Trauma — MCQs

Trauma Indian Medical PG Practice Questions and MCQs

Question 21: What is the most useful incision in the operating room for patients with penetrating pericardium injury?

A. Left anterior thoracotomy
B. Right anterior thoracotomy
C. Subxyphoid
D. Median sternotomy (Correct Answer)

Explanation: **Explanation:** The management of penetrating pericardial/cardiac injury depends on the patient's hemodynamic stability and the clinical setting. **Why Median Sternotomy is Correct:** In the **Operating Room (OR)**, median sternotomy is the gold standard incision for penetrating cardiac trauma. It provides the **best anatomical exposure** to the entire heart (right ventricle, right atrium, and left ventricle), the great vessels (aorta, vena cava), and the pulmonary hilum. Since the right ventricle is the most commonly injured chamber in penetrating trauma due to its anterior position, a sternotomy allows for rapid access and definitive repair under controlled conditions. **Why Other Options are Incorrect:** * **Left Anterior Thoracotomy:** This is the incision of choice for **Emergency Department (ED) Thoracotomy** (Resuscitative Thoracotomy) in a crashing patient with cardiac arrest. While it allows access to the left ventricle and allows for "clamping the aorta," it provides poor exposure to the right-sided chambers and the great vessels compared to a sternotomy. * **Right Anterior Thoracotomy:** Only used if the injury is specifically localized to the right chest or for access to the azygos vein and esophagus; it is not standard for pericardial injuries. * **Subxyphoid Incision:** This is primarily used for a **Pericardial Window** to diagnose the presence of blood in the pericardium (hemopericardium) in hemodynamically stable patients. It is a diagnostic tool, not a therapeutic incision for repairing cardiac injuries. **NEET-PG High-Yield Pearls:** * **Most common chamber injured:** Right Ventricle (due to its anterior location). * **Beck’s Triad (Cardiac Tamponade):** Hypotension, Muffled heart sounds, and Distended neck veins (JVP). * **Choice of Incision:** If the patient is in the **OR**, choose **Median Sternotomy**. If the patient is "crashing" in the **ER**, choose **Left Anterolateral Thoracotomy** (4th/5th intercostal space). * **FAST Exam:** The pericardial view is the most sensitive non-invasive test for detecting tamponade in trauma.

Question 22: What is the fluid of choice given immediately in hemorrhagic shock?

A. Packed RBC
B. Colloids
C. Crystalloids (Correct Answer)
D. Isotonic fluids

Explanation: **Explanation:** In the initial management of hemorrhagic shock, the primary goal is rapid restoration of intravascular volume to maintain organ perfusion. **Crystalloids** (specifically Isotonic Crystalloids like Normal Saline or Ringer’s Lactate) are the fluid of choice for immediate resuscitation. **Why Crystalloids?** According to ATLS guidelines, crystalloids are the first-line treatment because they are readily available, inexpensive, and effectively expand the intravascular space. While they eventually equilibrate into the interstitial space, they provide the necessary immediate volume expansion to stabilize hemodynamics while cross-matching for blood is underway. **Analysis of Other Options:** * **Packed RBCs (A):** While essential for definitive management of Class III and IV shock, they are not the *immediate* first step unless the patient presents with exsanguinating hemorrhage. Blood requires cross-matching (which takes time), whereas crystalloids can be started instantly. * **Colloids (B):** These are generally avoided in trauma. They are expensive, can cause coagulopathy, and have not shown any survival benefit over crystalloids in acute resuscitation. * **Isotonic fluids (D):** While technically correct (as RL and NS are isotonic), "Crystalloids" is the more specific and standard medical term used in trauma protocols and exam keys. **High-Yield Clinical Pearls for NEET-PG:** * **Fluid of Choice:** Ringer’s Lactate (RL) is often preferred over Normal Saline to avoid hyperchloremic metabolic acidosis. * **The "1-Litre Rule":** ATLS 10th edition recommends an initial bolus of **1 Litre** of warmed isotonic crystalloid for adults. * **Permissive Hypotension:** In non-compressible torso trauma, avoid over-resuscitation; maintain a Mean Arterial Pressure (MAP) of ~65 mmHg to prevent "popping the clot." * **Lethal Triad of Trauma:** Acidosis, Coagulopathy, and Hypothermia. Always use warmed fluids.

Question 23: Which is the best fluid for resuscitation during a shock state?

A. Crystalloids (Correct Answer)
B. Colloids
C. Plasma substitutes
D. 5% dextrose

Explanation: **Explanation:** In the initial management of hemorrhagic or hypovolemic shock, **Crystalloids** (specifically Isotonic solutions like Ringer’s Lactate or Normal Saline) are the fluids of choice. According to ATLS guidelines, the primary goal is rapid volume expansion. Crystalloids are preferred because they are inexpensive, non-allergenic, and effectively restore intravascular volume and interstitial deficits. **Ringer’s Lactate (RL)** is often considered superior to Normal Saline as its composition closely mimics plasma and it avoids the risk of hyperchloremic metabolic acidosis. **Why other options are incorrect:** * **Colloids:** While they stay in the intravascular space longer, they are expensive, can cause coagulopathy, and have not shown a survival benefit over crystalloids in trauma patients. * **Plasma substitutes:** These (like Dextran or Hydroxyethyl starch) carry risks of anaphylaxis and acute kidney injury (AKI). They are generally avoided in acute resuscitation. * **5% Dextrose:** This is a hypotonic solution once glucose is metabolized. It rapidly leaves the intravascular space and enters the intracellular compartment, making it ineffective for volume expansion and potentially causing cerebral edema. **High-Yield Clinical Pearls for NEET-PG:** * **Fluid of Choice:** Ringer’s Lactate (RL) is the best initial fluid for trauma. * **The 3:1 Rule:** For every 1 mL of blood lost, 3 mL of crystalloid is required (due to equilibration with the interstitium). * **Permissive Hypotension:** In "uncontrolled" hemorrhage, aim for a lower-than-normal BP (MAP ~65 mmHg) to prevent "popping the clot" until surgical control is achieved. * **Massive Transfusion:** If a patient remains unstable after 1-2 liters of crystalloids, switch to blood products (1:1:1 ratio of PRBC, FFP, and Platelets).

Question 24: A 17-year-old girl presents with a history of generalized abdominal pain, fever, and recurrent vomiting. On examination, she has a temperature of 103°F, right iliac fossa tenderness, and a WBC count of 19,600/mm³.

A. Ruptured appendicular abscess (Correct Answer)
B. Torsion of ovarian cyst
C. Ruptured ectopic pregnancy
D. Intussusception

Explanation: ### Explanation **Correct Answer: A. Ruptured appendicular abscess** The clinical presentation of high-grade fever (103°F), significant leukocytosis (19,600/mm³), and localized right iliac fossa (RIF) tenderness strongly suggests an advanced inflammatory process. While acute appendicitis typically presents with lower-grade fever, a temperature of 103°F combined with generalized abdominal pain (peritonitis) and recurrent vomiting indicates a complication, specifically a **ruptured appendicular abscess**. When an abscess ruptures, the localized infection spreads, leading to systemic toxicity and generalized peritonism. **Why the other options are incorrect:** * **Torsion of ovarian cyst:** While this causes sudden, severe RIF pain and vomiting, it rarely presents with such high-grade fever or extreme leukocytosis unless the cyst has become necrotic or gangrenous over a prolonged period. * **Ruptured ectopic pregnancy:** This is a surgical emergency characterized by sudden onset pain and **hemodynamic instability** (hypovolemic shock). Fever and high WBC counts are not primary features; the patient would typically have a history of amenorrhea and a positive β-hCG. * **Intussusception:** This is more common in infants (6–18 months). In a 17-year-old, it is rare and usually secondary to a lead point (like a polyp or Meckel’s). It presents with colicky pain and "red currant jelly" stools rather than high-grade fever and RIF tenderness. **Clinical Pearls for NEET-PG:** * **Murphy’s Triad** for Appendicitis: Pain followed by vomiting and then fever. * **Appendicular Mass vs. Abscess:** A mass (phlegmon) usually appears 3–5 days after the onset of symptoms. If the patient’s condition deteriorates with a spiking fever and rigors, suspect abscess formation. * **Management:** A ruptured abscess with generalized peritonitis requires emergency laparotomy/laparoscopy, peritoneal lavage, and appendectomy. If the abscess is localized and stable, ultrasound-guided drainage is preferred.

Question 25: In a patient presenting with abdominal trauma, a fractured rib, and a bruise over the left hypochondrium, what is the probable diagnosis?

A. Rupture of the left lobe of the liver
B. Rupture of the right lobe of the liver
C. Splenic rupture (Correct Answer)
D. Rupture of the stomach

Explanation: ### Explanation **Correct Answer: C. Splenic rupture** The clinical triad of **abdominal trauma**, a **bruise over the left hypochondrium**, and a **fractured lower rib** (specifically the 9th, 10th, or 11th ribs) is a classic presentation for **Splenic Rupture**. The spleen is the most commonly injured organ in blunt abdominal trauma. Its anatomical location directly beneath the left diaphragm makes it highly susceptible to injury from direct impact or rib fragments on the left side. **Analysis of Incorrect Options:** * **A & B (Liver Rupture):** The liver is located in the **right hypochondrium**. While the left lobe can extend toward the midline, a bruise and rib fracture specifically on the *left* side point overwhelmingly toward the spleen. Liver injury would typically present with right-sided pain and right lower rib fractures. * **D (Rupture of the Stomach):** While the stomach is on the left, it is a hollow viscus and is less commonly injured in blunt trauma compared to solid organs like the spleen. Stomach rupture usually presents with signs of peritonitis (due to gastric acid leakage) rather than the localized signs of solid organ hemorrhage described. **NEET-PG High-Yield Pearls:** * **Kehr’s Sign:** Referred pain to the left shoulder due to diaphragmatic irritation by splenic blood (classic for splenic rupture). * **Ballance’s Sign:** Fixed dullness to percussion in the left flank and shifting dullness in the right flank. * **Investigation of Choice:** **CECT Abdomen** is the gold standard for stable patients; **FAST** (Focused Assessment with Sonography for Trauma) is used for unstable patients. * **Overtwhelming Post-Splenectomy Infection (OPSI):** The most feared long-term complication; caused primarily by encapsulated organisms (*S. pneumoniae, H. influenzae, N. meningitidis*).

Question 26: A patient presents with sudden headache, vomiting, and unconsciousness. What is the most likely diagnosis?

A. Subarachnoid hemorrhage (Correct Answer)
B. Intracerebral hemorrhage
C. Subdural hemorrhage
D. Extradural hemorrhage

Explanation: ### Explanation The clinical triad of **sudden-onset "thunderclap" headache**, vomiting, and rapid deterioration of consciousness is the classic presentation of a **Subarachnoid Hemorrhage (SAH)**. **1. Why Subarachnoid Hemorrhage (SAH) is correct:** SAH most commonly results from the rupture of a berry aneurysm (spontaneous) or trauma. The sudden release of blood into the subarachnoid space causes an immediate, massive increase in intracranial pressure, leading to the "worst headache of one's life." The meningeal irritation from the blood triggers vomiting and can lead to a rapid loss of consciousness. **2. Why the other options are incorrect:** * **Intracerebral Hemorrhage (ICH):** While it presents with headache and vomiting, it usually presents with **focal neurological deficits** (like hemiplegia) depending on the site of the bleed (e.g., putamen). * **Subdural Hemorrhage (SDH):** Typically follows a more **gradual or subacute** course (especially in elderly patients) following minor trauma. It results from the tearing of bridging veins. * **Extradural Hemorrhage (EDH):** Characterized by a history of head trauma (often at the pterion) and the classic **"Lucid Interval"**—a period of consciousness between the initial injury and subsequent deterioration. **3. NEET-PG High-Yield Pearls:** * **Gold Standard Investigation:** Non-contrast CT (NCCT) Head (shows blood in the Sylvian fissure/cisterns). * **Most Sensitive Investigation:** Lumbar Puncture (if CT is negative), looking for **xanthochromia**. * **Most Common Cause:** Trauma (overall); Ruptured Berry Aneurysm (spontaneous). * **Most Common Site of Aneurysm:** Junction of Anterior Communicating Artery and Anterior Cerebral Artery. * **Complication to Watch:** Vasospasm (prevented with **Nimodipine**).

Question 27: What is true about fat embolism?

A. Seen one week after injury
B. Petechiae (Correct Answer)
C. Bradycardia
D. All of the above

Explanation: **Fat Embolism Syndrome (FES)** is a clinical diagnosis typically occurring after long bone fractures (especially the femur and tibia) or pelvic fractures. It results from the release of fat globules from the bone marrow into the systemic circulation, leading to mechanical obstruction and a secondary inflammatory response. ### **Explanation of Options** * **B. Petechiae (Correct):** This is a hallmark clinical sign of FES, occurring in about 20–50% of cases. These non-palpable, reddish-brown spots typically appear on the **conjunctiva, neck, and axilla**. They result from the occlusion of dermal capillaries by fat globules and subsequent fragility. * **A. Seen one week after injury:** Incorrect. FES is characterized by a "latent period." Symptoms typically manifest **24 to 72 hours** after the initial trauma, not a week later. * **C. Bradycardia:** Incorrect. FES typically presents with **tachycardia** (heart rate >110 bpm) as a compensatory response to hypoxia and systemic inflammatory response syndrome (SIRS). ### **High-Yield Clinical Pearls for NEET-PG** * **Gurd’s Criteria:** Diagnosis is often based on Gurd’s major and minor criteria. * **Major Criteria:** Respiratory insufficiency (hypoxia), Cerebral involvement (confusion/coma), and **Petechial rash**. * **Minor Criteria:** Tachycardia, Pyrexia, Retinal changes (fat in fundus), and Jaundice. * **Snowstorm Appearance:** Chest X-ray may show diffuse bilateral pulmonary infiltrates (resembling ARDS). * **Management:** The mainstay of treatment is **supportive care** (oxygenation and hydration). Early stabilization/fixation of fractures is the most effective preventive measure. * **Free Fatty Acids:** The chemical theory suggests that circulating free fatty acids (FFAs) are directly toxic to pneumocytes, leading to ARDS.

Question 28: What is the Glasgow Coma Scale (GCS) score for a patient with mild head injury?

A. 15 with no loss of consciousness
B. 14 or 15 with some loss of consciousness (Correct Answer)
C. 13
D. 8

Explanation: The classification of Head Injury severity is a high-yield topic for NEET-PG, primarily based on the **Glasgow Coma Scale (GCS)** score assessed after initial resuscitation. ### **Explanation of the Correct Answer** **Option B** is correct because a **Mild Head Injury** is clinically defined by a GCS score of **14 or 15**. While a score of 15 can occur without any symptoms, the clinical definition of "injury" usually implies a mechanism of trauma resulting in a brief loss of consciousness (LOC), post-traumatic amnesia, or disorientation. According to ATLS guidelines, patients with GCS 14-15 are categorized as "Mild," though they still require observation to rule out intracranial hematomas. ### **Analysis of Incorrect Options** * **Option A:** While a GCS of 15 is "mild," the absence of any loss of consciousness or neurological symptoms often classifies the event as a minor head trauma rather than a clinical "mild head injury" requiring standard trauma protocols. * **Option C:** A GCS of **9 to 13** is classified as a **Moderate Head Injury**. These patients require urgent CT imaging and close monitoring as they have a higher risk of deterioration. * **Option D:** A GCS of **8 or less** is the definition of a **Severe Head Injury**. The clinical pearl here is: *"GCS 8, Intubate"*—these patients require definitive airway protection. ### **High-Yield Clinical Pearls for NEET-PG** * **GCS Components:** Remember **E4 V5 M6** (Eyes, Verbal, Motor). * **Minimum/Maximum Score:** The lowest possible GCS is **3** (not 0), and the highest is **15**. * **Motor Response:** This is the most significant prognostic indicator among the three components. * **CT Indications (Canadian CT Head Rule):** In mild head injury, a CT is indicated if there is a GCS <15 two hours post-injury, suspected skull fracture, >2 episodes of vomiting, or age >65.

Question 29: The Monro-kellie doctrine is primarily related to injuries of which body region?

A. Head (Correct Answer)
B. Abdomen
C. Chest
D. Leg

Explanation: ### Explanation **1. Why the Correct Answer is Right (Head):** The **Monro-Kellie Doctrine** (or hypothesis) is a fundamental concept in neurosurgery and trauma. It states that the cranial vault is a **rigid, non-expandable container** filled with three incompressible components: * **Brain parenchyma** (~80%) * **Cerebrospinal fluid (CSF)** (~10%) * **Blood** (~10%) Because the total volume must remain constant, an increase in one component (e.g., an intracranial hematoma or cerebral edema) must be compensated by a decrease in the others. Once compensatory mechanisms (like CSF shunting to the spinal canal) are exhausted, even a small increase in volume leads to a rapid rise in **Intracranial Pressure (ICP)**, potentially causing brain herniation. **2. Why the Incorrect Options are Wrong:** * **Abdomen (B):** While the abdomen can experience Compartment Syndrome, it is a distensible cavity (unlike the skull). The relevant doctrine here is related to Intra-abdominal Hypertension (IAH). * **Chest (C):** The thoracic cavity is flexible due to the ribs and diaphragm. Pressure changes here relate to tension pneumothorax or cardiac tamponade, but the rigid-box principle of Monro-Kellie does not apply. * **Leg (D):** Injuries to the leg are associated with **Compartment Syndrome**, but the fascia is more compliant than bone, and the physiology differs from the fixed-volume intracranial environment. **3. NEET-PG High-Yield Clinical Pearls:** * **First Compensatory Mechanism:** Displacement of CSF into the spinal subarachnoid space. * **Second Compensatory Mechanism:** Venous blood volume reduction (compression of cerebral veins/dural sinuses). * **Cushing’s Triad:** A late sign of increased ICP (Hypertension, Bradycardia, and Irregular Respiration). * **Normal ICP:** 5–15 mmHg. Treatment is usually initiated when ICP exceeds 20–22 mmHg.

Question 30: The modified Glasgow coma scale defines neurologic impairment in terms of:

A. Pupillary size, level of consciousness, and motor function
B. Speech, cardiovascular status, and consciousness
C. Sensory, motor function, and speech
D. Eye opening, best verbal response, and motor function (Correct Answer)

Explanation: The **Glasgow Coma Scale (GCS)** is the gold standard clinical tool used to assess the level of consciousness and the severity of neurological injury in trauma patients. It was developed by Teasdale and Jennett in 1974. ### **Explanation of the Correct Answer** The GCS evaluates three specific categories of neurological responses, often remembered by the mnemonic **EVM**: 1. **Eye Opening (E):** Scored 1 to 4. 2. **Verbal Response (V):** Scored 1 to 5. 3. **Motor Response (M):** Scored 1 to 6. The total score ranges from a **minimum of 3** (deep coma or death) to a **maximum of 15** (fully awake and oriented). Option D is correct because it accurately lists these three objective parameters. ### **Why Other Options are Incorrect** * **Option A:** While pupillary size and light reflex are vital in a neurological exam (often used in the "GCS-P" score), they are not part of the standard GCS components. * **Option B:** Cardiovascular status (BP, heart rate) is part of the Revised Trauma Score (RTS) but not the GCS. * **Option C:** Sensory function is not assessed in GCS; the scale focuses on the efferent (motor/verbal) output as a measure of cortical and brainstem integrity. ### **High-Yield Clinical Pearls for NEET-PG** * **Head Injury Classification:** * Mild: GCS 13–15 * Moderate: GCS 9–12 * Severe: GCS ≤ 8 (**"GCS of 8, Intubate!"**) * **Motor Response:** This is the most significant prognostic indicator among the three components. * **Modified GCS for Pediatrics:** Uses "grimace" and "crying" instead of standard verbal responses for infants. * **GCS-P:** A newer version that subtracts points for non-reactive pupils (Pupil Reactivity Score) to improve prognostic accuracy.

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?