Surgery

A 72-year-old man undergoes an elective thoracic endovascular aortic repair (TEVAR) for an expanding descending thoracic aortic aneurysm. The procedure is technically successful, and no endoleaks are identified on the final angiogram. Four hours after arriving in the intensive care unit, the patient reports a new-onset inability to move his legs. His blood pressure is 110/70 mm Hg, and his heart rate is 86/min. Physical examination reveals 0/5 motor strength in both lower extremities and flaccid muscle tone. There is a complete loss of pain and temperature sensation below the umbilicus. However, proprioception and vibratory sensation are fully preserved in the bilateral toes. Bilateral femoral, popliteal, and pedal pulses are 2+ and symmetric. In addition to optimizing systemic mean arterial pressure, which of the following is the most appropriate next step in management?

For each of the following patients presenting with a surgical condition of the breast or endocrine system, select the most appropriate operative intervention.

Correlate each of the described high-acuity cardiothoracic and vascular surgical scenarios with the most appropriate definitive therapeutic intervention.

Paramedics rush a 24-year-old male to the trauma bay following a high-velocity car crash. He is comatose upon arrival. Vital signs show a blood pressure of 185/100 mm Hg and a heart rate of 48/min. His Glasgow Coma Scale score is 6 (Eyes 1, Verbal 2, Motor 3). Neurological assessment reveals a left pupil that measures 7 mm and does not react to light, whereas the right pupil is 3 mm and reactive. The patient's right arm and leg exhibit rigid extension when a painful stimulus is applied.

Arrange the following interventions in the optimal chronological order for managing this patient:

Match each patient's clinical presentation with the most appropriate next step in surgical or medical management.

A 73-year-old female patient arrives at the emergency department reporting a sudden onset of severe, unrelenting pain in her left leg that began two hours ago. She has a medical history of nonvalvular atrial fibrillation. She takes a beta-blocker for rate control but admits to stopping her oral anticoagulant medication three weeks ago. On physical examination, her left lower extremity is pale and cold from the knee down. She reports reduced sensation over the dorsum of her left foot and has difficulty moving her toes. Bilateral femoral pulses are palpable and bounding. Doppler ultrasound confirms the complete absence of popliteal and dorsalis pedis pulses in the left leg. The right lower extremity has normal palpable pulses and is warm to the touch. Vital signs show an irregular heart rate of 112/min and a blood pressure of 138/86 mmHg. Which of the following is the most appropriate initial intervention for this patient's current condition?

While recovering in the surgical intensive care unit, a 35-year-old male patient demonstrates a precipitous decline in his level of consciousness. He sustained a severe traumatic brain injury in a high-speed vehicular collision $48$ hours prior. Current vital signs reveal a blood pressure of $185/110 \text{ mmHg}$, a heart rate of $46 \text{ min}^{-1}$, and an irregular respiratory rate of $8 \text{ min}^{-1}$. Neurologic evaluation reveals that the right pupil is $8 \text{ mm}$ and nonreactive to light, whereas the left pupil is $3 \text{ mm}$ and briskly reactive. The right globe is deviated inferiorly and laterally. Application of a painful stimulus elicits rigid extension of the left arm and leg. What is the most appropriate immediate pharmacologic or procedural intervention for this patient?

Match each traumatic cervical spine fracture to its most characteristic mechanism of injury, primary structural finding, and major clinical consequence.

A physician is directing the care of a newly admitted patient who has a history of prior gynecologic surgery and now presents with obstipation, bilious vomiting, and severe, paroxysmal abdominal cramping. Physical examination reveals marked abdominal distension with high-pitched bowel sounds, but no rebound tenderness or rigidity. The physician asks the surgical team to outline the standard algorithmic pathway for this condition, assuming the patient does not exhibit immediate signs of clinical deterioration but eventually fails to resolve the obstruction with nonoperative measures.

Arrange the following interventions in the correct sequential order from initial presentation to final surgical resolution.

Match each patient's genitourinary trauma presentation to the most appropriate definitive management strategy or next required intervention.

Post-operative complications following major cardiothoracic and vascular surgery require precise recognition and immediate intervention. Match each post-operative clinical scenario to the single most appropriate next step in patient management.

A $32$-year-old man comes to the clinic for follow-up. He has a history of medullary thyroid carcinoma, for which he underwent a total thyroidectomy with central lymph node dissection three years ago. Recent surveillance imaging revealed a newly developed $4.5$-cm right adrenal mass. The patient reports experiencing episodic headaches, excessive sweating, and palpitations over the past three months. His temperature is $37.1^\circ$ C, blood pressure is $170/105$ mm Hg, and pulse is $112$/min. Physical examination is unremarkable. Laboratory evaluation demonstrates significantly elevated $24$-hour urine fractionated metanephrines and normetanephrines. A laparoscopic right adrenalectomy is planned. Which of the following is the most appropriate next step in the management of this patient?

A 5-year-old boy is brought to the clinic by his parents because of a right-sided limp that began this morning. The parents note that he had a mild upper respiratory infection about a week ago, which has completely resolved. He is currently reluctant to bear full weight on his right leg but will take a few steps with a noticeable limp. His temperature is 37.5°C (99.5°F), blood pressure is 95/60 mm Hg, and pulse is 98/min. On physical examination, the child appears well and comfortably plays with a toy on the exam table. His right hip is held in slight flexion and external rotation. There is mild discomfort during passive internal rotation of the right hip, but no overlying erythema, warmth, or swelling.

Radiographs of the pelvis and both hips show no abnormalities. Which of the following is the most appropriate next step in management?

A 28-year-old man is brought to the emergency department after a high-speed motorcycle collision. He was reportedly thrown 30 feet from his vehicle. Upon arrival, he is immobilized on a backboard with a cervical collar. His pulse is 142/min, blood pressure is 76/40 mmHg, and respiratory rate is 28/min. Pulse oximetry shows 94% on a nonrebreather mask. The patient is diaphoretic and confused. The airway is clear, and the trachea is midline. Breath sounds are equal bilaterally. A portable chest radiograph reveals a widened mediastinum, obliteration of the aortic knob, and a left apical cap. Focused assessment with sonography for trauma (FAST) demonstrates a large amount of anechoic fluid in the hepatorenal and splenorenal recesses. The pelvis is stable to anteroposterior compression, and bilateral femur radiographs show no fractures. Intravenous access is secured, and a massive transfusion protocol is initiated. Which of the following is the most appropriate next step in management?

A 65-year-old man with a 40-pack-year smoking history is found to have an incidentally discovered 1.8-cm solitary pulmonary nodule in the right upper lobe on a screening plain chest radiograph. He has no prior chest radiographs available for comparison. Arrange the following diagnostic and therapeutic steps in the most appropriate standard sequence for the management of this patient, from first to last.

Match each clinical presentation to the most appropriate urologic diagnosis.

A 62-year-old man is evaluated in the surgical intensive care unit on postoperative day 4 following an Ivor Lewis esophagectomy for esophageal adenocarcinoma. Over the past 24 hours, the fluid draining from his right chest tube has changed from serosanguineous to a milky-white, opaque appearance. The total drainage volume over this period is 900 mL. The patient is hemodynamically stable, afebrile, and resting comfortably without respiratory distress. Arrange the following interventions in the standard chronological sequence for the evaluation and management of this patient's suspected postoperative complication.

A 68-year-old man presents to the emergency department with sudden, severe "tearing" chest pain radiating to his back between the shoulder blades. His blood pressure is 210/115 mmHg in the right arm and 170/95 mmHg in the left arm. His heart rate is 112/min. Physical examination reveals an early diastolic decrescendo murmur at the right upper sternal border. An acute aortic dissection is highly suspected. Arrange the following management steps in the correct sequential order.

In the setting of severe traumatic brain injury and elevated intracranial pressure, various brain herniation syndromes can occur depending on the primary vector of the mass effect. Match each specific brain herniation syndrome with its precise anatomical mechanism and characteristic clinical or radiologic sequelae.

During a routine wellness examination, a physician palpates a $2.5\text{-cm}$, firm, non-tender nodule in the right thyroid lobe of an adult female patient. Initial serum laboratory analysis demonstrates a normal thyroid-stimulating hormone (TSH) concentration. Arrange the following clinical actions in the most appropriate chronological sequence for the complete diagnostic evaluation and definitive management of this patient, assuming the lesion is ultimately identified as a standard papillary thyroid carcinoma.