Correct Answer: A

Rationale: Mr. Patel's case involves an enlarged liver, which warrants further investigation to determine the underlying cause. An ultrasound of the liver would provide valuable information regarding the size, shape, and texture of the liver, helping to identify any potential abnormalities such as liver cirrhosis, fatty liver disease, or liver tumors. This imaging study can also help differentiate between different conditions that may be causing the liver enlargement, guiding subsequent diagnostic and treatment decisions. Therefore, obtaining an ultrasound of the liver is the most appropriate next step in evaluating Mr. Patel's condition.

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: B

Rationale: Coronary artery disease (CAD) is a significant risk factor for peripheral vascular disease (PVD). CAD is a condition where plaque builds up in the coronary arteries that supply blood to the heart muscle. This process is called atherosclerosis. Similarly, in PVD, atherosclerosis occurs in the peripheral arteries, affecting blood flow to the extremities, most commonly the legs. Individuals with CAD often have systemic atherosclerosis, which puts them at higher risk for developing PVD. Therefore, it is important for the 72-year-old teacher with CAD to be aware of this risk factor for PVD and consider appropriate screening and preventive measures.

Correct Answer: B

Rationale: Since the baby is exhibiting jaundice, which is a condition characterized by the yellowing of the skin, it is important to inquire about the family history of liver diseases. Jaundice can be a sign of liver dysfunction or disease, so understanding the family history of liver diseases can provide valuable insights into potential underlying causes for the baby's jaundice. In this case, it is crucial to explore this area further to determine if there may be any genetic predispositions or familial conditions that could be contributing to the baby's presentation of jaundice.

Correct Answer: D

Rationale: Ischemic symptoms in the upper calf are indicative of peripheral artery disease affecting the tibial or peroneal arteries. These arteries are responsible for supplying blood to the lower leg and foot region, hence causing symptoms such as pain, cramping, or numbness in the upper calf area. Symptoms in the lower calf would typically be associated with more proximal arterial segments like femoral or iliac arteries. So, option D correctly matches the ischemic symptoms with the appropriate vascular supply.