Trauma — MCQs

Trauma Indian Medical PG Practice Questions and MCQs

Question 241: Which of the following can cause secondary brain injury?

A. Hypoxia
B. Intracranial pressure > 30mm Hg
C. Hypotension
D. All of the above (Correct Answer)

Explanation: ### Explanation **Concept:** Brain injury is classified into two phases: **Primary injury** occurs at the moment of impact (e.g., contusions, axonal shearing). **Secondary injury** refers to the subsequent biochemical and physiological insults that further damage the brain tissue. The primary goal of neurotrauma management is to prevent secondary injury by maintaining adequate **Cerebral Perfusion Pressure (CPP)**, which is calculated as: *CPP = Mean Arterial Pressure (MAP) – Intracranial Pressure (ICP).* **Why "All of the Above" is Correct:** * **Hypoxia (Option A):** The injured brain is extremely sensitive to oxygen deprivation. Hypoxia (PaO₂ < 60 mmHg) triggers anaerobic metabolism, leading to lactic acidosis and further neuronal death. * **Increased ICP (Option B):** Normal ICP is <15 mmHg. When ICP exceeds 20–25 mmHg (and certainly >30 mmHg), it compresses cerebral vasculature, reducing CPP and potentially leading to brain herniation. * **Hypotension (Option C):** A single episode of hypotension (Systolic BP < 90 mmHg) is one of the strongest predictors of poor outcome in TBI. Low MAP directly reduces CPP, causing cerebral ischemia. **Clinical Pearls for NEET-PG:** 1. **The "Golden Rule" of TBI:** Avoid the "H-bombs"—Hypotension, Hypoxia, Hypercapnia, and Hyperthermia—to minimize secondary injury. 2. **Target Values:** In trauma management, aim for a **Systolic BP ≥ 100–110 mmHg** (depending on age) and keep **ICP < 22 mmHg**. 3. **Cushing’s Triad:** A late sign of increased ICP characterized by Hypertension, Bradycardia, and Irregular respirations. 4. **Monro-Kellie Doctrine:** The cranial vault is a fixed volume; an increase in one component (blood, CSF, or brain/mass) must be compensated by a decrease in another, or ICP will rise exponentially.

Question 242: In a fracture of the zygomaticomaxillary arch, what is the most definite check point for zygomatic arch reduction?

A. Click on reduction (Correct Answer)
B. Inferior orbital rim symmetry between the two sides
C. Zygomatic buttress symmetry between the two sides
D. Zygomatic arch symmetry between the two sides

Explanation: ### Explanation In the management of zygomaticomaxillary complex (ZMC) fractures, achieving accurate anatomical reduction is critical for both functional and aesthetic outcomes. **Why "Click on reduction" is correct:** The zygomatic arch is a thin, curved bridge of bone. When it is fractured and depressed, it often becomes "telescoped" or wedged. During the reduction process (commonly using a **Gillies approach** or a **Rowe’s zygomatic elevator**), the bone is elevated outward. The **"click"** is a palpable and often audible snap that occurs when the fractured segments spring back into their original anatomical position and lock into place. This tactile feedback is considered the most definitive clinical sign that the arch has been successfully disimpacted and reduced. **Analysis of Incorrect Options:** * **B & C (Inferior orbital rim and Zygomatic buttress):** While these are important landmarks in ZMC fractures, they are often comminuted or obscured by significant soft tissue edema and hematoma during surgery. Symmetry in these areas is a goal of reconstruction but is less definitive as a "checkpoint" for the specific reduction of the arch itself. * **D (Zygomatic arch symmetry):** While symmetry is the ultimate objective, visual assessment of symmetry is notoriously difficult intraoperatively due to unilateral swelling. The "click" provides a more objective mechanical confirmation than visual comparison. **Clinical Pearls for NEET-PG:** * **Gillies Temporal Approach:** The standard surgical technique to reduce an isolated zygomatic arch fracture. The incision is made in the temporal hairline, deep to the **superficial temporal fascia** (to avoid the frontal branch of the facial nerve), and the elevator is passed deep to the **deep temporal fascia**. * **Tri-pod Fracture:** A ZMC fracture typically involves the zygomaticofrontal suture, the infraorbital rim, and the zygomaticomaxillary buttress. * **Must-know sign:** Flattening of the cheek (loss of malar prominence) is the classic clinical finding.

Question 243: What is the treatment for a 7 mm prolactinoma?

A. Transsphenoidal resection
B. Dopamine agonists (Correct Answer)
C. Stereotactic radiosurgery
D. Fractionated stereotactic radiotherapy

Explanation: **Explanation:** The primary goal in managing a prolactinoma is to normalize prolactin levels, reduce tumor size, and restore gonadal function. **1. Why Dopamine Agonists are Correct:** Prolactinomas are unique among pituitary adenomas because they are primarily managed **medically**, regardless of size. Since dopamine is the natural inhibitor of prolactin secretion, **Dopamine Agonists (e.g., Cabergoline, Bromocriptine)** are the first-line treatment. They are highly effective in shrinking the tumor and normalizing prolactin levels in over 80% of patients. A 7 mm tumor is classified as a **microadenoma** (<10 mm), which responds exceptionally well to medical therapy. **2. Why Incorrect Options are Wrong:** * **Transsphenoidal Resection:** This is reserved for patients who are resistant to or intolerant of dopamine agonists, or those with rapidly declining vision (pituitary apoplexy). It is not the first-line treatment. * **Stereotactic Radiosurgery/Radiotherapy:** These are third-line treatments used only for aggressive or malignant prolactinomas that fail both medical and surgical interventions. They carry a high risk of long-term hypopituitarism. **High-Yield Clinical Pearls for NEET-PG:** * **Drug of Choice:** **Cabergoline** is preferred over Bromocriptine due to higher efficacy and a better side-effect profile (twice-weekly dosing). * **Size Classification:** Microadenoma (<10 mm); Macroadenoma (>10 mm); Giant Prolactinoma (>40 mm). * **Hook Effect:** In cases of very high prolactin, laboratory assays may show falsely low levels; serial dilution is required for diagnosis. * **Pregnancy:** If a patient on treatment conceives, dopamine agonists are usually discontinued unless the tumor is a macroadenoma threatening the optic chiasm. Bromocriptine has the most safety data in pregnancy.

Question 244: Which is the most common organ affected in primary blast injury?

A. Lung
B. Ear (Correct Answer)
C. Skin
D. Bowel

Explanation: **Explanation:** Blast injuries are classified into four categories (Primary to Quaternary). **Primary blast injuries** are caused specifically by the **overpressure wave** (blast wave) interacting with the body. This wave most significantly affects **air-containing organs** and **air-fluid interfaces**, as these tissues are highly compressible and susceptible to shearing forces. * **Correct Answer (B) Ear:** The **tympanic membrane (TM)** is the most sensitive structure to pressure changes. It can rupture at pressures as low as 5–15 psi. Because it has the lowest threshold for damage, the ear is the **most common** organ affected in primary blast injury. * **Option (A) Lung:** While "Blast Lung" (pulmonary contusion/hemorrhage) is the **most common cause of death** among initial survivors of a blast, it requires higher pressures to occur than a TM rupture. * **Option (D) Bowel:** Gas-filled organs like the colon (especially the cecum) can suffer mural hemorrhage or perforation, but this is less common than ear or lung involvement. * **Option (C) Skin:** The skin is generally resilient to the overpressure wave itself; injuries to the skin are more common in secondary (shrapnel) or tertiary (displacement) blast phases. **High-Yield Clinical Pearls for NEET-PG:** 1. **Most common organ affected:** Ear (Tympanic membrane). 2. **Most common cause of death (Primary):** Blast Lung (look for the triad of apnea, bradycardia, and hypotension). 3. **Secondary Blast Injury:** Caused by flying debris/shrapnel (most common cause of overall casualties). 4. **Tertiary Blast Injury:** Caused by the victim being thrown against an object. 5. **Quaternary Blast Injury:** All other injuries (burns, toxic inhalation, crush syndrome).

Question 245: Which of the following is not a feature of a Le Fort II fracture?

A. Enophthalmos (Correct Answer)
B. Malocclusion
C. Paraesthesia
D. CSF rhinorrhea

Explanation: **Explanation:** Le Fort fractures are classic patterns of midface fractures involving the pterygoid plates. Understanding the anatomical lines of these fractures is crucial for NEET-PG. **Why Enophthalmos is the correct answer:** Enophthalmos (posterior displacement of the eyeball) is a hallmark feature of **Le Fort III fractures** (Craniofacial disjunction) or isolated **Orbital Blow-out fractures**. In a Le Fort II fracture, the orbital floor is involved, but the lateral orbital wall remains intact. Therefore, the orbital volume does not increase significantly enough to cause enophthalmos. **Analysis of Incorrect Options:** * **Malocclusion:** This is a common feature of all Le Fort fractures (I, II, and III) because the tooth-bearing segment of the maxilla is separated from the stable cranial base, leading to a "floating palate" and disrupted bite. * **Paraesthesia:** In Le Fort II (Pyramidal fracture), the fracture line passes through the **infraorbital foramen**. This frequently results in damage or compression of the infraorbital nerve, causing anesthesia or paraesthesia of the cheek and upper lip. * **CSF Rhinorrhea:** Since the fracture line in Le Fort II involves the ethmoid air cells and potentially the cribriform plate (at the nasofrontal suture), a dural tear can occur, leading to the leakage of cerebrospinal fluid through the nose. **High-Yield Clinical Pearls:** * **Le Fort I:** Horizontal fracture (Guerin's fracture); involves only the dentoalveolar segment. * **Le Fort II:** Pyramidal fracture; involves the nasal bones, maxillary sinus, and infraorbital rim. * **Le Fort III:** Craniofacial disjunction; involves the zygomatic arch and lateral orbital wall. * **Key Sign:** All Le Fort fractures must involve the **pterygoid plates** to be classified as such. * **Dish-face deformity:** Classically associated with Le Fort II and III due to the retrusion of the midface.

Question 246: A patient presents to the emergency department. On examination, they open their eyes only to painful stimuli, speak inappropriate words, and move their limbs on command. What is their Glasgow Coma Scale (GCS) score?

A. 11 (Correct Answer)
B. 10
C. 9
D. 13

Explanation: ### Explanation The **Glasgow Coma Scale (GCS)** is a clinical tool used to assess a patient's level of consciousness based on three parameters: Eye opening (E), Verbal response (V), and Motor response (M). The score ranges from a minimum of 3 to a maximum of 15. **Breakdown of the Patient’s Score:** 1. **Eye Opening (E):** The patient opens eyes only to painful stimuli. This corresponds to a score of **2**. (Spontaneous = 4, To speech = 3, To pain = 2, None = 1). 2. **Verbal Response (V):** The patient speaks inappropriate words (random or exclamatory words without sustained conversation). This corresponds to a score of **3**. (Oriented = 5, Confused = 4, Inappropriate words = 3, Incomprehensible sounds = 2, None = 1). 3. **Motor Response (M):** The patient moves limbs on command (obeys commands). This corresponds to a score of **6**. (Obeys commands = 6, Localizes pain = 5, Normal flexion/Withdrawal = 4, Abnormal flexion/Decorticate = 3, Extension/Decerebrate = 2, None = 1). **Total GCS = E2 + V3 + M6 = 11.** **Analysis of Incorrect Options:** * **Option B (10):** This would be the score if the patient only localized pain (M5) instead of obeying commands. * **Option C (9):** This would be the score if the patient also had incomprehensible sounds (V2) instead of words. * **Option D (13):** This indicates a milder impairment, usually seen if the patient was confused (V4) and opened eyes to speech (E3). **High-Yield Clinical Pearls for NEET-PG:** * **GCS ≤ 8** is the traditional definition of a **coma** and is an indication for **intubation** ("GCS of 8, intubate"). * **Motor response** is the most significant prognostic indicator among the three components. * If a patient is intubated, the verbal score is recorded as **"T"** (e.g., GCS 10T). * **Severity Classification:** 13–15 (Mild), 9–12 (Moderate), 3–8 (Severe head injury).

Question 247: What is the maximum possible score on the Glasgow Coma Scale (GCS)?

A. 12
B. 13
C. 14
D. 15 (Correct Answer)

Explanation: **Explanation:** The **Glasgow Coma Scale (GCS)** is a clinical tool used to objectively assess the level of consciousness in patients with head injuries or acute neurological insults. It evaluates three specific components of responsiveness: **Eye Opening (E), Verbal Response (V), and Motor Response (M).** The maximum score is **15**, calculated by adding the highest possible points in each category: * **Best Eye Response (E4):** Spontaneous eye-opening. * **Best Verbal Response (V5):** Oriented and converses. * **Best Motor Response (M6):** Obeys commands. * **Total:** 4 + 5 + 6 = **15**. **Analysis of Options:** * **Options A (12), B (13), and C (14):** These represent intermediate scores indicating varying degrees of neurological impairment. A score of 13–15 is classified as **Mild Head Injury**, 9–12 as **Moderate**, and 8 or less as **Severe**. None of these represent the ceiling of the scale. **Clinical Pearls for NEET-PG:** 1. **Minimum Score:** The lowest possible GCS score is **3** (E1V1M1), not zero. Even a brain-dead patient scores 3. 2. **Intubation:** If a patient is intubated, the verbal component cannot be assessed. The score is recorded with a "T" suffix (e.g., GCS 10T). 3. **The "8" Rule:** A GCS score of **≤ 8** is the classic indication for endotracheal intubation ("GCS of 8, intubate"). 4. **Motor Component:** The Motor score (M) is the most reliable predictor of clinical outcome. 5. **Modified GCS:** For children under 4 years, the **Paediatric Glasgow Coma Scale (PGCS)** is used to account for age-appropriate verbal and motor development.

Question 248: Mark the FALSE statement regarding head injury and brain hemorrhage?

A. Extradural hemorrhage occurs due to the rupture of the middle meningeal artery.
B. Lucid interval is exclusive to subdural hemorrhage. (Correct Answer)
C. Posterior communicating artery aneurysm can lead to a dilated pupil.
D. Hunt and Hess Scale is used for subarachnoid hemorrhage severity.

Explanation: **Explanation:** The correct answer is **B** because the statement is factually incorrect. The **lucid interval**—a period of consciousness between the initial impact and subsequent neurological deterioration—is a classic hallmark of **Extradural Hemorrhage (EDH)**, not Subdural Hemorrhage (SDH). While it can occasionally occur in other conditions, it is most characteristically associated with EDH due to the rapid expansion of an arterial bleed. **Analysis of Options:** * **Option A:** This is **true**. The middle meningeal artery (a branch of the maxillary artery) is the most common source of bleeding in EDH, usually following a fracture at the **pterion**. * **Option C:** This is **true**. An aneurysm of the **Posterior Communicating (P-com) artery** can compress the adjacent Oculomotor nerve (CN III). Since parasympathetic fibers are superficial, their compression leads to a fixed, dilated pupil (mydriasis). * **Option D:** This is **true**. The **Hunt and Hess Scale** (ranging from Grade 1 to 5) is the standard clinical grading system used to predict the severity and mortality risk in patients with Subarachnoid Hemorrhage (SAH). **High-Yield Clinical Pearls for NEET-PG:** * **EDH Shape:** Biconvex/Lens-shaped (Lentiform) on CT; does not cross suture lines. * **SDH Shape:** Crescent-shaped/Concave on CT; can cross suture lines but not dural attachments. * **SDH Source:** Tearing of cortical **bridging veins**; common in elderly and alcoholics. * **SAH Presentation:** "Worst headache of life" (Thunderclap headache); most common cause is a ruptured **Berry Aneurysm**.

Question 249: What is the correct algorithm for the initial stabilization of a severely injured patient?

A. Treating hard tissue injuries
B. Reducing facial bone fractures
C. Control of haemorrhage
D. Airway, breathing, and circulation (Correct Answer)

Explanation: **Explanation:** The management of a trauma patient follows the **ATLS (Advanced Trauma Life Support)** protocol, which prioritizes life-threatening conditions in a specific sequence. The correct algorithm is **ABCDE** (Airway, Breathing, Circulation, Disability, and Exposure). **1. Why Option D is Correct:** The fundamental principle of trauma care is to treat the "greatest threat to life" first. * **Airway (A):** Lack of oxygen kills the fastest (within minutes). Ensuring a patent airway with cervical spine protection is the first priority. * **Breathing (B):** Once the airway is clear, adequate ventilation and oxygenation must be confirmed (e.g., ruling out tension pneumothorax). * **Circulation (C):** This involves assessing perfusion and controlling external/internal hemorrhage to prevent irreversible shock. **2. Why Other Options are Incorrect:** * **Options A & B:** Treating hard tissue injuries and reducing facial bone fractures are part of the **Secondary Survey**. These are non-life-threatening injuries. Attempting to fix a fracture while a patient is in respiratory distress or hemorrhagic shock violates the basic tenets of trauma resuscitation. * **Option C:** While hemorrhage control is vital, it is traditionally the third step (Circulation). *Note:* In cases of "Exsanguinating" external hemorrhage, the sequence may shift to **C-A-B**, but for general initial stabilization as per standard algorithms, ABC remains the gold standard. **Clinical Pearls for NEET-PG:** * **The "Golden Hour":** The critical period where prompt intervention significantly reduces mortality. * **Cervical Spine:** Always assume a C-spine injury in any blunt trauma above the clavicle; maintain manual in-line stabilization during airway maneuvers. * **Definitive Airway:** A cuffed tube in the trachea (Endotracheal Intubation or Surgical Cricothyroidotomy). * **Lethal Triad of Trauma:** Acidosis, Coagulopathy, and Hypothermia.

Question 250: Which score on the Glasgow Coma Scale indicates a moderate head injury?

A. 3-8
B. Less than 3
C. 9-12 (Correct Answer)
D. Greater than 12

Explanation: The **Glasgow Coma Scale (GCS)** is the gold standard for assessing the level of consciousness and the severity of traumatic brain injury (TBI). It evaluates three parameters: Eye opening (E), Verbal response (V), and Motor response (M), with a total score ranging from 3 to 15. ### **Explanation of Options** * **Correct Answer (C) 9-12:** A GCS score between 9 and 12 is clinically classified as a **Moderate Head Injury**. Patients in this range are usually lethargic or stuporous and require urgent CT imaging and close observation, as they are at risk of secondary neurological deterioration. * **Option A (3-8):** This indicates a **Severe Head Injury**. A score of 8 or less is the threshold for "coma," and the standard clinical dictum is: *"GCS 8, Intubate."* * **Option B (Less than 3):** This is physiologically impossible. The minimum GCS score is 3 (E1, V1, M1), representing no response. * **Option D (Greater than 12):** A score of 13-15 is classified as a **Mild Head Injury** (or concussion). While most recover, they still require screening for "red flags." ### **High-Yield Clinical Pearls for NEET-PG** 1. **Components:** Eye (4), Verbal (5), Motor (6). Remember the mnemonic: **"EVM-456."** 2. **Motor Response:** This is the most significant prognostic indicator of the three components. 3. **GCS-P:** A newer variant that subtracts the **Pupillary response** score (0-2) from the total GCS to better predict mortality. 4. **Verbal Assessment in Intubated Patients:** If a patient is intubated, the verbal score is recorded as **'T'** (e.g., GCS 10T).

Practice by Chapter

Initial Assessment of Trauma Patient

Practice Questions

Advanced Trauma Life Support (ATLS) Principles

Practice Questions

Chest Trauma

Practice Questions

Abdominal Trauma

Practice Questions

Head Trauma

Practice Questions

Spinal Trauma

Practice Questions

Extremity Trauma

Practice Questions

Vascular Trauma

Practice Questions

Genitourinary Trauma

Practice Questions

Burns Management

Practice Questions

Mass Casualty Management

Practice Questions

Damage Control Surgery

Practice Questions

Want unlimited practice?

Get full access to all questions, explanations, and performance tracking.

Start For Free

Trauma — MCQs

Trauma — MCQs

On this page

Practice by Chapter

Want unlimited practice?