Trauma — MCQs

A 19-year-old man sustained a blunt injury to his upper abdomen after falling off his skateboard. Abdominal CT and magnetic resonance cholangiopancreatography (MRCP) confirmed transection of the main pancreatic duct at the middle of the pancreatic body. What is the most appropriate next step in management?

Q214Easy

What is the formula for calculating IV fluid requirements for a burns patient over the first 24 hours?

Q215Easy

The Glasgow Coma Scale (GCS) is determined by taking the best response in each category and totaling them; it ranges from?

Q216Medium

A 60-year-old alcoholic sustained blunt trauma to his head due to assault and is brought to the ER. He opens his eyes to pain, speaks incomprehensible words when his sternum is pressed, and withdraws his hand to pain. What is his Glasgow Coma Score?

Q217Medium

In traumatic brain injury, what is the target cerebral perfusion pressure that should be maintained?

Q218Easy

Stress ulcers seen in burns are termed as?

Q219Easy

What is the correct sequence of resuscitation in a trauma patient?

Q220Easy

A patient with extensive injuries who is unlikely to survive with available care is classified as which color under triage?

Trauma Indian Medical PG Practice Questions and MCQs

Question 211: Which of the following agents can be used for granulation tissue after eschar separation in burns?

A. Silver sulfadiazine
B. Silver Nitrate
C. Povidone Iodine (Correct Answer)
D. Mafenide acetate

Explanation: **Explanation:** The management of a burn wound evolves through different stages. Once the **eschar** (necrotic tissue) has separated, the underlying **granulation tissue** is exposed. At this stage, the goal shifts from aggressive eschar penetration to protecting the delicate new tissue and preparing the wound bed for skin grafting. **Why Povidone-Iodine is correct:** Povidone-iodine (Betadine) is an effective antiseptic with a broad spectrum of activity. In the context of healthy granulation tissue, it is often used in a dilute form or as impregnated gauze. It helps maintain a relatively dry wound environment, prevents superficial infection, and promotes the maturation of granulation tissue, making it an ideal choice after eschar separation. **Analysis of Incorrect Options:** * **Silver Sulfadiazine (SSD):** The gold standard for early burn care. However, it can cause **pseudo-eschar** formation and may actually delay re-epithelialization or inhibit the growth of fresh granulation tissue. * **Silver Nitrate (0.5%):** While effective against surface bacteria, it is known to be **cytotoxic** to new epithelium and can cause electrolyte imbalances (hyponatremia/hypochloremia) and staining. * **Mafenide Acetate (Sulfamylon):** This is the agent of choice for **thick eschar** and ear burns due to its superior penetration. However, it is painful on application and can cause metabolic acidosis (via carbonic anhydrase inhibition), making it unsuitable for application on large areas of exposed granulation tissue. **High-Yield Clinical Pearls for NEET-PG:** * **Mafenide Acetate:** Best for cartilage (ears) and thick eschar; side effect is **Metabolic Acidosis**. * **Silver Sulfadiazine:** Most commonly used; side effect is **Transient Leukopenia**. * **Silver Nitrate:** Causes **Methemoglobinemia** and electrolyte disturbances. * **Rule of 9s:** Used for initial assessment of burn surface area (Wallace Rule).

Question 212: In an open injury, after toileting and debridement, muscle viability is detected by:

A. Colour of the muscle (Correct Answer)
B. Muscle size
C. Muscle function
D. All of the above

Explanation: In trauma surgery, assessing muscle viability is critical during debridement to prevent infection and gas gangrene. The standard clinical assessment follows the **"4 Cs" rule**. ### Why "Colour" is the Correct Answer The **Colour** of the muscle is one of the primary indicators of viability. Healthy, viable muscle is typically **beefy red**. If the muscle appears pale, dark blue, or black, it indicates ischemia or necrosis, necessitating excision. The complete **4 Cs of Muscle Viability** are: 1. **Colour:** Beefy red is viable; pale/dark is non-viable. 2. **Consistency:** Viable muscle is firm and resilient; non-viable muscle is friable and "mushy." 3. **Capacity to bleed:** Viable muscle shows brisk punctate bleeding when cut. 4. **Contractility:** Viable muscle contracts when pinched with forceps or stimulated electrically. ### Why Other Options are Incorrect * **B. Muscle Size:** The size or bulk of a muscle does not indicate its physiological health. A large muscle can be necrotic (e.g., in compartment syndrome), and a small muscle can be perfectly healthy. * **C. Muscle Function:** In an acute trauma setting, muscle function (active contraction by the patient) cannot be reliably assessed due to pain, nerve injury, or the use of anesthesia/muscle relaxants during surgery. ### NEET-PG High-Yield Pearls * **Most Reliable Sign:** While all 4 Cs are used, **Contractility** is often cited as the most reliable clinical sign of viability, followed by **Bleeding**. * **Objective Test:** If clinical signs are ambiguous, **Fluorescein dye** injection or **Technetium-99m pyrophosphate scans** can be used, though these are rarely done in emergency settings. * **Management:** Non-viable muscle must be debrided until healthy, bleeding tissue is reached to minimize the risk of *Clostridial* infections.

Question 213: A 19-year-old man sustained a blunt injury to his upper abdomen after falling off his skateboard. Abdominal CT and magnetic resonance cholangiopancreatography (MRCP) confirmed transection of the main pancreatic duct at the middle of the pancreatic body. What is the most appropriate next step in management?

A. Nonoperative treatment
B. Endoscopic retrograde cholangiopancreatography (ERCP) with stenting of the pancreatic duct
C. Distal pancreatectomy with splenic preservation (Correct Answer)
D. Primary repair of the pancreatic duct with closed suction drainage

Explanation: ### Explanation The management of pancreatic trauma is primarily determined by the integrity of the **main pancreatic duct (MPD)**. This patient has a **Grade III pancreatic injury** (distal transection or parenchymal injury with duct involvement) according to the American Association for the Surgery of Trauma (AAST) classification. **Why Option C is Correct:** When the MPD is transected in the body or tail (to the left of the superior mesenteric vein), the gold standard treatment is a **distal pancreatectomy**. Since the patient is young and likely hemodynamically stable (implied by the ability to undergo MRCP), **splenic preservation** is preferred to avoid the lifelong risk of Overwhelming Post-Splenectomy Infection (OPSI). Leaving a transected duct leads to persistent pancreatic ascites, fistula formation, or pseudocysts. **Why Other Options are Incorrect:** * **Option A:** Nonoperative management is reserved for Grade I and II injuries where the duct is intact. Duct disruption requires surgical or endoscopic intervention. * **Option B:** While ERCP can be diagnostic, stenting is rarely definitive for a complete transection. It is technically difficult and carries a high failure rate in acute trauma compared to the definitive nature of resection. * **Option D:** Primary repair of the pancreatic duct is technically demanding and associated with a very high incidence of stricture and fistula. It is not the standard of care. **High-Yield Clinical Pearls for NEET-PG:** * **AAST Grade III:** Injury to the left of the SMV (Distal) → Distal pancreatectomy. * **AAST Grade IV:** Injury to the right of the SMV (Proximal/Head) → Drainage or Roux-en-Y pancreaticojejunostomy. * **AAST Grade V:** Massive destruction of the pancreatic head → Whipple’s procedure (Pancreaticoduodenectomy). * **Investigation of Choice:** Contrast-Enhanced CT (CECT) is the initial investigation; MRCP/ERCP are used if ductal integrity is uncertain.

Question 214: What is the formula for calculating IV fluid requirements for a burns patient over the first 24 hours?

A. Total % body surface area × weight (in kg) × 4 mL = volume in mL (Correct Answer)
B. Total % body surface area × weight (in kg) × 3 mL = volume in mL
C. Total % body surface area × weight (in kg) × 2 mL = volume in mL
D. Total % body surface area × weight (in kg) × 6 mL = volume in mL

Explanation: **Explanation:** The correct answer is **Option A**. This formula is known as the **Parkland Formula** (or Baxter Formula), which is the gold standard for initial fluid resuscitation in burn patients. **1. Why Option A is Correct:** The Parkland Formula calculates the total volume of **Lactated Ringer’s (LR)** required in the first 24 hours following a major burn: * **Formula:** 4 mL × Weight (kg) × % Total Body Surface Area (TBSA) burned. * **Mechanism:** Burns cause a massive systemic inflammatory response leading to "capillary leak," where fluid shifts from the intravascular to the interstitial space. The 4 mL/kg constant ensures adequate volume to maintain end-organ perfusion (specifically renal perfusion) and prevent hypovolemic shock. * **Administration:** Half of the total volume is given in the **first 8 hours** (from the time of injury), and the remaining half is given over the next 16 hours. **2. Why Other Options are Incorrect:** * **Option B (3 mL):** This is often used in the **Modified Parkland Formula** for pediatric patients or specific chemical burns, but it is not the standard adult resuscitation volume. * **Option C (2 mL):** This represents the **Modified Brooke Formula**. While used in some centers to avoid "fluid creep" (over-resuscitation), it is not the primary answer for standard NEET-PG questions unless specified. * **Option D (6 mL):** This volume is excessively high and would likely lead to pulmonary edema and abdominal compartment syndrome. **3. NEET-PG High-Yield Pearls:** * **Fluid of Choice:** Crystalloids, specifically **Lactated Ringer’s**, are preferred because they are isotonic and the lactate helps buffer the metabolic acidosis common in trauma. * **TBSA Calculation:** Use the **Rule of Nines** for adults and the **Lund-Browder Chart** for children (most accurate). * **Monitoring:** The best indicator of adequate fluid resuscitation is **Urine Output (UOP)**. Target: **0.5–1.0 mL/kg/hr** in adults and **1.0 mL/kg/hr** in children. * **Timing:** Always calculate the 8-hour window from the **time of the burn injury**, not the time of hospital arrival.

Question 215: The Glasgow Coma Scale (GCS) is determined by taking the best response in each category and totaling them; it ranges from?

A. 3 to 15 (Correct Answer)
B. 0 to 12
C. 8 to 15
D. 3 to 10

Explanation: ### Explanation The **Glasgow Coma Scale (GCS)** is the gold standard clinical tool used to assess a patient's level of consciousness following a head injury. It evaluates three specific categories of neurological response: **Eye Opening (E), Verbal Response (V), and Motor Response (M).** **1. Why Option A is Correct:** The GCS score is calculated by summing the scores of the three components: * **Eye Opening (E):** Ranges from 1 (No response) to 4 (Spontaneous). * **Verbal Response (V):** Ranges from 1 (No response) to 5 (Oriented). * **Motor Response (M):** Ranges from 1 (No response) to 6 (Obeys commands). The **minimum score** possible is **3** (E1 + V1 + M1), indicating deep coma or brain death. The **maximum score** is **15** (E4 + V5 + M6), indicating a fully awake and oriented individual. **2. Why Other Options are Incorrect:** * **Option B (0 to 12):** Incorrect because the scale does not start at zero. Even in a patient with no response, the minimum score for each category is 1. * **Option C (8 to 15):** Incorrect. While a score of 8 or less is the clinical definition of a "coma," the scale itself extends down to 3. * **Option D (3 to 10):** Incorrect. This underestimates the maximum possible motor and verbal responses. **3. Clinical Pearls for NEET-PG:** * **Severity Classification:** * Mild Head Injury: GCS 13–15 * Moderate Head Injury: GCS 9–12 * Severe Head Injury: GCS ≤ 8 (**"GCS of 8, Intubate!"**) * **Motor Response (M):** This is the most significant prognostic indicator among the three components. * **Recording:** If a patient is intubated, the verbal score is recorded as 'T' (e.g., GCS 10T), and the total is out of 10. * **Modified GCS:** For children under 4 years, a **Paediatric GCS** is used, which modifies the verbal and motor components to account for developmental stages.

Question 216: A 60-year-old alcoholic sustained blunt trauma to his head due to assault and is brought to the ER. He opens his eyes to pain, speaks incomprehensible words when his sternum is pressed, and withdraws his hand to pain. What is his Glasgow Coma Score?

A. 6
B. 8 (Correct Answer)
C. 10
D. 12

Explanation: The Glasgow Coma Scale (GCS) is a critical tool in trauma management used to assess a patient's level of consciousness. It evaluates three components: Eye opening (E), Verbal response (V), and Motor response (M). ### **Calculation for this patient:** 1. **Eye Opening (E):** The patient opens his eyes to pain. This corresponds to a score of **2**. (Spontaneous = 4, To speech = 3, To pain = 2, None = 1). 2. **Verbal Response (V):** The patient speaks incomprehensible words. This corresponds to a score of **2**. (Oriented = 5, Confused = 4, Inappropriate words = 3, Incomprehensible sounds = 2, None = 1). 3. **Motor Response (M):** The patient withdraws his hand to pain (Flexion withdrawal). This corresponds to a score of **4**. (Obeys commands = 6, Localizes pain = 5, Withdraws to pain = 4, Abnormal flexion/decorticate = 3, Extension/decerebrate = 2, None = 1). **Total GCS = E2 + V2 + M4 = 8.** ### **Analysis of Incorrect Options:** * **Option A (6):** This would be the score if the patient had no eye opening (1), no verbal response (1), and withdrawal to pain (4). * **Option C (10):** This would require higher responses, such as opening eyes to speech (3) and localizing pain (5). * **Option D (12):** This indicates mild head injury; the clinical description of incomprehensible words and pain-only responses is too severe for this score. ### **NEET-PG High-Yield Pearls:** * **GCS Classification:** Mild (13–15), Moderate (9–12), Severe (≤ 8). * **Clinical Rule:** "GCS of 8, Intubate!" Patients with a score of 8 or less typically require airway protection. * **Motor Component:** The motor score is the most reliable predictor of clinical outcome. * **Minimum/Maximum:** The lowest possible score is 3 (not 0), and the highest is 15.

Question 217: In traumatic brain injury, what is the target cerebral perfusion pressure that should be maintained?

A. 35 - 50 mm Hg
B. 50 - 70 mm Hg
C. 70 - 90 mm Hg (Correct Answer)
D. > 90 mm Hg

Explanation: **Explanation:** The management of Traumatic Brain Injury (TBI) focuses on preventing secondary brain injury by ensuring adequate oxygenation and perfusion. **Cerebral Perfusion Pressure (CPP)** is defined as the difference between the Mean Arterial Pressure (MAP) and the Intracranial Pressure (ICP) $[CPP = MAP - ICP]$. **Why 70 – 90 mm Hg is Correct:** According to standard surgical guidelines (including ATLS and Bailey & Love), the goal in TBI is to maintain a CPP between **70 and 90 mm Hg**. This range ensures sufficient blood flow to overcome increased intracranial pressure, preventing cerebral ischemia while avoiding the risks of hyperperfusion. **Analysis of Incorrect Options:** * **A (35 – 50 mm Hg):** This range is critically low. A CPP below 50 mm Hg is associated with significant cerebral ischemia and poor neurological outcomes. * **B (50 – 70 mm Hg):** While some neurosurgical protocols accept 60 mm Hg as a minimum, 50–70 mm Hg is generally considered suboptimal in the acute phase of severe TBI where higher pressures are needed to salvage the penumbra. * **D (> 90 mm Hg):** Excessively high CPP (above 90-100 mm Hg) increases the risk of **Acute Respiratory Distress Syndrome (ARDS)** and cerebral edema due to hydrostatic pressure, without providing additional neurological benefit. **High-Yield Clinical Pearls for NEET-PG:** * **Normal ICP:** 5 – 15 mm Hg. Treatment for intracranial hypertension is usually initiated when ICP > 20–22 mm Hg. * **Cushing’s Triad (Sign of increased ICP):** Hypertension, Bradycardia, and Irregular respirations. * **Monro-Kellie Doctrine:** The cranial vault is a fixed volume; an increase in one constituent (blood, CSF, or brain) must be compensated by a decrease in another, or ICP will rise. * **First-line management for raised ICP:** Head elevation (30°), sedation, and osmotic therapy (Mannitol or Hypertonic saline).

Question 218: Stress ulcers seen in burns are termed as?

A. Curling's ulcer (Correct Answer)
B. Cushing's ulcer
C. Meleney's ulcer
D. Rodent ulcer

Explanation: **Explanation:** **Curling’s Ulcer (Correct Answer):** Curling’s ulcers are acute gastric erosion/ulcerations that occur as a complication of **severe burns**. The underlying pathophysiology involves severe hypovolemia leading to mucosal ischemia and reduced protective mucus production. This allows gastric acid to cause deep ulcerations, most commonly in the **duodenum** (though they can occur in the stomach). * *Mnemonic:* **C**urling’s = **C**onflagration (Burns). **Incorrect Options:** * **Cushing’s Ulcer:** These are stress ulcers associated with **increased intracranial pressure** (due to head injury, tumors, or surgery). The mechanism involves overstimulation of the vagus nerve, leading to hypersecretion of gastric acid. They are more likely to occur in the esophagus or stomach and have a higher risk of perforation. * *Mnemonic:* **C**ushing’s = **C**ushion (Head/Brain). * **Meleney’s Ulcer:** Also known as progressive bacterial synergistic gangrene, this is a rare, slowly progressive infection of the subcutaneous tissue, usually following abdominal surgery. It is not a gastric ulcer. * **Rodent Ulcer:** This is a clinical term for **Basal Cell Carcinoma (BCC)**, typically occurring on the face. It is a slow-growing skin malignancy that "gnaws" into local tissues like a rodent. **High-Yield Clinical Pearls for NEET-PG:** * **Prophylaxis:** Proton Pump Inhibitors (PPIs) or H2 blockers are standard in burn units to prevent these ulcers. * **Most common site:** For Curling’s, it is the first part of the duodenum; for Cushing’s, it is the stomach. * **Cameron Ulcer:** Linear gastric erosions found within a large hiatal hernia. * **Dieulafoy’s Lesion:** A large submucosal artery that causes massive GI bleeding, typically in the proximal stomach.

Question 219: What is the correct sequence of resuscitation in a trauma patient?

A. Circulation, airway, and breathing
B. Airway, breathing, and circulation (Correct Answer)
C. Airway, circulation, and breathing
D. Breathing, airway, and circulation

Explanation: The correct sequence of resuscitation in a trauma patient follows the **ATLS (Advanced Trauma Life Support)** guidelines, prioritizing the **ABCDE** approach. ### **Explanation of the Correct Answer (B)** The primary goal of trauma resuscitation is to address the most immediate threats to life first. 1. **Airway (with Cervical Spine Protection):** A blocked airway can kill a patient within minutes. Ensuring a patent airway is the absolute first priority. 2. **Breathing:** Once the airway is clear, the clinician must ensure adequate ventilation and oxygenation (e.g., ruling out tension pneumothorax). 3. **Circulation:** After oxygenation is secured, the focus shifts to hemodynamic stability and hemorrhage control. ### **Why Other Options are Incorrect** * **Option A (C-A-B):** This is the sequence for **Basic Life Support (BLS)** in non-traumatic cardiac arrest (AHA guidelines). In trauma, the cause of arrest is rarely primary cardiac; it is usually airway obstruction or hemorrhage. * **Options C & D:** These deviate from the physiological hierarchy. Without a patent airway, providing circulation (C) or breathing (B) is ineffective as oxygen cannot reach the lungs or the systemic circulation. ### **High-Yield Clinical Pearls for NEET-PG** * **The "C-ABC" Exception:** In cases of **catastrophic/exsanguinating external hemorrhage**, the sequence shifts to **C-ABC** (Control of massive bleeding first) to prevent immediate exsanguination. * **C-Spine:** Always assume a cervical spine injury in any blunt trauma above the clavicle; airway management must include **Manual In-Line Stabilization (MILS)**. * **The "Golden Hour":** The first 60 minutes post-injury where prompt ABC intervention significantly reduces mortality. * **Definitive Airway:** A cuffed tube in the trachea (Endotracheal Intubation) is the gold standard for securing the 'A'.

Question 220: A patient with extensive injuries who is unlikely to survive with available care is classified as which color under triage?

A. Red
B. Grey
C. Green
D. Black (Correct Answer)

Explanation: **Explanation:** In disaster management and mass casualty incidents (MCI), **Triage** is the process of prioritizing patients based on the severity of their injuries and their likelihood of survival with available resources. **Correct Answer: D. Black** The **Black Tag** is reserved for patients who are either deceased or have injuries so extensive that they are **unlikely to survive** given the current care capacity (e.g., massive head trauma, 90% full-thickness burns). In a resource-limited disaster setting, medical efforts are diverted away from these "expectant" cases toward those with a higher probability of survival. **Analysis of Incorrect Options:** * **A. Red (Immediate):** These patients have life-threatening injuries (e.g., tension pneumothorax, airway obstruction) but a **high chance of survival** if treated immediately. They are the top priority. * **B. Grey (Urgent/Delayed):** While some international systems use grey for expectant cases, the standard **START (Simple Triage and Rapid Treatment)** protocol used in most exams uses **Yellow** for "Delayed" cases (stable fractures, large wounds) that require care but are not immediately life-threatening. * **C. Green (Minor):** These are the "walking wounded" with minor injuries who can wait several hours for treatment. **High-Yield Clinical Pearls for NEET-PG:** * **Mnemonic (RPM):** Triage is often based on **R**espirations, **P**erfusion (Radial pulse), and **M**ental status. * **Reverse Triage:** In military settings or specific civilian scenarios, the least injured are sometimes treated first to return them to the front lines or to clear the scene. * **Color Coding Summary:** * **Red:** Priority 1 (Immediate) * **Yellow:** Priority 2 (Delayed) * **Green:** Priority 3 (Minor/Walking wounded) * **Black:** Priority 4 (Dead/Expectant)

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