Trauma — MCQs

A rugby player hit his head on the post whilst involved in a tackle. He was unconscious for 5 min but regained full consciousness and sat on the sideline until the end of the game. He was then noted to be drowsy and over the past 30 min became confused and no longer obeyed commands. Most likely diagnosis is:

Q187Medium

A previously healthy 20-year-old man is admitted to a hospital with acute onset of left-sided chest pain. The electrocardiographic findings are normal but chest x-ray shows a 40% left pneumothorax. What is the recommended treatment procedure?

Q188Medium

A 24-year-old Jehovah's Witness who underwent emergent splenectomy following a high-speed motorcycle collision with an estimated blood loss of 1500 mL. Which of the following strategies should be employed for his resuscitation?

Q189Medium

A 48-year-old male patient, a victim of a road traffic accident (RTA), presents to the emergency room. Which of the following is NOT included in the primary survey of this trauma patient?

Q190Easy

What is a suprazygomatic fracture?

Trauma Indian Medical PG Practice Questions and MCQs

Question 181: Curling's ulcer is seen in which of the following conditions?

A. Drowning
B. Burns (Correct Answer)
C. Electric shock
D. Intracranial tumor

Explanation: **Explanation:** **Curling’s ulcer** is an acute stress ulcer of the duodenum that occurs as a complication of severe **burns**. **1. Why Burns is Correct:** The underlying pathophysiology involves severe hypovolemia and hemoconcentration following a major burn injury. This leads to decreased mucosal blood flow (ischemia) to the stomach and duodenum. The resulting ischemia compromises the protective mucosal barrier, allowing gastric acid to cause superficial erosions or deep ulcerations, most commonly in the proximal duodenum. **2. Analysis of Incorrect Options:** * **Drowning & Electric shock:** While these are traumatic events, they are not classically associated with the specific eponymous "Curling’s ulcer." While any physiological stress can cause "stress gastritis," the term Curling’s is reserved specifically for burn-related ulcers. * **Intracranial tumor:** This is associated with **Cushing’s ulcer**. Increased intracranial pressure (ICP) stimulates the vagus nerve, leading to excessive gastric acid secretion (hyperchlorhydria). Unlike Curling’s ulcers (which are ischemic), Cushing’s ulcers are acid-driven and can occur in the stomach, duodenum, or esophagus. **3. High-Yield Clinical Pearls for NEET-PG:** * **Location:** Curling’s ulcers are most commonly found in the **duodenum**, whereas Cushing’s ulcers are more common in the **stomach**. * **Prophylaxis:** The incidence has significantly decreased due to the routine use of H2 blockers, Proton Pump Inhibitors (PPIs), and early enteral feeding in burn units. * **Mnemonic:** Remember **C**urling = **C**ooked (Burns) and **C**ushing = **C**ushion (Brain/Head).

Question 182: During an explorative laparotomy for a penetrating abdominal injury, suspicion of significant blood loss arises due to a prolonged surgery. Which of the following methods best quantifies the actual blood loss?

A. Assessing for pallor
B. Measuring volume in suction bottles and the increase in weight of swabs (Correct Answer)
C. Determining cardiac output using the thermodilution method
D. Using transesophageal Doppler

Explanation: ### Explanation In the intraoperative setting, especially during emergency trauma surgery like an exploratory laparotomy, the most practical and accurate method to quantify blood loss is the **gravimetric and volumetric assessment**. **Why Option B is Correct:** The "Gold Standard" for intraoperative blood loss estimation involves two components: 1. **Volumetric:** Measuring the fluid collected in suction canisters (subtracting any irrigation fluid used). 2. **Gravimetric:** Weighing surgical swabs/sponges. The rule of thumb is that **1 gram of increased weight equals approximately 1 mL of blood loss**. This method provides a real-time, objective measurement that is superior to visual estimation, which often underestimates large losses. **Why Other Options are Incorrect:** * **Option A (Pallor):** This is a clinical sign of anemia or shock, not a quantitative measure. It is subjective and can be masked by peripheral vasoconstriction or skin pigmentation. * **Option C (Thermodilution):** While this measures cardiac output and helps assess hemodynamic status, it does not quantify the volume of blood lost. It is invasive and usually reserved for complex ICU monitoring rather than routine trauma laparotomy. * **Option D (Transesophageal Doppler):** This monitors stroke volume and fluid responsiveness. Like thermodilution, it assesses the *effect* of blood loss on hemodynamics but cannot provide a volume measurement in milliliters. **High-Yield Clinical Pearls for NEET-PG:** * **Visual Estimation:** Surgeons typically underestimate blood loss by 25–50%. * **The 15% Rule:** Clinical signs of shock (tachycardia) usually don't appear until >15% of blood volume (Class II Hemorrhage) is lost. * **Irrigation Calculation:** Always remember: *Total Suction Volume – Irrigation Fluid = Actual Blood Loss.* * **Hematocrit Trap:** Intraoperative hematocrit is an unreliable indicator of acute blood loss because it takes time for compensatory interstitial fluid to shift into the intravascular space.

Question 183: A 34-year-old male presents with sudden onset, increasing respiratory distress following chest trauma. A hyper-resonant note is observed on the left side. What is the most appropriate immediate emergent management?

A. Needle puncture and emergent decompression (Correct Answer)
B. Tube insertion
C. Antibiotics and oxygen
D. No treatment needed

Explanation: ### Explanation The clinical presentation of sudden respiratory distress following chest trauma, combined with a **hyper-resonant percussion note**, is pathognomonic for a **Tension Pneumothorax**. This is a life-threatening emergency where a "one-way valve" effect allows air into the pleural space but prevents its escape, leading to increased intra-thoracic pressure, mediastinal shift, and eventual cardiovascular collapse due to decreased venous return. **Why Option A is Correct:** In Tension Pneumothorax, the diagnosis is **purely clinical**. One must not wait for radiological confirmation (X-ray). The immediate priority is to convert the tension pneumothorax into a simple pneumothorax. **Needle decompression** (emergent decompression) is the gold standard immediate intervention to relieve pressure and stabilize the patient before definitive treatment. **Why Other Options are Incorrect:** * **Option B (Tube Thoracostomy):** While a chest tube is the *definitive* treatment, it takes time to set up. In an emergent "on-the-table" crash scenario, needle decompression must precede it to prevent cardiac arrest. * **Option C (Antibiotics and Oxygen):** While oxygen is supportive, it does not address the mechanical obstruction to ventilation and circulation. Antibiotics have no role in the acute management of a pneumothorax. * **Option D (No treatment):** Tension pneumothorax is universally fatal if left untreated. **NEET-PG High-Yield Pearls:** * **Classic Triad:** Respiratory distress, hyper-resonance, and shifted trachea (late sign) with distended neck veins. * **ATLS 10th Edition Update:** The recommended site for needle decompression in adults is the **5th intercostal space** just anterior to the mid-axillary line (previously the 2nd ICS, mid-clavicular line). * **Needle Size:** Use a large-bore cannula (14G or 16G). * **Definitive Treatment:** Always follow needle decompression with a **Chest Tube (Tube Thoracostomy)**.

Question 184: What is the intravenous fluid formula for burns?

A. Total % body surface area x weight (kg) x 4 = volume (ml) (Correct Answer)
B. Total % body surface area x weight (kg) x 5 = volume (ml)
C. Total % body surface area x weight (kg) x 6 = volume (ml)
D. Total % body surface area x weight (kg) x 7 = volume (ml)

Explanation: The correct answer is **Option A**, which represents the **Parkland Formula**, the gold standard for fluid resuscitation in burn patients during the first 24 hours. ### **Medical Concept** Burn injuries cause a massive systemic inflammatory response, leading to increased capillary permeability and "third-spacing" of fluids. To prevent hypovolemic shock and maintain organ perfusion (especially renal function), aggressive fluid replacement is required. The Parkland Formula calculates the total volume of **Ringer’s Lactate** (the fluid of choice) needed: * **Formula:** 4 mL × Body Weight (kg) × % Total Body Surface Area (TBSA) burned. * **Administration:** Give 50% of the calculated volume in the first 8 hours (from the time of injury) and the remaining 50% over the next 16 hours. ### **Analysis of Incorrect Options** * **Options B, C, and D:** These multipliers (5, 6, and 7 mL) are incorrect. Using these would lead to **fluid overload**, increasing the risk of pulmonary edema, compartment syndrome, and "fluid creep." While some modified formulas (like the Modified Brooke) use 2 mL/kg/%, the standard Parkland remains 4 mL/kg/%. ### **High-Yield Clinical Pearls for NEET-PG** * **Fluid of Choice:** Crystalloids (Ringer’s Lactate) are preferred because they are isotonic and the lactate helps buffer the metabolic acidosis common in burns. * **Rule of Nines:** Use Wallace’s Rule of Nines to calculate TBSA. Note: First-degree burns (erythema only) are **not** included in the calculation. * **Monitoring:** The best indicator of adequate fluid resuscitation is **Urinary Output**. Target: **0.5–1.0 mL/kg/hr** in adults and **1.0 mL/kg/hr** in children. * **Modified Brooke Formula:** Uses 2 mL/kg/% TBSA; often preferred now in some centers to avoid over-resuscitation.

Question 185: A 50-year-old fire fighter emerges from a burning house with third-degree burns over 70% of his body. The patient expires 24 hours later. Which of the following was the most likely cause of death?

A. Congestive heart failure
B. Disseminated intravascular coagulation
C. Hypovolemic shock (Correct Answer)
D. Pulmonary saddle embolism

Explanation: **Explanation:** In the acute phase of a major burn (the first 24–48 hours), the primary cause of mortality is **Hypovolemic Shock**, often referred to as "Burn Shock." **Why Hypovolemic Shock is correct:** Extensive thermal injury causes a massive systemic inflammatory response leading to increased capillary permeability. This results in a rapid shift of fluid, electrolytes, and plasma proteins from the intravascular space into the interstitial space (edema). In a patient with 70% Total Body Surface Area (TBSA) burns, this fluid loss is profound. Without aggressive fluid resuscitation (e.g., via the Parkland Formula), the patient develops severe intravascular volume depletion, leading to decreased cardiac output, organ hypoperfusion, and death within the first 24 hours. **Why the other options are incorrect:** * **Congestive heart failure:** While fluid overload during resuscitation can cause heart failure, it is rarely the primary cause of death in the first 24 hours unless there is significant pre-existing cardiac disease. * **Disseminated intravascular coagulation (DIC):** DIC can occur as a complication of sepsis or severe trauma, but it typically manifests later in the clinical course rather than as the immediate cause of death within 24 hours. * **Pulmonary saddle embolism:** This is a complication of deep vein thrombosis (DVT) due to prolonged immobilization. It typically occurs several days to weeks after the initial injury, not within the first 24 hours. **High-Yield Clinical Pearls for NEET-PG:** * **Timeline of Death in Burns:** * **< 24-48 hours:** Hypovolemic shock (Most common) and Inhalation injury. * **> 48 hours:** Septic shock (Most common cause of delayed mortality; *Pseudomonas* is a frequent pathogen). * **Parkland Formula:** $4 \text{ mL} \times \text{Body Weight (kg)} \times \% \text{TBSA}$. Give half in the first 8 hours and the remainder over the next 16 hours. * **Rule of Nines:** Used to quickly estimate TBSA in adults. * **Fluid of Choice:** Ringer’s Lactate is the preferred crystalloid for initial resuscitation.

Question 186: A rugby player hit his head on the post whilst involved in a tackle. He was unconscious for 5 min but regained full consciousness and sat on the sideline until the end of the game. He was then noted to be drowsy and over the past 30 min became confused and no longer obeyed commands. Most likely diagnosis is:

A. Extradural hematoma (Correct Answer)
B. Subdural hematoma
C. Subarachnoid hematoma
D. Cerebral edema

Explanation: ### Explanation The clinical presentation described is a classic textbook case of an **Extradural Hematoma (EDH)**. **1. Why Extradural Hematoma is Correct:** The hallmark of this case is the **"Lucid Interval."** This refers to the period where the patient regains consciousness (after the initial concussion) and appears normal before secondary neurological deterioration occurs. * **Mechanism:** Usually caused by a blow to the temporal region leading to a fracture and rupture of the **Middle Meningeal Artery**. * **Pathophysiology:** As the arterial bleed expands, it strips the dura away from the skull, eventually causing increased intracranial pressure and brain herniation, leading to the sudden onset of drowsiness and confusion. **2. Why the Other Options are Incorrect:** * **Subdural Hematoma (SDH):** Typically results from the tearing of **bridging veins**. It usually presents with a more gradual decline in consciousness and is more common in elderly patients or those with significant deceleration injuries. It lacks the classic rapid "lucid interval" seen here. * **Subarachnoid Hemorrhage:** Usually presents with a "thunderclap headache" (the worst headache of life) and meningeal irritation (neck stiffness), rather than a post-traumatic lucid interval. * **Cerebral Edema:** This is a secondary process following injury. While it causes increased ICP, it does not typically follow the specific "unconscious-conscious-unconscious" pattern as distinctly as an EDH. **3. NEET-PG High-Yield Pearls:** * **Imaging:** On CT scan, EDH appears as a **Biconvex (Lentiform)**, hyperdense, extra-axial collection that does *not* cross suture lines. * **Source of Bleed:** Middle Meningeal Artery (most common). * **Clinical Sign:** A dilated pupil on the side of the lesion (ipsilateral) due to CN III compression is a late sign of herniation. * **Management:** Urgent neurosurgical evacuation (burr hole or craniotomy) is life-saving.

Question 187: A previously healthy 20-year-old man is admitted to a hospital with acute onset of left-sided chest pain. The electrocardiographic findings are normal but chest x-ray shows a 40% left pneumothorax. What is the recommended treatment procedure?

A. Observation
B. Barium swallow
C. Thoracotomy
D. Tube thoracostomy (Correct Answer)

Explanation: ### Explanation The patient presents with a **large spontaneous pneumothorax (40%)**. In surgical practice, the management of pneumothorax is primarily determined by the size of the collapse and the patient's clinical stability. **Why Tube Thoracostomy is Correct:** According to standard trauma and surgical guidelines (including BTS and ATLS), a pneumothorax is generally considered "large" if the distance from the chest wall to the lung margin is >2 cm or if it involves **>15-20% of the hemithorax**. For a 40% collapse, conservative management is insufficient. **Tube thoracostomy (Intercostal Drainage - ICD)** is the treatment of choice to re-expand the lung, prevent progression to tension pneumothorax, and allow the visceral pleura to heal. **Analysis of Incorrect Options:** * **A. Observation:** This is reserved for small (<15-20%), asymptomatic primary spontaneous pneumothoraces. A 40% collapse carries a high risk of respiratory compromise and requires active intervention. * **B. Barium Swallow:** This is used to diagnose esophageal perforation (Boerhaave syndrome). While esophageal rupture can cause pneumothorax/hydropneumothorax, it is usually associated with severe vomiting and mediastinal air, which are not present here. * **C. Thoracotomy:** This is an invasive surgical procedure. It is indicated only for recurrent pneumothorax, bilateral cases, or persistent air leaks (failure of ICD), but never as the first-line treatment for a simple pneumothorax. **High-Yield Clinical Pearls for NEET-PG:** * **Safe Triangle for ICD:** Bordered by the anterior border of the latissimus dorsi, lateral border of pectoralis major, and a line superior to the 5th intercostal space. * **Insertion Site:** Always insert the tube just **above the rib** (superior border) to avoid damaging the neurovascular bundle located in the subcostal groove. * **Tension Pneumothorax:** This is a clinical diagnosis. Treatment is immediate **needle decompression** (5th ICS, mid-axillary line in adults) followed by a chest tube. Do not wait for an X-ray.

Question 188: A 24-year-old Jehovah's Witness who underwent emergent splenectomy following a high-speed motorcycle collision with an estimated blood loss of 1500 mL. Which of the following strategies should be employed for his resuscitation?

A. Vasopressors should be primarily utilized for maintenance of his blood pressure.
B. Synthetic colloids should be administered as the primary resuscitation fluid in a 3:1 ratio to replace the volume of blood lost.
C. 0.9% normal saline should be administered in a 1:1 ratio to replace the volume of blood lost.
D. Lactated Ringer solution should be administered in a ratio of 3:1 to replace the blood lost. (Correct Answer)

Explanation: ### **Explanation** The management of hemorrhagic shock in a Jehovah’s Witness patient requires a meticulous balance of volume expansion and blood-sparing strategies, as these patients typically refuse allogeneic blood products. **1. Why Option D is Correct:** In the initial resuscitation of hemorrhagic shock (Class III hemorrhage in this case, given 1500 mL loss), **isotonic crystalloids** like **Lactated Ringer (LR)** or Plasmalyte are the fluids of choice. According to the ATLS guidelines, crystalloids should be administered in a **3:1 ratio** (3 mL of crystalloid for every 1 mL of blood lost). This ratio accounts for the fact that only about 25–30% of infused crystalloid remains in the intravascular space, while the rest shifts into the interstitial compartment. **2. Why Other Options are Incorrect:** * **Option A:** Vasopressors are contraindicated as primary therapy in hemorrhagic shock. They increase systemic vascular resistance, which can worsen tissue perfusion and metabolic acidosis in an empty vascular bed. * **Option B:** While synthetic colloids (like HES) stay intravascular longer, they are not preferred over crystalloids due to risks of coagulopathy and acute kidney injury. Furthermore, the 3:1 ratio is specific to crystalloids; colloids are typically given 1:1. * **Option C:** While 0.9% Normal Saline is an isotonic crystalloid, it is given in a 3:1 ratio, not 1:1. Additionally, large volumes of NS can lead to hyperchloremic metabolic acidosis. **3. NEET-PG High-Yield Pearls:** * **Jehovah’s Witness Management:** Focus on "Bloodless Surgery" techniques—preoperative erythropoietin, intraoperative cell salvage (if acceptable to the patient), and meticulous surgical hemostasis. * **Lethal Triad of Trauma:** Acidosis, Coagulopathy, and Hypothermia. * **Fluid Choice:** LR is often preferred over NS in trauma to avoid hyperchloremia and because its pH is more physiological. * **Permissive Hypotension:** In active non-compressible hemorrhage, maintain a MAP of ~65 mmHg until definitive surgical control is achieved to prevent "popping the clot."

Question 189: A 48-year-old male patient, a victim of a road traffic accident (RTA), presents to the emergency room. Which of the following is NOT included in the primary survey of this trauma patient?

A. Measuring Blood Pressure (BP)
B. Exposing the body to rule out injuries
C. CT Abdomen for identification of bleeding (Correct Answer)
D. Checking the airway

Explanation: The **Primary Survey** in trauma management follows the **ABCDE** protocol, designed to identify and treat life-threatening injuries sequentially. The correct answer is **C (CT Abdomen)** because it is part of the **Secondary Survey** or a definitive diagnostic phase, not the initial stabilization. ### Why CT Abdomen is the Correct Answer The primary survey focuses on immediate resuscitation. A CT scan requires moving a potentially unstable patient to a radiology suite, which violates the principle of "treating as you go." In the primary survey, internal bleeding is assessed using bedside tools like **FAST (Focused Assessment with Sonography for Trauma)** or **DPL (Diagnostic Peritoneal Lavage)**, which do not require shifting the patient. ### Explanation of Incorrect Options * **D. Checking the Airway (A):** This is the first step of the primary survey. Ensuring a patent airway with cervical spine protection is the highest priority. * **A. Measuring Blood Pressure (C - Circulation):** Assessing hemodynamic status via BP, pulse, and capillary refill is critical to identify shock during the "Circulation" phase. * **B. Exposing the body (E - Exposure):** The patient must be fully undressed to identify occult injuries (e.g., back wounds or fractures) while maintaining normothermia. ### High-Yield Clinical Pearls for NEET-PG * **ABCDE Sequence:** **A**irway (with C-spine protection), **B**reathing, **C**irculation (hemorrhage control), **D**isability (GCS/Pupils), **E**xposure/Environment. * **Adjuncts to Primary Survey:** Include FAST, Chest X-ray (AP view), Pelvic X-ray, and ABG. * **Golden Rule:** Never send an unstable patient for a CT scan. * **Secondary Survey:** Only begins *after* the primary survey is complete, vitals are stabilized, and the "head-to-toe" examination is initiated.

Question 190: What is a suprazygomatic fracture?

A. Le Fort I fracture
B. Le Fort II fracture
C. Le Fort III fracture (Correct Answer)
D. Mandibular fracture

Explanation: **Explanation:** The **Le Fort III fracture**, also known as **Craniofacial Dysjunction**, is termed a **suprazygomatic fracture** because the fracture line passes above the zygomatic bone, effectively separating the entire facial skeleton from the cranial base. * **Le Fort III (Correct):** The fracture line starts at the nasofrontal suture, extends across the bridge of the nose, through the ethmoid bone, along the medial orbital wall, across the orbital floor, and through the lateral orbital wall. Crucially, it involves the **zygomaticofrontal suture** and the **zygomatic arch**. Since the break occurs above the malar (zygomatic) bone, it is "suprazygomatic." * **Le Fort I (Incorrect):** This is a **Guerin fracture** or horizontal maxillary fracture. It occurs at the level of the nasal floor, separating the alveolar process from the rest of the maxilla. It is "infrazygomatic." * **Le Fort II (Incorrect):** This is a **Pyramidal fracture**. The fracture line passes through the nasal bones, maxillary sinus, and infraorbital rim. While it approaches the zygomatic area, it stays medial to the zygomaticomaxillary suture. * **Mandibular fracture (Incorrect):** These involve the lower jaw and are anatomically unrelated to the zygomatic complex or the Le Fort classification of midface fractures. **High-Yield Clinical Pearls for NEET-PG:** * **Dish-face deformity:** Classic clinical appearance of Le Fort II and III due to the backward and downward displacement of the midface. * **CSF Rhinorrhea:** Most common in Le Fort III due to involvement of the ethmoid bone/cribriform plate. * **Pterygoid Plates:** Involvement of the pterygoid plates is a mandatory feature for all Le Fort fractures. * **Guérin's Sign:** Ecchymosis in the region of the greater palatine artery (seen in Le Fort I).

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Trauma — MCQs

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