodosum, is a common skin manifestation of systemic lupus erythematosus (SLE). Given Mrs. Hill's history of SLE, it is likely that her rash is related to her autoimmune condition rather than an exposure to a chemical or an allergic reaction. It is important for her to discuss this new symptom with her healthcare provider to ensure appropriate management and monitoring of her lupus.

Correct Answer: D

Rationale: HPV (human papillomavirus) infection is a very common sexually transmitted infection (STI) that can affect both men and women. It is the most common STI in the United States. While most cases of HPV infection are asymptomatic and resolve on their own, certain high-risk strains of HPV can lead to the development of various cancers, including cervical cancer. Therefore, HPV infections do cause a small but important number of cervical cancers, making option D the correct choice. Regular screening, such as Pap smears and HPV testing, are crucial for early detection and effective management of HPV-related abnormalities that could progress to cervical cancer.

Correct Answer: B

Rationale: The presentation of multiple burning erosions on the shaft of the penis along with tender inguinal adenopathy is indicative of genital herpes caused by the herpes simplex virus (HSV). Primary herpes simplex infection typically presents with painful ulcers and lymphadenopathy. The ulcers are often shallow with well-defined borders and can be associated with systemic symptoms such as fever and malaise. In contrast, primary syphilis is characterized by a painless chancre at the site of infection, usually on the genitals. Chancroid can also present with painful ulcers, but it is less common in developed countries. Gonorrhea typically presents with urethral discharge, dysuria, or other symptoms of urethritis, rather than erosions on the penis shaft.

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.