Trauma Practice Questions

Q: Which of the following statements regarding the Glasgow Coma Scale is true?

All the above.. The **Glasgow Coma Scale (GCS)** is a standardized clinical tool used to assess the level of consciousness in patients with acute brain injury. It evaluates three components: **Eye opening (E), Verbal response (V), and Motor response (M).** ### **Detailed Explanation** * **Option A is true:** The GCS is the sum of E+V+M. The minimum score possible is **3** (no response in any category), and the maximum is **15** (fully awake and oriented). There is no score of zero. * **Option B is true:** Traditionally, a GCS score of **8 or less** defines a coma. Therefore, a score less than 7 (which is $\leq 6$) is inherently classified as a coma. In trauma management (ATLS), a GCS $\leq 8$ is the threshold for "Severe Head Injury" and usually necessitates intubation. * **Option C is true:** By definition, a coma is characterized by the absence of eye-opening, failure to follow commands, and no word formation. Since the threshold for coma is $\leq 8$, any score **greater than 9** (9–15) excludes the diagnosis of coma and falls into the categories of moderate or mild brain injury. ### **Clinical Pearls for NEET-PG** * **Classification of Head Injury:** * **Mild:** GCS 13–15 * **Moderate:** GCS 9–12 * **Severe:** GCS 3–8 (Coma) * **The "M" Factor:** The **Motor score (M)** is the most significant predictor of clinical outcome. * **Intubation Rule:** "GCS of 8, intubate." * **Modified GCS:** For intubated patients, the verbal score is replaced with 'T' (e.g., GCS 10T). * **Paediatric GCS:** Uses different criteria for verbal and motor responses based on developmental milestones (e.g., smiling, crying).

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

Povidone Iodine. **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).

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

Colour of the muscle. 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.

Q: A 55-year-old lady presents with third-degree burns affecting both upper limbs, both lower limbs, and the perineum. How much fluid should be administered in the first 8 hours?

6710 mL. ### Explanation The calculation of fluid resuscitation in burn patients is a high-yield topic for NEET-PG, primarily utilizing the **Parkland Formula** and the **Wallace Rule of Nines**. **1. Calculating Total Body Surface Area (TBSA) involved:** Using the Rule of Nines for an adult: * Both upper limbs: 9% + 9% = 18% * Both lower limbs: 18% + 18% = 36% * Perineum: 1% * **Total TBSA = 18 + 36 + 1 = 55%** **2. Applying the Parkland Formula:** Total fluid (Ringer’s Lactate) in 24 hours = **4 mL × Body Weight (kg) × % TBSA.** *Note: If weight is not provided in a NEET-PG question, the standard adult weight is assumed to be 60–70 kg. Using 61 kg (derived from the options):* * Total Fluid = 4 mL × 61 kg × 55 = **13,420 mL** **3. Timing of Administration:** * First 8 hours: Give **half** of the total volume. * Next 16 hours: Give the remaining half. * **Fluid in first 8 hours = 13,420 / 2 = 6,710 mL.** #### Why other options are wrong: * **Options B, C, and D** represent incorrect TBSA calculations (e.g., miscounting the limbs or including the trunk) or failing to divide the total 24-hour volume by two for the initial 8-hour requirement. #### Clinical Pearls for NEET-PG: * **Fluid of Choice:** Ringer’s Lactate (Isotonic crystalloid). * **Monitoring:** The most sensitive indicator of adequate resuscitation is **Urine Output** (Target: 0.5–1 mL/kg/hr in adults; 1 mL/kg/hr in children). * **Modified Brooke Formula:** Uses 2 mL/kg/% TBSA (often used to avoid fluid overload). * **Galveston Formula:** Used for pediatric burns (based on body surface area in $m^2$).

Q: What is the name of the surgical maneuver used to mobilize the right medial visceral rotation to visualize the Inferior Vena Cava (IVC)?

Cattell-Braasch maneuver. ### Explanation The **Cattell-Braasch maneuver** is the correct answer as it describes the **right-sided medial visceral rotation**. This surgical technique involves mobilizing the right colon, the hepatic flexure, and the root of the small bowel mesentery by incising the white line of Toldt and the retroperitoneal attachments. This allows the surgeon to lift the entire right-sided viscera medially, providing extensive exposure to the **entire infrahepatic Inferior Vena Cava (IVC)**, the right renal vessels, and the superior mesenteric artery. **Analysis of Incorrect Options:** * **A. Kocher maneuver:** This is a limited mobilization of the duodenum and the head of the pancreas. While it exposes the retro-pancreatic IVC and the common bile duct, it does not involve the full medial rotation of the right colon and small bowel. * **B. Mattox maneuver:** This is a **left-sided medial visceral rotation**. It involves mobilizing the left colon, spleen, and tail of the pancreas medially to expose the **entire abdominal aorta** and left renal vessels. * **C. Pringle maneuver:** This is a bedside/intraoperative technique used to control hepatic bleeding by clamping the **hepatoduodenal ligament** (containing the portal vein, hepatic artery, and common bile duct). It does not involve visceral rotation. **High-Yield Clinical Pearls for NEET-PG:** * **Cattell-Braasch:** Right-sided rotation → IVC exposure. * **Mattox:** Left-sided rotation → Aortic exposure. * **Zone I Retroperitoneal Hematoma:** Usually requires exploration via these maneuvers (Cattell-Braasch for right/central, Mattox for left). * **Kocherization:** Essential for pancreaticoduodenectomy (Whipple procedure) to assess tumor resectability.

Q: 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?

8. 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.

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

70 - 90 mm Hg. **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).

Q: A patient with blunt abdominal trauma presents with a blood pressure of 90/60 mm Hg and a pulse rate of 124. What is the most appropriate initial investigation to perform in this patient?

Focused Assessment with Sonography for Trauma (FAST). ### Explanation The patient presents with **hemodynamic instability** (hypotension and tachycardia) following blunt abdominal trauma, indicating a **Class III hemorrhagic shock**. In an unstable patient, the primary goal is to identify the source of bleeding rapidly without moving the patient out of the resuscitation area. **1. Why FAST is the Correct Answer:** **Focused Assessment with Sonography for Trauma (FAST)** is the initial investigation of choice for hemodynamically unstable patients. It is a rapid, non-invasive, bedside tool used to detect free intraperitoneal fluid (hemoperitoneum) or pericardial tamponade. It assesses four areas: Morrison’s pouch (RUQ), splenorenal recess (LUQ), pelvis (pouch of Douglas), and the pericardium. **2. Why Other Options are Incorrect:** * **CT Abdomen:** While it is the "Gold Standard" for diagnosing solid organ injuries, it requires the patient to be **hemodynamically stable**. Moving an unstable patient to the CT suite is dangerous ("Death in the Donut Hole"). * **MRI Abdomen:** MRI has no role in acute trauma management due to the long acquisition time and incompatibility with resuscitation equipment. * **Diagnostic Peritoneal Lavage (DPL):** Although useful in unstable patients when FAST is unavailable or inconclusive, it is invasive and has been largely superseded by FAST. **Clinical Pearls for NEET-PG:** * **Stable + Blunt Trauma:** Initial investigation is **FAST**; if positive, proceed to **CECT**. * **Unstable + Blunt Trauma:** Initial investigation is **FAST**; if positive, proceed to **Emergency Laparotomy**. * **FAST Limitations:** It cannot detect <250 ml of fluid, retroperitoneal bleeds, or hollow viscus perforation. * **E-FAST:** Includes views of the thorax to rule out pneumothorax or hemothorax.

Question 1

Which of the following statements regarding the Glasgow Coma Scale is true?

Accepted Answer

All the above.

Answer

The scale ranges from 3 to 15.

Answer

A score less than 7 is classified as coma.

Answer

A score greater than 9 excludes coma.

Question 2

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

Accepted Answer

Povidone Iodine

Answer

Silver sulfadiazine

Answer

Silver Nitrate

Answer

Mafenide acetate

Question 3

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

Accepted Answer

Colour of the muscle

Answer

Muscle size

Answer

Muscle function

Answer

All of the above

Question 4

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?

Accepted Answer

Distal pancreatectomy with splenic preservation

Answer

Nonoperative treatment

Answer

Endoscopic retrograde cholangiopancreatography (ERCP) with stenting of the pancreatic duct

Answer

Primary repair of the pancreatic duct with closed suction drainage

Question 5

A 55-year-old lady presents with third-degree burns affecting both upper limbs, both lower limbs, and the perineum. How much fluid should be administered in the first 8 hours?

Accepted Answer

6710 mL

Answer

8120 mL

Answer

9120 mL

Answer

10,120 mL

Question 6

What is the name of the surgical maneuver used to mobilize the right medial visceral rotation to visualize the Inferior Vena Cava (IVC)?

Accepted Answer

Cattell-Braasch maneuver

Answer

Kocher maneuver

Answer

Mattox maneuver

Answer

Pringle maneuver

Question 7

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?

Accepted Answer

8

Answer

6

Answer

10

Answer

12

Question 8

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

Accepted Answer

70 - 90 mm Hg

Answer

35 - 50 mm Hg

Answer

50 - 70 mm Hg

Answer

> 90 mm Hg

Question 9

What is the most important step in the primary management of a patient with a fractured vertebral column?

Accepted Answer

Maintenance of the airway

Answer

Careful transportation of the patient

Answer

Treatment of shock

Answer

None of the above

Question 10

A patient with blunt abdominal trauma presents with a blood pressure of 90/60 mm Hg and a pulse rate of 124. What is the most appropriate initial investigation to perform in this patient?

Accepted Answer

Focused Assessment with Sonography for Trauma (FAST)

Answer

CT abdomen

Answer

MRI abdomen

Answer

Diagnostic Peritoneal Lavage (DPL)

Trauma — MCQs

Trauma — MCQs

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