Trauma Practice Questions

Q: What is the most common complication following blunt injury to the thorax?

Rib fracture. **Explanation:** **1. Why Rib Fracture is the Correct Answer:** Rib fractures are the **most common injury** identified following blunt thoracic trauma, occurring in approximately 50% of patients admitted for chest injuries. They serve as a primary indicator of the severity of the impact. In clinical practice, the 4th through 9th ribs are most frequently involved because they are relatively thin and less protected by overlying musculature compared to the upper ribs. **2. Analysis of Incorrect Options:** * **A. Pneumothorax:** While common, it is usually a *consequence* of a rib fracture (where a jagged bone end punctures the lung) or sudden barotrauma. It occurs less frequently than the fractures themselves. * **C. Haemopneumothorax:** This represents a combination of air and blood in the pleural space. While a significant finding in trauma, it is statistically less common than isolated rib fractures. * **D. Aortic Rupture:** This is the most common cause of **immediate death** at the scene of high-velocity blunt trauma (e.g., deceleration injuries), but it is a relatively rare occurrence compared to the high incidence of rib fractures. **3. NEET-PG High-Yield Pearls:** * **Most common rib fractured:** 4th to 9th ribs. * **First and Second Rib Fractures:** Indicate high-energy trauma; always screen for associated injuries to the brachial plexus or subclavian vessels. * **Lower Rib Fractures (10th–12th):** High index of suspicion for **liver** (right side) or **spleen** (left side) injuries. * **Flail Chest:** Defined as $\geq$ 3 ribs fractured in $\geq$ 2 places; characterized by **paradoxical respiration**. * **Management:** The mainstay of treatment for simple rib fractures is **adequate analgesia** (to prevent splinting and subsequent pneumonia) and aggressive pulmonary toilet.

Q: A 70-year-old man presents after a motor vehicle accident with a fractured left rib and right femur. Abdominal CT reveals a left retroperitoneal hematoma adjacent to the left kidney, with no urine extravasation. How should this hematoma be managed?

Observation. **Explanation:** The management of retroperitoneal hematomas (RPH) is determined by the mechanism of injury (blunt vs. penetrating) and the anatomical zone involved. This patient has a **Zone 2 retroperitoneal hematoma** (perinephric/flank) following blunt trauma. **1. Why Observation is Correct:** In blunt trauma, Zone 2 hematomas are managed **conservatively (observation)** if the patient is hemodynamically stable and there is no evidence of expanding hematoma or major renal pedicle injury. The CT scan confirms no urine extravasation (ruling out significant ureteral/pelvic injury) and the hematoma is contained. Most blunt renal injuries are Grade I-III and resolve without intervention. **2. Why Incorrect Options are Wrong:** * **B & D (Surgical Exploration):** In blunt trauma, Zone 2 hematomas are only explored if they are rapidly expanding, pulsatile, or associated with hemodynamic instability. Routine exploration often leads to unnecessary nephrectomies. Flank approaches (Option D) are generally avoided in trauma as they do not allow for full abdominal inspection. * **C (CT-guided aspiration):** This is not indicated in the acute setting. Aspiration carries a risk of introducing infection (converting a hematoma into an abscess) and does not address the underlying injury. **NEET-PG High-Yield Pearls:** * **Zone 1 (Central/Midline):** Contains the aorta and IVC. **Always explore** in both blunt and penetrating trauma. * **Zone 2 (Flank/Perinephric):** Contains kidneys and adrenals. Explore in **penetrating** trauma; **observe** in blunt trauma (unless unstable). * **Zone 3 (Pelvic):** Associated with pelvic fractures. **Never explore** (unless expanding); management involves pelvic binding or angioembolization. * **The "Mattox Maneuver":** Left-sided medial visceral rotation to expose Zone 1 and 2 structures.

Q: A patient developed haemoperitoneum following a Road Traffic Accident (RTA), with a blood pressure of 90/60 mmHg and a pulse of 140/min. Which of the following should be done?

Urgent surgery to be done. ### Explanation The core principle in managing abdominal trauma is determining **hemodynamic stability**. This patient presents with signs of **Class III/IV hemorrhagic shock** (BP 90/60 mmHg, Pulse 140/min) and confirmed hemoperitoneum. **1. Why "Urgent surgery to be done" is correct:** In a patient with blunt or penetrating abdominal trauma who is **hemodynamically unstable**, the standard of care is an **Emergency Exploratory Laparotomy**. The goal is immediate hemorrhage control ("damage control surgery"). Imaging or invasive diagnostics only delay life-saving intervention in an unstable patient with a clear source of bleeding. **2. Analysis of Incorrect Options:** * **Option A (DPL):** While DPL is used in unstable patients when FAST is unavailable, it has largely been replaced by FAST. More importantly, since hemoperitoneum is already diagnosed and the patient is crashing, surgery takes precedence over further diagnostic procedures. * **Option B (Liver):** In blunt trauma (common in RTA), the **Spleen** is the most commonly injured organ. The liver is the second most common. (Note: In penetrating trauma, the small intestine is most common). * **Option C (USG vs. CT):** While FAST (USG) is faster, **CT Scan is the gold standard** for stable patients as it identifies the specific grade of injury and retroperitoneal bleeds. However, CT is contraindicated in unstable patients. **Clinical Pearls for NEET-PG:** * **Unstable + Positive FAST/Hemoperitoneum** = Laparotomy. * **Stable + Positive FAST** = Proceed to CT Scan to grade the injury. * **Kehr’s Sign:** Referred pain to the left shoulder (indicates splenic rupture/diaphragmatic irritation). * **Pringle Maneuver:** Used intraoperatively to control bleeding by compressing the hepatoduodenal ligament.

Q: A patient presents to the ER with massive hemorrhage. What is contraindicated?

Administering 2L of IV crystalloid rapidly. ### Explanation The management of massive hemorrhage has shifted from aggressive volume replacement to **Damage Control Resuscitation (DCR)**. **Why Option B is Correct:** Administering 2L of IV crystalloids rapidly is now **contraindicated** in massive hemorrhage. Large volumes of crystalloids lead to the **"Lethal Triad"** (Acidosis, Hypothermia, and Coagulopathy). Specifically, they cause **dilutional coagulopathy** by thinning out clotting factors and can dislodge newly formed "soft clots" by abruptly increasing blood pressure (the concept of "popping the clot"). Current ATLS 10th Edition guidelines recommend an initial bolus of only **1 Liter** of crystalloid, followed by early transition to blood products. **Analysis of Incorrect Options:** * **A. Massive Transfusion Fluid Challenge:** In exsanguinating patients, a massive transfusion protocol (MTP) using a 1:1:1 ratio of Plasma:Platelets:PRBCs is the gold standard to maintain perfusion without causing dilution. * **C. Early Tranexamic Acid (TXA):** Based on the CRASH-2 trial, TXA should be administered within **3 hours** of injury to reduce mortality by inhibiting fibrinolysis. * **D. Thromboelastography (TEG):** TEG or ROTEM provides a real-time assessment of the patient's coagulation status (viscoelastic testing), allowing for "goal-directed" rather than empirical transfusion. **High-Yield Clinical Pearls for NEET-PG:** * **Permissive Hypotension:** The goal in non-compressible hemorrhage is to maintain a Mean Arterial Pressure (MAP) of ~65 mmHg (or systolic BP of 80-90 mmHg) until surgical control is achieved. * **Lethal Triad:** Hypothermia + Coagulopathy + Metabolic Acidosis. * **1:1:1 Ratio:** Modern MTP aims to mimic whole blood. * **Hypocalcemia:** A common complication of massive transfusion due to citrate toxicity.

Q: Gillies approach for reduction of zygomatic fractures is done through which anatomical space?

Temporal fossa. **Explanation:** The **Gillies approach** (or Gillies temporal approach) is a classic surgical technique used for the indirect reduction of isolated fractures of the zygomatic arch or zygomaticomalar complex. **Why Temporal Fossa is Correct:** The procedure involves making an incision within the hairline, approximately 2.5 cm superior and anterior to the helix of the ear. The dissection is carried down through the skin and subcutaneous tissue until the **deep temporal fascia** is identified. An incision is made through this fascia to reveal the **temporalis muscle**. A Rowe’s zygomatic elevator or a Bristow’s elevator is then passed deep to the temporal fascia but superficial to the temporalis muscle. This specific plane leads directly into the **temporal fossa**, allowing the instrument to slide inferiorly behind the zygomatic arch to exert upward and outward pressure for reduction. **Why Other Options are Incorrect:** * **Infratemporal Fossa:** This space lies deep and inferior to the zygomatic arch. Entering this space would involve unnecessary risk to the maxillary artery and pterygoid venous plexus, and it is not the surgical plane used in the Gillies technique. * **Infraorbital Fossa:** This is located on the anterior surface of the maxilla. While zygomatic fractures may involve the infraorbital rim, the Gillies approach specifically utilizes the temporal route to leverage the arch from behind. **Clinical Pearls for NEET-PG:** * **Key Landmark:** The elevator must be placed **deep to the deep temporal fascia** to ensure it slides behind the zygomatic arch. * **Alternative Approach:** The **Keen’s approach** is an intraoral method (buccal sulcus incision) used for the same purpose. * **Dingman’s Approach:** A lateral brow incision used for zygomaticofrontal suture reduction. * **High-Yield Fact:** The Gillies approach is preferred because it leaves no visible facial scar and utilizes the strong temporal fascia as a guide.

Q: A 45-year-old woman presents with intracranial extradural hemorrhage. Which of the following is least likely?

Absence of a lucid interval. **Explanation:** **Extradural Hemorrhage (EDH)**, also known as epidural hemorrhage, typically occurs due to arterial bleeding between the skull and the dura mater. **Why Option A is the Correct Answer (Least Likely):** The **"Lucid Interval"**—a period of temporary improvement in consciousness followed by rapid deterioration—is a **classic hallmark** of EDH, occurring in approximately 20–50% of cases. While not present in every patient, stating that its "absence" is a characteristic feature is incorrect. In clinical practice, the presence of a lucid interval strongly suggests EDH over other intracranial bleeds. **Analysis of Incorrect Options:** * **Option B (Not common in old age):** This is a **true** statement. EDH is less common in the elderly because the dura mater becomes more tightly adherent to the inner table of the skull with age, making it difficult for a hematoma to strip the dura away. It is most common in young adults. * **Option C (Middle meningeal artery):** This is **true**. The most common source of bleeding in EDH (85% of cases) is the **Middle Meningeal Artery (MMA)**, specifically its anterior branch. * **Option D (Temporoparietal fracture):** This is **true**. The MMA runs beneath the **pterion**, where the skull is thinnest. A fracture in the temporoparietal region is the most frequent cause of MMA laceration. **High-Yield Clinical Pearls for NEET-PG:** * **CT Appearance:** EDH presents as a **Biconvex (Lentiform)**, hyperdense, extra-axial collection that **does not cross suture lines** (as the dura is fixed at sutures). * **Source of Bleed:** MMA (Arterial) is most common; however, dural venous sinus injury can cause EDH in the posterior fossa. * **Management:** Urgent surgical evacuation (burr hole or craniotomy) is required if the hematoma is symptomatic or >15mm in thickness.

Q: Intrapleural pressure greater than atmospheric pressure is diagnostic of which condition?

Valvular pneumothorax. **Explanation:** The core concept behind this question is the relationship between intrapleural pressure and atmospheric pressure in various types of pneumothorax. **1. Why Valvular Pneumothorax is Correct:** Valvular pneumothorax, also known as **Tension Pneumothorax**, occurs when a "one-way valve" mechanism is created (either by a chest wall wound or a lung parenchymal injury). Air enters the pleural space during inspiration but cannot escape during expiration. This leads to a progressive accumulation of air, causing the intrapleural pressure to rise and eventually **exceed atmospheric pressure**. This positive pressure causes the collapse of the ipsilateral lung and a mediastinal shift to the opposite side, leading to hemodynamic instability. **2. Why Other Options are Incorrect:** * **Closed Pneumothorax:** Air enters the pleural space (usually from a lung leak) but the leak seals off. The intrapleural pressure remains **negative** (less than atmospheric), though it is higher than normal. * **Open Pneumothorax (Sucking Chest Wound):** There is a direct communication between the atmosphere and the pleural space. The intrapleural pressure **equilibrates** with atmospheric pressure but does not exceed it. **Clinical Pearls for NEET-PG:** * **Diagnosis:** Tension pneumothorax is a **clinical diagnosis**. Do not wait for a Chest X-ray if the patient is symptomatic (tracheal shift, respiratory distress, hypotension). * **Management:** Immediate **needle decompression** (5th intercostal space, mid-axillary line in adults) followed by Tube Thoracostomy (ICD). * **Radiological Sign:** Deviation of the mediastinum and flattening/inversion of the diaphragm on the affected side.

Question 1

A 50-year-old chronic alcoholic, while having dinner, suddenly becomes aphonic and presents with respiratory distress. What is the immediate management?

Accepted Answer

Heimlich maneuver

Answer

Cricothyroidotomy

Answer

Emergency tracheostomy

Answer

Humidified oxygen

Question 2

What is the most common complication following blunt injury to the thorax?

Accepted Answer

Rib fracture

Answer

Pneumothorax

Answer

Haemopneumothorax

Answer

Aortic rupture

Question 3

A 70-year-old man presents after a motor vehicle accident with a fractured left rib and right femur. Abdominal CT reveals a left retroperitoneal hematoma adjacent to the left kidney, with no urine extravasation. How should this hematoma be managed?

Accepted Answer

Observation

Answer

Exploratory laparotomy through a midline incision

Answer

CT-guided aspiration

Answer

Surgical exploration through a left-flank retroperitoneal approach

Question 4

A patient developed haemoperitoneum following a Road Traffic Accident (RTA), with a blood pressure of 90/60 mmHg and a pulse of 140/min. Which of the following should be done?

Accepted Answer

Urgent surgery to be done

Answer

Diagnostic Peritoneal Lavage (DPL) to be done

Answer

The liver is the most common organ to rupture

Answer

Ultrasound (USG) is better than CT Scan

Question 5

The clinical features of eye opening, best verbal response, and best motor response that result in a Glasgow Coma Scale score of 7 best fit which of the following descriptions?

Accepted Answer

Eye opening to pain, making incomprehensible sounds, and flexion as the best motor response.

Answer

Spontaneous eye opening, confused verbal response, and localizes to pain.

Answer

Eye opening to pain, confused verbal response, and localizes to pain.

Answer

No eye opening, incomprehensible sounds, and extension as the best motor response.

Question 6

A patient presents to the ER with massive hemorrhage. What is contraindicated?

Accepted Answer

Administering 2L of IV crystalloid rapidly

Answer

Administering a massive transfusion fluid challenge

Answer

Administering early tranexamic acid

Answer

Checking coagulation with thromboelastography, if available

Question 7

Gillies approach for reduction of zygomatic fractures is done through which anatomical space?

Accepted Answer

Temporal fossa

Answer

Infratemporal fossa

Answer

Infraorbital fossa

Answer

All of the above

Question 8

A 45-year-old woman presents with intracranial extradural hemorrhage. Which of the following is least likely?

Accepted Answer

Absence of a lucid interval

Answer

It is not commonly seen in old age

Answer

Middle meningeal artery involvement

Answer

Temporoparietal region fracture

Question 9

Which of the following conditions is associated with a "moon face" appearance?

Accepted Answer

LeFort II and Le Fort III fractures

Answer

Isolated LeFort I fracture

Answer

Mandibular fractures

Answer

Unilateral zygomatic complex fractures

Question 10

Intrapleural pressure greater than atmospheric pressure is diagnostic of which condition?

Accepted Answer

Valvular pneumothorax

Answer

Closed pneumothorax

Answer

Open pneumothorax

Answer

All of the above

Trauma — MCQs

Trauma — MCQs

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