Trauma Practice Questions

Q: A transverse fracture of the maxilla is classified as which type of fracture?

Le Fort I. **Explanation:** Le Fort fractures are the standard classification for midface injuries, categorized based on the lines of weakness in the facial skeleton. **1. Why Le Fort I is correct:** Le Fort I, also known as a **Guerin fracture** or **transverse maxillary fracture**, occurs horizontally across the maxilla, superior to the alveolar process. The fracture line passes through the nasal septum, the maxillary sinuses, and the pterygoid plates. This results in a "floating palate," where the upper teeth and palate are mobile relative to the rest of the face. **2. Analysis of Incorrect Options:** * **Le Fort II (Pyramidal Fracture):** This fracture is triangular or pyramidal in shape. The fracture line extends through the nasal bones, maxillary sinuses, and the infraorbital rim. It involves the bridge of the nose. * **Le Fort III (Craniofacial Disjunction):** This is the most severe type, where the entire midface is separated from the cranial base. The fracture line passes through the zygomatic arches, orbits, and ethmoid bone, leading to a "dish-face" deformity. * **Craniofacial Disruption:** This is a general descriptive term often used interchangeably with Le Fort III, but it is not the specific anatomical classification for a simple transverse maxillary fracture. **High-Yield Clinical Pearls for NEET-PG:** * **Pterygoid Plate Involvement:** All three Le Fort fractures must involve the pterygoid plates to be classified as such. * **Clinical Sign:** To differentiate these bedside, grasp the hard palate and move it. If only the teeth move, it is Le Fort I; if the nose moves, it is Le Fort II; if the entire face (including zygomas) moves, it is Le Fort III. * **CSF Rhinorrhea:** Most commonly associated with Le Fort II and III due to involvement of the ethmoid bone/cribriform plate.

Q: All of the following are causes of death in burn patients except?

Hyperkalemia. **Explanation:** In burn management, understanding the timeline of complications is crucial for NEET-PG. While electrolyte imbalances occur, **Hyperkalemia** is generally a transient finding rather than a primary cause of death. **Why Hyperkalemia is the correct answer:** Immediately following a major burn, cell lysis leads to a release of intracellular potassium, causing a transient rise. However, once fluid resuscitation begins, the combination of massive fluid shifts, renal clearance (if kidneys are functional), and the subsequent "diuretic phase" often leads to **Hypokalemia**. While severe hyperkalemia can cause arrhythmias, it is rarely the terminal event in burns compared to systemic failure or infection. **Analysis of Incorrect Options:** * **Shock (Hypovolemic):** This is the **most common cause of death in the first 48 hours** (Resuscitative phase). Increased capillary permeability leads to "Burn Shock." * **Sepsis:** This is the **most common cause of death overall** and the leading cause after the first 48–72 hours (Septic phase). *Pseudomonas aeruginosa* and *Staphylococcus aureus* are frequent culprits. * **ARDS:** Inhalation injury and systemic inflammatory response syndrome (SIRS) often lead to Acute Respiratory Distress Syndrome, a major contributor to mortality in the ICU setting. **High-Yield Clinical Pearls for NEET-PG:** * **Most common cause of death ( 48 hrs):** Sepsis/Multiorgan Failure. * **Fluid of Choice:** Ringer’s Lactate (Parkland Formula: 4ml × kg × %TBSA). * **Inhalation Injury:** Suspect if there are singed nasal hairs or carbonaceous sputum; it significantly increases the risk of ARDS and mortality. * **Curling’s Ulcer:** Acute stress ulcer in the stomach/duodenum associated with severe burns.

Q: In severe injury, which of the following is the first priority to be maintained?

Airway. **Explanation:** In the management of a trauma patient, the primary objective is to address life-threatening conditions in a specific, prioritized sequence. This is governed by the **ATLS (Advanced Trauma Life Support) protocol**, which follows the **ABCDE mnemonic**. **1. Why Airway is the Correct Answer:** The **Airway (with cervical spine protection)** is the first and most critical priority ('A' in ABCDE). Without a patent airway, oxygenation cannot occur, leading to rapid irreversible brain damage and death within minutes. Maintaining airway patency ensures that subsequent steps, like ventilation and circulation management, are effective. **2. Analysis of Incorrect Options:** * **Hypotension (Circulation):** While managing shock and maintaining blood pressure is vital, it falls under 'C' (Circulation). Circulation cannot be effectively managed if the patient is hypoxic due to an obstructed airway. * **Dehydration:** This is a subset of fluid management within 'Circulation.' In acute trauma, we focus on hemorrhagic shock rather than simple dehydration. * **Cardiac Status:** While cardiac monitoring is essential, it is secondary to ensuring the patient can breathe. Even a functioning heart cannot sustain life without oxygenated blood. **Clinical Pearls for NEET-PG:** * **The "Golden Hour":** The first hour after injury where prompt intervention significantly reduces mortality. * **Vocalizing:** If a trauma patient can speak clearly, the airway is currently patent. * **Cervical Spine:** Always assume a C-spine injury in any blunt trauma above the clavicle; maintain neutral immobilization while managing the airway. * **Definitive Airway:** A cuffed tube in the trachea (Endotracheal Intubation) is the gold standard for airway protection.

Q: Which of the following findings indicates hypoperfusion?

All of the above. **Explanation:** Hypoperfusion is defined as a state where the delivery of oxygenated blood is insufficient to meet the metabolic demands of tissues. It is the hallmark of shock. 1. **Systolic BP < 90 mm Hg:** While the body initially uses compensatory mechanisms (like tachycardia and vasoconstriction) to maintain blood pressure, a drop in systolic BP below 90 mm Hg (or a 40 mm Hg drop from baseline) is a classic clinical sign of **decompensated shock** and systemic hypoperfusion. 2. **Lactic Acidosis:** When tissues do not receive enough oxygen (hypoperfusion), cells shift from aerobic to **anaerobic metabolism**. This results in the production of lactate. A serum lactate level >2 mmol/L is a sensitive biochemical marker of occult tissue hypoxia. 3. **Oliguria:** The kidneys are highly sensitive to changes in perfusion. Hypoperfusion leads to decreased renal blood flow and a lower Glomerular Filtration Rate (GFR). Oliguria (urine output <0.5 mL/kg/hr in adults) is a key clinical indicator of end-organ dysfunction due to poor perfusion. **Why "All of the above" is correct:** Hypoperfusion is a multisystemic phenomenon. It manifests clinically through vital signs (hypotension), end-organ function (oliguria/altered mental status), and biochemical markers (lactic acidosis). Therefore, all three findings are valid indicators. **High-Yield Clinical Pearls for NEET-PG:** * **Earliest sign of shock:** Tachycardia (except in neurogenic shock where bradycardia occurs). * **Best indicator of resuscitation adequacy:** Normalization of serum lactate levels and base deficit. * **Shock Index:** Heart Rate / Systolic BP (Normal: 0.5–0.7). An index >0.9 suggests significant hypoperfusion even if BP is "normal." * **Narrow Pulse Pressure:** Often precedes a drop in systolic BP in hemorrhagic shock.

Q: A 20-year-old male patient presents following a road traffic accident with a pulse of 100/minute, BP of 100/70 mmHg, and a respiratory rate of 21/minute. Paradoxical chest movement is observed during respiration. What is the most likely diagnosis?

Flail chest. **Explanation:** The hallmark of this clinical presentation is **paradoxical chest movement**, which is the pathognomonic sign of **Flail Chest**. **1. Why Flail Chest is Correct:** Flail chest occurs when a segment of the thoracic cage loses bony continuity with the rest of the chest wall. This is defined anatomically as **fractures of 3 or more adjacent ribs in 2 or more places**. During inspiration, the negative intrathoracic pressure causes the detached (flail) segment to move inward, while during expiration, it moves outward—the opposite of normal chest wall mechanics. This "paradoxical" motion leads to ineffective ventilation and is often associated with underlying pulmonary contusion. **2. Why Other Options are Incorrect:** * **Tension Pneumothorax:** Presents with respiratory distress, tracheal deviation to the opposite side, absent breath sounds, and hemodynamic instability (obstructive shock). It does not cause paradoxical movement. * **Sucking Chest Wound (Open Pneumothorax):** Occurs due to a large defect in the chest wall. While it causes respiratory distress, the classic sign is air "hissing" through the wound, not paradoxical motion of a rib segment. * **Hemothorax:** Characterized by dullness on percussion and decreased breath sounds due to blood in the pleural cavity. It is a restrictive pathology without the specific segmental instability seen here. **Clinical Pearls for NEET-PG:** * **Management:** The primary goal is adequate oxygenation, humidified air, and **aggressive pain control** (often via epidural analgesia) to prevent splinting and atelectasis. * **Internal Stabilization:** Most cases are managed conservatively; however, mechanical ventilation provides "internal pneumatic stabilization" if respiratory failure develops. * **Associated Injury:** The most serious consequence of flail chest is not the rib fractures themselves, but the underlying **pulmonary contusion**.

Q: Subdural hematoma most commonly results from?

Injury to cortical bridging veins. **Explanation:** **Subdural Hematoma (SDH)** occurs due to the accumulation of blood in the potential space between the dura mater and the arachnoid mater. 1. **Why Option C is Correct:** The primary mechanism of SDH is the **tearing of cortical bridging veins** as they traverse the subdural space to drain into the dural venous sinuses (e.g., Superior Sagittal Sinus). These veins are particularly vulnerable to **shearing forces** during sudden acceleration-deceleration injuries. In elderly patients or those with chronic alcoholism, cerebral atrophy stretches these veins, making them susceptible to rupture even with minor trauma. 2. **Why Other Options are Incorrect:** * **Option A & B:** Rupture of an intracranial aneurysm or arteriovenous malformation (AVM) typically results in a **Subarachnoid Hemorrhage (SAH)**, characterized by blood in the CSF-filled space between the arachnoid and pia mater ("thunderclap headache"). * **Option D:** While hemophilia is a bleeding diathesis that can predispose a patient to intracranial bleeds, it is a systemic risk factor rather than the direct anatomical cause of the hematoma. **High-Yield Clinical Pearls for NEET-PG:** * **Radiology:** On CT, SDH appears as a **Crescent-shaped (concave)** hyperdensity that **can cross suture lines** (unlike Epidural Hematoma). * **Chronic SDH:** Common in elderly; presents with fluctuating levels of consciousness and progressive dementia-like symptoms weeks after minor trauma. * **Epidural Hematoma (EDH):** Usually due to injury to the **Middle Meningeal Artery**; characterized by a "Lucid Interval" and a biconvex (lens-shaped) appearance on CT. * **Management:** Surgical evacuation (Burr hole or Craniotomy) is indicated if there is a significant midline shift (>5mm) or neurological deterioration.

Question 1

A transverse fracture of the maxilla is classified as which type of fracture?

Accepted Answer

Le Fort I

Answer

Le Fort II

Answer

Le Fort III

Answer

Craniofacial disruption

Question 2

All of the following are causes of death in burn patients except?

Accepted Answer

Hyperkalemia

Answer

ARDS

Answer

Shock

Answer

Sepsis

Question 3

In severe injury, which of the following is the first priority to be maintained?

Accepted Answer

Airway

Answer

Hypotension

Answer

Dehydration

Answer

Cardiac status

Question 4

Regarding high-voltage electrical burns to an extremity, what is indicated?

Accepted Answer

Evaluation for fracture of the other extremities and visceral injury is indicated

Answer

Injuries are generally more superficial than those of thermal burns

Answer

Intravenous fluid replacement is based on the percentage of body surface area burned

Answer

Antibiotic prophylaxis is not required

Question 5

Which of the following findings indicates hypoperfusion?

Accepted Answer

All of the above

Answer

Systolic BP < 90 mm Hg

Answer

Lactic acidosis

Answer

Oliguria

Question 6

The roof of the orbit is fractured due to which of the following mechanisms?

Accepted Answer

Fall on the back of the head

Answer

Blow on the forehead

Answer

Blow on the lower jaw

Answer

Blow in the parietal region

Question 7

A 20-year-old male patient presents following a road traffic accident with a pulse of 100/minute, BP of 100/70 mmHg, and a respiratory rate of 21/minute. Paradoxical chest movement is observed during respiration. What is the most likely diagnosis?

Accepted Answer

Flail chest

Answer

Tension pneumothorax

Answer

Sucking chest wound

Answer

Hemothorax

Question 8

In a fracture of the penis involving rupture of the tunica albuginea with intact Busch's fascia, which of the following would be noted clinically?

Accepted Answer

Hematoma involving only the shaft of the penis

Answer

Hematoma involving the scrotum and perineal region

Answer

Hematoma in the penis, scrotum, and abdominal wall

Answer

Hematoma in the penis, scrotum, and thigh

Question 9

Subdural hematoma most commonly results from?

Accepted Answer

Injury to cortical bridging veins

Answer

Rupture of intracranial aneurysm

Answer

Rupture of cerebral arteriovenous malformation

Answer

Hemophilia

Question 10

When is emergency endotracheal intubation indicated?

Accepted Answer

Glasgow Coma Scale (GCS) less than 7

Answer

Tension pneumothorax

Answer

Cardiac tamponade

Answer

Bleeding gastric ulcer

Trauma — MCQs

Trauma — MCQs

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