A 64-year-old male is admitted to the emergency department following a car accident. His pulse is 94 bpm, blood pressure 95/60 mm Hg, and HCT 30%. Severe hematuria is evident. Following resuscitation, his blood pressure is elevated to 120/80 mm Hg. A CT scan reveals extensive contusion confined to the left kidney and perirenal fat. His blood pressure declines to 80/40 mm Hg, and urgent laparotomy is performed via?

**Core Concept**
The patient is suffering from severe hematuria and hypotension following a car accident, indicating potential damage to the kidney and surrounding structures. The decision to perform an urgent laparotomy requires knowledge of the surgical approach to access the left kidney and perirenal fat.

**Why the Correct Answer is Right**
In this scenario, the patient's blood pressure declines to 80/40 mm Hg, indicating shock and the need for immediate surgical intervention. The left kidney and perirenal fat are confined to the retroperitoneal space, making a transperitoneal approach necessary to access the affected area. The correct approach involves a left retroperitoneal incision, which allows for better visualization and dissection of the retroperitoneal structures.

**Why Each Wrong Option is Incorrect**
**Option A:** A midline incision would be a transperitoneal approach, but it would not provide optimal access to the retroperitoneal space and may not be feasible in an emergency situation.
**Option B:** A right retroperitoneal incision would not provide access to the left kidney and perirenal fat.
**Option C:** A left paramedian incision would be a transperitoneal approach, but it may not provide the best exposure for retroperitoneal structures.

**Clinical Pearl / High-Yield Fact**
In emergency situations, the surgical approach should be tailored to the patient's specific needs, taking into account the location and extent of the injury. In this case, the retroperitoneal approach provides the best access to the left kidney and perirenal fat.

**Correct Answer: C.** Left paramedian incision

✓ Correct Answer: B. Through a midline abdominal incision