Liver Trauma — MCQs
Pringle's maneuver is mainly used to control bleeding from which site?
In splenic injury, conservative management is done in which of the following?
A patient with a left hypochondrium contusion presents with systolic blood pressure of 70 mm Hg and pulse rate of 110 bpm. What is the best step in management?
Haemodynamically unstable patient with blunt trauma to abdomen and suspected liver injury; which of the following is the first investigation performed in the emergency room?
Which Couinaud segment of the liver has dual blood supply from both right and left hepatic systems?
A 30-year-old gentleman presents to the emergency department following a road traffic accident. His initial blood pressure is 100/60 mmHg, and his pulse is 120/min. A CT scan reveals a splenic laceration at the inferior border. After 2 units of blood transfusion, his blood pressure improves to 120/70 mmHg, and his pulse decreases to 84/min. What is the next line of management?
A patient comes with abdominal pain, jaundice, and portal hypertension. Anastomosis between which of the following veins is seen?
Which of the following is not assessed in FAST?
What is the standard intercostal space used for hepatic biopsy?
A patient presented with bleeding from thigh and broken 5th rib on right side. What should be done first:
Liver Trauma Indian Medical PG Practice Questions and MCQs
Question 1: Pringle's maneuver is mainly used to control bleeding from which site?
- A. IVC
- B. Cystic artery
- C. Hepatic vein
- D. Liver parenchyma (Correct Answer)
Explanation: ***Liver parenchyma*** - Pringle's maneuver involves **clamping the hepatoduodenal ligament**, which contains the portal triad (hepatic artery, portal vein, and bile duct), to temporarily **reduce blood flow to the liver**. - This maneuver is primarily performed during **liver surgery** to control bleeding from the liver parenchyma itself, allowing for safer resection or repair of liver injuries. *IVC* - Bleeding from the **inferior vena cava (IVC)** is not directly controlled by Pringle's maneuver. The IVC is located posterior to the liver parenchyma and is not part of the hepatoduodenal ligament. - Controlling IVC bleeding typically requires **direct repair** or other specific vascular control techniques, often involving clamps placed directly on the IVC. *Cystic artery* - While the **cystic artery** is a branch of the right hepatic artery (which is occluded during Pringle's maneuver), the maneuver is not *mainly* used to control isolated cystic artery bleeding. - **Cystic artery bleeding** is typically encountered during cholecystectomy and is controlled by ligating or clipping the artery directly, rather than relying on a general liver inflow occlusion. *Hepatic vein* - The **hepatic veins** drain directly into the IVC from the liver parenchyma and are not part of the hepatoduodenal ligament, thus their blood flow is not directly occluded by Pringle's maneuver. - Bleeding from the hepatic veins is a more challenging complication in liver surgery, often requiring **direct compression**, suture repair, or venovenous bypass to manage.
Question 2: In splenic injury, conservative management is done in which of the following?
- A. Extreme pallor and hypotension
- B. Young patient (Correct Answer)
- C. Shattered spleen
- D. Hemodynamically unstable
Explanation: ***Young patient*** - **Conservative management** of splenic injury is often favored in **younger patients** due to their greater capacity for healing and the desire to preserve splenic function. - The risk of **overwhelming post-splenectomy infection (OPSI)** is higher in children, making splenic preservation a priority. *Extreme pallor and hypotension* - **Extreme pallor** and **hypotension** are signs of significant blood loss and **hemodynamic instability**, which typically necessitate surgical intervention. - **Conservative management** is usually contraindicated in such cases as the patient is actively bleeding. *Shattered spleen* - A **shattered spleen** indicates a severe, often **grade IV or V** splenic injury, where the spleen is extensively fragmented. - This level of injury is associated with uncontrollable bleeding and almost always requires **splenectomy**. *Hemodynamically unstable* - **Hemodynamic instability**, characterized by persistent hypotension, tachycardia, or inadequate organ perfusion, is a **contraindication** to conservative management. - Patients who are **hemodynamically unstable** need immediate surgical exploration to control bleeding.
Question 3: A patient with a left hypochondrium contusion presents with systolic blood pressure of 70 mm Hg and pulse rate of 110 bpm. What is the best step in management?
- A. Conservative management with observation
- B. Chest tube insertion
- C. Antibiotic therapy
- D. Emergency surgical exploration (Correct Answer)
Explanation: ***Emergency surgical exploration*** - The patient's **hypotension** (BP 70 mmHg) and **tachycardia** (HR 110 bpm) indicate **hemodynamic instability**, suggesting active bleeding, likely from a splenic or liver injury in the context of a left hypochondrium contusion. - While initial resuscitation with IV fluids is started simultaneously, this degree of shock (class III-IV hemorrhage) with a high-risk mechanism typically requires **emergency surgical exploration** to identify and control the source of bleeding. - According to **ATLS protocols**, patients who are non-responders or transient responders to initial resuscitation with ongoing hemodynamic instability are candidates for immediate operative intervention. *Conservative management with observation* - This approach is appropriate only for **hemodynamically stable** patients with solid organ injuries, often with minor extravasation or hematomas that are not actively bleeding. - The patient's severe hypotension and tachycardia preclude conservative management, as it would risk further decompensation and mortality due to ongoing blood loss. *Chest tube insertion* - This procedure is indicated for managing conditions like **pneumothorax** or **hemothorax**, which might present with respiratory distress, decreased breath sounds, and potentially hemodynamic compromise if severe. - While a chest injury could coexist, the primary concern here is profound shock following an abdominal contusion, suggesting intra-abdominal hemorrhage rather than a thoracic injury as the initial priority. *Antibiotic therapy* - **Antibiotic therapy** is important for preventing or treating infections, particularly in cases of bowel perforation or open wounds, but it does not address acute hemodynamic instability from hemorrhage. - Administering antibiotics before surgically addressing the source of bleeding in a hypotensive patient would be a misprioritization and would not stabilize their condition.
Question 4: Haemodynamically unstable patient with blunt trauma to abdomen and suspected liver injury; which of the following is the first investigation performed in the emergency room?
- A. CT Scan
- B. Diagnostic peritoneal lavage
- C. FAST (Correct Answer)
- D. Standing X ray Abdomen
Explanation: ***FAST*** - For a **hemodynamically unstable** patient with blunt abdominal trauma, **Focused Assessment with Sonography for Trauma (FAST)** is the quickest and most appropriate initial investigation to detect **free fluid** (indicating hemorrhage) in the abdomen or pericardium. - Its **rapidity and non-invasiveness** make it ideal for immediate decision-making regarding surgical intervention. *CT Scan* - **CT scans** provide detailed anatomical information but require the patient to be **hemodynamically stable** and are time-consuming for an emergency assessment. - Moving an unstable patient to radiology for a CT scan can significantly **delay definitive treatment**. *Diagnostic peritoneal lavage* - While historically used, **diagnostic peritoneal lavage (DPL)** is an **invasive procedure** that is less commonly performed now due to the availability of FAST. - It has a high rate of **false positives** and potential complications, making it less favorable as a first-line investigation. *Standing X ray Abdomen* - A **standing X-ray of the abdomen** is primarily useful for detecting **free air under the diaphragm** (indicating bowel perforation) or major bony injuries. - It is **poor at detecting free fluid** or organ injury, which is the primary concern in suspected liver trauma in an unstable patient.
Question 5: Which Couinaud segment of the liver has dual blood supply from both right and left hepatic systems?
- A. I (Correct Answer)
- B. II
- C. III
- D. IV
Explanation: **I** - **Segment I** (the **caudate lobe**) is unique in its blood supply, receiving arterial and portal venous branches from both the **right** and **left hepatic systems** [1]. - This dual supply provides a degree of protection against ischemia compared to other segments. *II* - **Segment II** is part of the **left lobe** and primarily receives its blood supply from the **left hepatic artery** and **left portal vein** [1]. - It does not exhibit the dual right and left sided supply characteristic of the caudate lobe [1]. *III* - **Segment III** is also part of the **left lobe** and, like Segment II, is largely supplied by the **left hepatic artery** and **left portal vein** [1]. - It lacks the characteristic dual system supply seen in Segment I. *IV* - **Segment IV** (the **quadrate lobe**) is also supplied predominantly by branches originating from the **left hepatic artery** and **left portal vein** [1]. - While sometimes considered part of the functional left lobe, it does not share the dual right and left sided vascularization of Segment I [1].
Question 6: A 30-year-old gentleman presents to the emergency department following a road traffic accident. His initial blood pressure is 100/60 mmHg, and his pulse is 120/min. A CT scan reveals a splenic laceration at the inferior border. After 2 units of blood transfusion, his blood pressure improves to 120/70 mmHg, and his pulse decreases to 84/min. What is the next line of management?
- A. Splenectomy
- B. Laparotomy
- C. Splenorrhaphy
- D. Continue the conservative treatment and take subsequent measures on monitoring the patient (Correct Answer)
Explanation: ***Continue the conservative treatment and take subsequent measures on monitoring the patient*** * The patient's initial **hemodynamic instability** after trauma improved significantly after **initial resuscitation with blood transfusion**. This suggests the splenic injury is being contained and is not actively bleeding at a life-threatening rate. * In cases of **stable splenic lacerations**, especially those involving the inferior border and showing improvement with conservative measures, continued **non-operative management** with close monitoring is the preferred approach to preserve splenic function. *Splenectomy* * **Splenectomy** is reserved for cases of **uncontrolled hemorrhage**, severe hemodynamic instability despite resuscitation, or high-grade splenic injuries that are unlikely to heal conservatively. * Removing the spleen leads to **immunocompromise** (risk of **overwhelming post-splenectomy infection**), which should be avoided if possible, especially in young patients. *Laparotomy* * While initial management can involve laparotomy for exploration, in this case, the patient's **stabilization** with blood transfusion and the imaging revealing a specific, likely contained laceration argue against immediate operative intervention without further monitoring. * **Exploratory laparotomy** is primarily indicated when there's persistent hemodynamic instability, signs of peritonitis, or other severe abdominal injuries that require immediate surgical intervention. *Splenorrhaphy* * **Splenorrhaphy** (surgical repair of the spleen) is a **spleen-preserving technique** that might be considered during a laparotomy for a splenic injury. * However, given the patient's current stability with conservative management, immediately proceeding to surgery for splenorrhaphy is not the next appropriate step without attempting continued non-operative management first.
Question 7: A patient comes with abdominal pain, jaundice, and portal hypertension. Anastomosis between which of the following veins is seen?
- A. Left colic vein and middle colic veins
- B. Superior rectal and phrenic veins
- C. Sigmoid and superior rectal veins
- D. Esophageal veins and left gastric veins (Correct Answer)
Explanation: ***Esophageal veins and left gastric veins*** - This anastomosis is crucial in **portal hypertension**, as increased pressure in the **portal venous system** (e.g., due to liver cirrhosis) causes blood to back up into the **systemic venous circulation** through these collateral vessels. - This shunting creates **esophageal varices**, which can rupture and lead to life-threatening **upper gastrointestinal bleeding**, commonly presenting with **jaundice** and **abdominal pain** in liver disease. *Left colic vein and middle colic veins* - Both the left colic and middle colic veins are tributaries of the **inferior mesenteric vein** and **superior mesenteric vein**, respectively, and are part of the **portal system**. - While they form an anastomosis (via the **marginal artery of Drummond**), this connection is within the portal system and does not typically serve as a portosystemic shunt to decompress portal hypertension in the way esophageal varices do. *Superior rectal and phrenic veins* - The **superior rectal vein** drains into the **inferior mesenteric vein** (part of the portal system), and the **phrenic veins** drain into the **inferior vena cava** (part of the systemic system). - There is no direct significant portosystemic anastomosis between these two veins that would be clinically relevant in portal hypertension. *Sigmoid and superior rectal veins* - Both the **sigmoid veins** and the **superior rectal vein** are part of the **inferior mesenteric venous system**, which drains into the **portal circulation**. - While there are anastomoses between these veins within the mesenteric circulation, they are not a direct portosystemic shunt used to relieve pressure in portal hypertension causing the described symptoms.
Question 8: Which of the following is not assessed in FAST?
- A. Sub-xiphoid area
- B. Retroperitoneum (Correct Answer)
- C. Left upper quadrant
- D. Right upper quadrant
Explanation: ***Retroperitoneum*** - The **Focused Assessment with Sonography for Trauma (FAST)** is designed to rapidly detect free intraperitoneal fluid, not retroperitoneal pathology. - The **standard FAST exam** evaluates four key areas: the perihepatic space (right upper quadrant), perisplenic space (left upper quadrant), pelvic/suprapubic area, and pericardial space (subxiphoid view). - The **retroperitoneum** contains structures like the kidneys, pancreas, aorta, and IVC, but these are not routinely assessed in the standard FAST protocol, which focuses on detecting free fluid in dependent peritoneal and pericardial spaces. - Evaluation of retroperitoneal structures would require more detailed ultrasound examination beyond the scope of FAST. *Sub-xiphoid area* - This view assesses the **pericardial sac** for free fluid, which may indicate **cardiac tamponade**, a life-threatening condition in trauma patients. - It is a **standard component of FAST** and critical for detecting pericardial effusions. *Left upper quadrant* - This view examines the **perisplenic space** (between the spleen and diaphragm) and the **left paracolic gutter** for free fluid, suggesting splenic injury or intra-abdominal bleeding. - It is one of the **four standard FAST views** essential for trauma assessment. *Right upper quadrant* - This view assesses **Morrison's pouch** (hepatorenal recess) and the **right paracolic gutter**, which is the most sensitive area for detecting free intraperitoneal fluid. - It is typically the **first view obtained in FAST** and a crucial component of the examination.
Question 9: What is the standard intercostal space used for hepatic biopsy?
- A. 5th
- B. 9th (Correct Answer)
- C. 7th
- D. 11th
Explanation: ***Correct Option: 9th*** - The **9th intercostal space** in the mid-axillary line is the standard and most commonly used entry point for percutaneous liver biopsy. - This location provides safe access to the **right lobe of the liver** while avoiding injury to the **pleura** and **lungs** superiorly and minimizing risk to the **kidney** and other abdominal organs inferiorly. - At this level, the liver is sufficiently large and the approach avoids the pleural reflection, which typically descends to the 8th-9th intercostal space. - Standard surgical textbooks (Sabiston, Schwartz) recommend the **8th-10th intercostal space**, with the 9th being most frequently used. *Incorrect Option: 5th* - The **5th intercostal space** is far too high for liver biopsy and would result in puncturing the **lung** or **pleura**, causing **pneumothorax** or hemothorax. - This space is well above the liver margin and is not suitable for hepatic access. *Incorrect Option: 7th* - While the **7th intercostal space** may occasionally be mentioned, it is generally considered **too high** for routine percutaneous liver biopsy. - This level carries increased risk of **pleural injury** as the pleural reflection may extend to this level, especially during deep inspiration. - It is not the standard or preferred approach in current surgical practice. *Incorrect Option: 11th* - The **11th intercostal space** is too low and significantly increases the risk of injuring the **right kidney** or entering the peritoneal cavity with potential injury to bowel or other abdominal structures. - This space is below the optimal liver access zone and is not recommended for routine liver biopsy.
Question 10: A patient presented with bleeding from thigh and broken 5th rib on right side. What should be done first:
- A. Strapping of chest
- B. Control bleeding (Correct Answer)
- C. Internal fixation of rib
- D. Wait & watch
Explanation: ***Control bleeding*** - In trauma cases, **hemorrhage control** is the immediate priority to prevent exsanguination and hypovolemic shock, which can be rapidly fatal. - The **ABCDE approach** in trauma management (Airway, Breathing, Circulation, Disability, Exposure) dictates that controlling life-threatening bleeding falls under "Circulation" and often takes precedence over other injuries once the airway is secured. *Strapping of chest* - While a fractured rib can cause pain and impair breathing, **chest strapping** is generally not recommended as it restricts chest wall movement, potentially leading to **atelectasis** and **pneumonia**. - Furthermore, it does not address the immediate life threat of uncontrolled bleeding from the thigh. *Internal fixation of rib* - **Internal fixation** of a broken rib is an advanced and elective surgical procedure, typically performed significantly later for specific indications such as flail chest or non-union. - It is not an emergent intervention and would be performed only after the patient is stable and all life-threatening conditions, including active bleeding, have been addressed. *Wait & watch* - A "wait and watch" approach is inappropriate for a patient with active bleeding and a fractured rib, as it delays critical interventions and can lead to **deterioration** of the patient's condition. - Immediate assessment and intervention are required to manage both the bleeding and the potential respiratory compromise from the rib fracture.
Want unlimited practice?
Get full access to all questions, explanations, and performance tracking.
Start For Free