Practice targeted AMC-style multiple-choice questions on leg pain.
A 78-year-old female on warfarin for chronic atrial fibrillation presents to the emergency department with a 24-hour history of increasing pain and discolouration in her right lower leg. She reports the pain is severe and worsening rapidly. She denies trauma or recent falls. Her INR this morning was 2.5 (target 2.0-3.0). Vital signs are stable: BP 130/80, HR 75, RR 16, Temp 36.8°C. Examination reveals the findings shown in the image. Considering the patient's history, current medication, and the clinical appearance depicted, what is the most appropriate immediate therapeutic intervention?
A 45-year-old woman presents to the clinic with a 2-week history of a painful, swollen right calf. She recently returned from a long-haul flight from Europe. On examination, her right calf is warm, erythematous, and tender to touch. A D-dimer test is positive. What is the most appropriate next step in management?
A 68-year-old female presents with right leg pain and skin changes after starting warfarin for atrial fibrillation 5 days ago. Her INR is currently 3.5. Examination reveals the findings in the image. What is the MOST appropriate next step in management?
A 31-year-old man presents with gradual onset lateral knee pain that worsens with running and has no history of trauma. The pain is localized above the joint line, and there is no swelling. What is the likely diagnosis?
A 72-year-old female on warfarin for chronic atrial fibrillation presents with a 2-day history of increasing pain and a developing lesion on her right lower leg. She denies trauma. Her INR is therapeutic at 2.5. Vitals are stable. Considering the clinical presentation and the image provided, what is the most appropriate immediate management?
A patient on warfarin presents with leg pain. INR is 3.5. Given the image, what is the MOST appropriate next step?
A 31-year-old man presents with gradual onset lateral knee pain that worsens with running. There is no history of trauma. The pain is localized above the joint line, and there is no swelling. What is the likely diagnosis?
A patient on warfarin presents with leg pain. INR is 3.5. Given the image, what is the MOST likely underlying cause?
A 70-year-old man with a history of atrial fibrillation presents with sudden onset of severe pain, pallor, and coldness in his left leg, extending below the knee. On examination, the leg is cool to touch, pale, and distal pulses (popliteal, dorsalis pedis, posterior tibial) are absent. Sensation is diminished below the ankle, but he can still move his toes slightly. Capillary refill is delayed. Which of the following is the most appropriate initial diagnostic investigation?
A 72-year-old woman presents with increasing pain in her right leg. She has been on warfarin for atrial fibrillation for the past 5 days. Her INR is currently 3.5. Examination reveals the findings shown. What is the MOST appropriate next step in management?
A patient on warfarin presents with leg pain. INR is 3.5. Given the image, what is the MOST appropriate initial pharmacological intervention?
A 68-year-old woman on warfarin for chronic atrial fibrillation presents with increasing pain in her right leg over the past 48 hours. Her INR is 4.0. Examination reveals the findings in the image. What is the MOST likely underlying cause?
A 68-year-old female presents with right leg pain and skin changes after starting warfarin for atrial fibrillation 5 days ago. Her INR is currently 3.5. Examination reveals the findings in the image. What is the MOST appropriate next step in management?