Trauma Practice Questions

Q: Trauma to spleen in a stable patient is best diagnosed by?

CT scan. **Explanation:** The gold standard for diagnosing splenic trauma in a **hemodynamically stable** patient is a **Contrast-Enhanced Computed Tomography (CECT) scan**. **Why CT Scan is the Correct Choice:** In a stable patient, CECT provides the highest sensitivity and specificity. It allows for accurate **grading of the injury** (AAST Scale), identifies the presence of a "contrast blush" (indicating active extravasation), and evaluates the retroperitoneum and other solid organs. This information is crucial for deciding between non-operative management (NOM) and surgical intervention. **Analysis of Incorrect Options:** * **X-ray Abdomen:** This is non-specific. While it may show indirect signs like the "Ballance’s sign" or "Kehr’s sign" (referred pain), it cannot visualize parenchymal damage or grade the injury. * **USG (FAST):** Focused Assessment with Sonography for Trauma is the initial screening tool of choice for **unstable** patients. While it detects free intraperitoneal fluid (hemoperitoneum), it is operator-dependent and poor at grading specific organ injuries or detecting subcapsular hematomas. * **Diagnostic Peritoneal Lavage (DPL):** This is an invasive procedure used primarily in **unstable** patients when USG is unavailable. It is highly sensitive for blood but cannot localize the source of bleeding or grade the injury, often leading to unnecessary laparotomies. **Clinical Pearls for NEET-PG:** * **Hemodynamically Stable:** CECT is the investigation of choice. * **Hemodynamically Unstable:** FAST is the initial investigation of choice. * **Most common organ injured** in blunt trauma abdomen: Spleen (followed by Liver). * **Management Trend:** Most splenic injuries (Grades I-III) in stable patients are now managed conservatively (Non-operative management).

Q: A patient with burns presents to the emergency room and has started on intravenous fluids. What is the best method to assess the adequacy of volume replacement?

Urine output. **Explanation:** In the management of acute burn injury, the primary goal of fluid resuscitation is to maintain end-organ perfusion while avoiding fluid overload. **Why Urine Output (UOP) is the Correct Answer:** Urine output is considered the **most reliable, non-invasive, and sensitive clinical indicator** of visceral organ perfusion and cardiac output in burn patients. It reflects the adequacy of renal blood flow, which serves as a proxy for overall tissue perfusion. * **Target UOP for Adults:** 0.5 ml/kg/hr (or approx. 30–50 ml/hr). * **Target UOP for Children (<30kg):** 1 ml/kg/hr. * **Target UOP for Electrical Burns:** 75–100 ml/hr (to prevent acute tubular necrosis from myoglobinuria). **Why Other Options are Incorrect:** * **Pulse Rate & Systolic BP:** These are unreliable in the early stages of burns. The massive release of catecholamines (stress response) causes tachycardia and peripheral vasoconstriction, which may maintain blood pressure even in a state of significant hypovolemia. * **Central Venous Pressure (CVP):** While CVP measures right atrial pressure, it is an invasive procedure and does not always correlate with total intravascular volume in burn patients due to changes in pulmonary vascular resistance and chest wall compliance (especially in circumferential chest burns). **High-Yield Clinical Pearls for NEET-PG:** * **Parkland Formula:** 4 ml × TBSA% × Weight (kg). Give half in the first 8 hours and the remainder over the next 16 hours. * **Fluid of Choice:** Ringer’s Lactate (Isotonic crystalloid). * **Baxter’s Formula:** Same as Parkland but uses 4ml/kg/%. * **Modified Brooke Formula:** Uses 2ml/kg/%. * **Rule of 10s:** A simplified method for initial fluid rates: (TBSA% × 10) for patients 40–80 kg.

Q: For the evaluation of blunt abdominal trauma, which of the following imaging modalities is ideal?

Computed tomography. **Explanation:** **Computed Tomography (CT)**, specifically Contrast-Enhanced CT (CECT), is the **gold standard** and ideal imaging modality for evaluating hemodynamically stable patients with blunt abdominal trauma (BAT). 1. **Why CT is Correct:** CT offers superior sensitivity and specificity for identifying solid organ injuries (liver, spleen, kidneys), detecting retroperitoneal hemorrhages, and diagnosing hollow viscus perforations. It allows for "grading" of organ injuries, which guides the decision between conservative management and surgical intervention. Modern multidetector CT (MDCT) is also excellent at detecting "active contrast extravasation" (blush), indicating active bleeding. 2. **Why Other Options are Incorrect:** * **Ultrasonography (FAST):** While **Focused Assessment with Sonography for Trauma (FAST)** is the initial screening tool for unstable patients to detect free intraperitoneal fluid (hemoperitoneum), it cannot reliably grade organ injuries, visualize the retroperitoneum, or detect bowel injuries. * **Nuclear Scintigraphy:** This is too slow, lacks anatomical detail, and is not used in acute trauma settings. * **Magnetic Resonance Imaging (MRI):** Although highly detailed, MRI is impractical in trauma due to long scan times, difficulty in monitoring unstable patients, and incompatibility with many resuscitation equipments. **High-Yield Clinical Pearls for NEET-PG:** * **Hemodynamically Unstable + Positive FAST:** Proceed directly to **Laparotomy**. * **Hemodynamically Stable:** **CECT** is the investigation of choice. * **The "Triple Sign" on CT** (Pneumoperitoneum, bowel wall thickening, and free fluid without solid organ injury) suggests a **hollow viscus injury**. * **Splenic injury** is the most common organ injury in blunt trauma, followed by the liver.

Q: In a patient with a head injury, which of the following is most important to assess first?

Ability to open eyes. In the initial assessment of a head injury patient, the **Glasgow Coma Scale (GCS)** is the gold standard for evaluating the level of consciousness. The GCS consists of three components: Eye opening (E), Verbal response (V), and Motor response (M). **Why "Ability to open eyes" is the correct answer:** The ability to open eyes is the **first component** of the GCS assessment. It provides an immediate indication of the functioning of the reticular activating system in the brainstem and the cortex. In trauma protocols (ATLS), assessing the GCS (starting with eye-opening) is a priority under the "D" (Disability/Neurological status) of the Primary Survey. It is a more sensitive and earlier indicator of neurological decline than brainstem reflexes. **Explanation of Incorrect Options:** * **Pupillary light reflex & Pupillary size (Options A & B):** While vital, these are part of the pupillary examination used to detect signs of herniation (e.g., a blown pupil in uncal herniation). They are assessed *after* or alongside the GCS, not as the very first step. * **Corneal reflex (Option C):** This is a brainstem reflex (Cranial Nerves V and VII). It is typically assessed in deeply comatose patients to determine the depth of the coma or brain death, rather than as an initial screening tool in acute trauma. **High-Yield Clinical Pearls for NEET-PG:** * **GCS Scoring:** Eye opening is scored from 1 to 4. (4: Spontaneous, 3: To speech, 2: To pain, 1: None). * **Minimum/Maximum Score:** The lowest GCS score is 3 (not 0), and the maximum is 15. * **Intubation Threshold:** A GCS score of **8 or less** is an indication for endotracheal intubation ("GCS less than 8, intubate"). * **Motor Response:** The Motor component (M) is the most significant predictor of overall prognosis.

Q: What is considered a secondary brain injury?

Intracerebral hematoma. ### Explanation In traumatic brain injury (TBI), brain damage is categorized into two distinct phases: **Primary** and **Secondary** injury. **1. Why Intracerebral Hematoma is the Correct Answer:** Secondary brain injury refers to the physiological and metabolic changes that occur **after** the initial impact. While the impact itself may cause a vessel to rupture, the "injury" in a clinical sense refers to the subsequent expansion of the hematoma, leading to increased intracranial pressure (ICP), cerebral edema, ischemia, and biochemical cascades (like glutamate excitotoxicity). Among the options provided, an **intracerebral hematoma** is a dynamic process that evolves over hours or days, contributing to secondary neurological deterioration. **2. Analysis of Incorrect Options:** * **A. Concussion:** This is a **primary injury**. It is a functional disturbance caused by the direct mechanical force at the moment of impact. * **B. Diffuse Axonal Injury (DAI):** This is a **primary injury** resulting from shearing forces (acceleration/deceleration) that occur at the instant of trauma, leading to widespread axonal stretching or tearing. * **C. Depressed Skull Fracture:** This is a **primary injury**. It is a structural mechanical deformity occurring at the exact moment of the traumatic event. **3. Clinical Pearls for NEET-PG:** * **Primary Injury:** Occurs at T = 0. Includes contusions, lacerations, DAI, and skull fractures. It is best managed by **prevention** (e.g., helmets, seatbelts). * **Secondary Injury:** Occurs minutes to days later. Major causes include **Hypoxia (PaO₂ < 60 mmHg)** and **Hypotension (SBP < 90 mmHg)**. * **The "Golden Rule" of TBI Management:** The primary goal in the Emergency Department is to prevent secondary brain injury by maintaining adequate oxygenation and cerebral perfusion pressure (CPP). * **Cushing’s Triad (Sign of increased ICP):** Hypertension, Bradycardia, and Irregular Respiration.

Q: A patient with burns should be administered which of the following?

Human albumin 4.5%. **Explanation:** In the management of major burns, fluid resuscitation is critical to counteract the massive shift of fluid from the intravascular to the interstitial space (burn shock). While crystalloids (like Ringer’s Lactate) are the mainstay of the initial 24 hours (Parkland formula), the use of **colloids** becomes essential in the subsequent phase. **Why Human Albumin 4.5% is the Correct Answer:** After the first 8–24 hours post-burn, capillary permeability begins to normalize. At this stage, administering **Human Albumin (a colloid)** is indicated to increase the plasma oncotic pressure. This helps "pull" fluid back into the intravascular compartment, reducing tissue edema and maintaining hemodynamic stability with lower total fluid volumes compared to crystalloids alone. In many modern protocols and exam-based scenarios, albumin is the preferred choice for protein replacement and volume expansion in severe burns. **Analysis of Incorrect Options:** * **A & C (5% Dextrose / Dextrose Saline):** These are hypotonic or maintenance fluids. In the acute phase of burns, they rapidly leave the intravascular space, worsening interstitial edema and failing to support blood pressure. * **B (Hypertonic Saline 0.9%):** Note that 0.9% Saline is actually **Isotonic**, not hypertonic. While used in some protocols, it lacks the oncotic pressure provided by albumin and can lead to hyperchloremic acidosis if used in large volumes. **High-Yield Clinical Pearls for NEET-PG:** * **Parkland Formula:** $4 \text{ ml} \times \text{Body Weight (kg)} \times \% \text{ TBSA}$. Give half in the first 8 hours. * **Fluid of Choice (First 24h):** Ringer’s Lactate (Isotonic crystalloid). * **Best Indicator of Resuscitation:** Urine output ($0.5\text{--}1.0 \text{ ml/kg/hr}$ in adults; $1.0 \text{ ml/kg/hr}$ in children). * **Colloid Timing:** Usually introduced after 18–24 hours when capillary leak diminishes.

Q: What is the first priority in managing a severely injured patient with a spinal fracture and unconsciousness?

Airway maintenance. **Explanation:** The management of a polytrauma patient follows the **ATLS (Advanced Trauma Life Support)** protocol, which prioritizes life-threatening conditions in a specific sequence: **ABCDE** (Airway, Breathing, Circulation, Disability, Exposure). **Why Airway maintenance is the correct answer:** In an unconscious patient, the tongue often falls back, obstructing the oropharynx. Regardless of other injuries (spinal or cranial), **Airway (A)** is the absolute first priority. Without a patent airway, oxygenation fails, leading to rapid irreversible brain damage and death. In cases of suspected spinal injury, the airway must be secured while maintaining **Manual In-line Axial Stabilization (MIAS)** to protect the cord. **Analysis of Incorrect Options:** * **B. Spinal stabilization:** While critical in spinal fractures, it is part of "A" (Airway with cervical spine protection). However, if the airway is blocked, the patient will die before spinal stability becomes the limiting factor. * **A. GCS scoring:** This is part of the **Disability (D)** assessment. It is performed only after ABC (Airway, Breathing, and Circulation) have been stabilized. * **C. Administer mannitol:** This is a specific treatment for raised intracranial pressure (ICP). It is a secondary intervention and is never prioritized over the primary survey (ABCDE). **NEET-PG High-Yield Pearls:** * **The "Golden Hour":** The first 60 minutes after trauma where prompt intervention significantly reduces mortality. * **Airway in Trauma:** The preferred method to open the airway in a suspected spine injury is the **Jaw Thrust maneuver**, as it avoids neck extension (unlike the Head-tilt/Chin-lift). * **Definitive Airway:** An endotracheal tube is the gold standard for securing the airway in an unconscious patient (GCS ≤ 8).

Q: Anti mongoloid slant is a feature of which of the following?

Le Fort III fracture. **Explanation:** **Le Fort III fracture** (Craniofacial dysjunction) involves the complete separation of the midface from the cranial base. The fracture line passes through the nasofrontal suture, the ethmoid bone, the orbit (medial wall, floor, and lateral wall), and the zygomaticofrontal suture. The **Anti-mongoloid slant** (downward outward slant of the palpebral fissure) occurs in Le Fort III fractures due to the disruption of the **zygomaticofrontal suture**. This leads to the displacement of the zygoma and the lateral orbital rim, causing the lateral canthal ligament (which attaches to the Whitnall tubercle on the zygoma) to sag inferiorly. **Analysis of Incorrect Options:** * **Naso-orbitoethmoid (NOE) fracture:** Characterized by traumatic telecanthus (increased distance between medial canthi) due to disruption of the medial canthal ligament, but it does not typically cause a downward slant of the lateral eye. * **Le Fort I:** A horizontal fracture above the apices of the teeth (Guerin’s fracture). It involves only the dentoalveolar segment; the orbits are not involved. * **Le Fort II:** A pyramidal fracture involving the maxilla and nasal bones. While it involves the infraorbital rim, the lateral orbital wall and zygomaticofrontal suture remain intact, so the palpebral slant is generally preserved. **High-Yield Clinical Pearls for NEET-PG:** * **Dish-face deformity:** A classic feature of Le Fort II and III due to midface retrusion. * **Lengthening of the face:** Common in Le Fort II and III. * **CSF Rhinorrhea:** Most common in Le Fort II and III due to involvement of the ethmoid/cribriform plate. * **Guérin’s sign:** Ecchymosis in the region of the greater palatine vessels (seen in Le Fort fractures).

Question 1

Trauma to spleen in a stable patient is best diagnosed by?

Accepted Answer

CT scan

Answer

X-ray abdomen

Answer

USG

Answer

Diagnostic peritoneal lavage

Question 2

A patient with burns presents to the emergency room and has started on intravenous fluids. What is the best method to assess the adequacy of volume replacement?

Accepted Answer

Urine output

Answer

Pulse rate

Answer

Systolic blood pressure

Answer

Central venous pressure

Question 3

A 26-year-old man is stabbed in the right intercostal space in the midclavicular line and presents to the emergency department. On examination, subcutaneous emphysema of the right chest wall, absent breath sounds, and a trachea shifted to the left are noted. What is the most likely serious diagnosis?

Accepted Answer

Tension pneumothorax

Answer

Pneumothorax

Answer

Massive hemothorax

Answer

Hemopneumothorax

Question 4

For the evaluation of blunt abdominal trauma, which of the following imaging modalities is ideal?

Accepted Answer

Computed tomography

Answer

Ultrasonography

Answer

Nuclear scintigraphy

Answer

Magnetic resonance imaging

Question 5

In a patient with a head injury, which of the following is most important to assess first?

Accepted Answer

Ability to open eyes

Answer

Pupillary light reflex

Answer

Pupillary size

Answer

Corneal reflex

Question 6

What is considered a secondary brain injury?

Accepted Answer

Intracerebral hematoma

Answer

Concussion

Answer

Diffuse axonal injury

Answer

Depressed skull fracture

Question 7

Which of the following statements are true about Flail chest?

Accepted Answer

1, 4, 5 are true and 2, 3 are false

Answer

3, 4, 5 are true and 1, 2 are false

Answer

3, 4, 5 are false and 1, 2 are true

Answer

1, 2, 4 are false and 3, 5 are true

Question 8

A patient with burns should be administered which of the following?

Accepted Answer

Human albumin 4.5%

Answer

5% dextrose

Answer

Hypertonic saline 0.9%

Answer

Dextrose saline

Question 9

What is the first priority in managing a severely injured patient with a spinal fracture and unconsciousness?

Accepted Answer

Airway maintenance

Answer

Glasgow Coma Scale (GCS) scoring

Answer

Spinal stabilization using a cervical collar

Answer

Administer mannitol drip to decrease intracranial pressure (ICP)

Question 10

Anti mongoloid slant is a feature of which of the following?

Accepted Answer

Le Fort III fracture

Answer

Naso-orbitoethmoid fracture

Answer

Le Fort I fracture

Answer

Le Fort II fracture

Trauma — MCQs

Trauma — MCQs

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