Trauma Practice Questions

Q: Which of the following medications is used in trauma patients to control bleeding?

Tranexamic acid. ### Explanation **Correct Answer: A. Tranexamic acid (TXA)** **Mechanism and Rationale:** In major trauma, the body often undergoes **hyperfibrinolysis**—a state where clots are broken down prematurely, leading to exsanguination. Tranexamic acid is an **antifibrinolytic** agent that works by competitively inhibiting the activation of plasminogen to plasmin. By blocking the lysine-binding sites on plasminogen, it prevents the degradation of fibrin, thereby stabilizing formed clots and reducing blood loss. **Analysis of Incorrect Options:** * **B. Haemocoagulase:** This is a mixture of enzymes (isolated from snake venom) used topically or in minor surgical oozing. It lacks robust clinical evidence for improving mortality in major polytrauma. * **C. Aprotinin:** A broad-spectrum serine protease inhibitor once used to reduce bleeding in cardiac surgery. It was largely withdrawn from the market due to concerns regarding increased risks of renal failure and mortality, and it is not the standard of care in trauma. * **D. Fondaparinux:** This is a synthetic **anticoagulant** (Factor Xa inhibitor). It is used for thromboprophylaxis or treating DVT/PE; administering it to a bleeding trauma patient would be contraindicated as it would worsen hemorrhage. **High-Yield Clinical Pearls for NEET-PG:** * **CRASH-2 Trial:** This landmark study established that TXA reduces mortality in trauma patients if administered within **3 hours** of injury. * **The "Golden 3 Hours":** Administration after 3 hours may actually increase the risk of death due to thrombotic complications or altered inflammatory responses. * **Dosing:** The standard protocol is a **1g loading dose** over 10 minutes, followed by a **1g maintenance infusion** over 8 hours. * **Indication:** Systolic BP 110 bpm (signs of hemorrhagic shock).

Q: In the ATLS 'AMPLE' history mnemonic, what does the letter 'L' stand for?

Last meal. In the management of trauma patients, the **AMPLE** history is a focused, secondary survey tool used to gather essential clinical information quickly. ### **Explanation of the Correct Answer** The letter **'L'** stands for **Last Meal** (or Last oral intake). This is critical in trauma management because it helps the surgical and anesthesia teams assess the **risk of aspiration**. If a patient requires emergency surgery, knowing the time of the last meal determines the necessity of a Rapid Sequence Induction (RSI) and the potential for gastric decompression via a nasogastric tube to prevent Mendelson’s syndrome (aspiration pneumonitis). ### **Analysis of Incorrect Options** * **B. Latest events:** While the events leading up to the trauma are important, they are represented by the letter **'E'** (Events/Environment related to the injury). * **C. Loss of consciousness:** This is assessed during the Primary Survey under **'D'** (Disability) using the GCS or AVPU scale, not the AMPLE history. * **D. Location of the event:** While relevant for mechanism of injury, it is not a specific component of this mnemonic. ### **Clinical Pearls for NEET-PG** The full **AMPLE** mnemonic is: * **A:** Allergies * **M:** Medications (especially anticoagulants like Warfarin or Clopidogrel) * **P:** Past medical history / Pregnancy * **L:** Last meal (Time of intake) * **E:** Events / Environment (Mechanism of injury) **High-Yield Note:** In trauma, every patient is traditionally considered to have a **"Full Stomach"** regardless of the 'L' history, necessitating precautions during intubation. However, the 'L' provides a baseline for the severity of that risk.

Q: What is the first investigation of choice in a patient presenting with blunt trauma to the abdomen in the emergency room?

FAST scan. **Explanation:** In the emergency management of blunt trauma abdomen (BTA), the primary goal is the rapid identification of life-threatening internal hemorrhage. **1. Why FAST scan is the correct answer:** **FAST (Focused Assessment with Sonography for Trauma)** is the investigation of choice in the emergency room because it is **rapid, non-invasive, bedside, and repeatable**. It is specifically designed to detect free intraperitoneal fluid (hemoperitoneum) in four areas: the Hepatorenal pouch (Morison’s pouch), Splenorenal space, Pelvis (Pouch of Douglas), and the Pericardium. Its high sensitivity in detecting as little as 100-200 ml of fluid makes it the gold standard for initial screening, especially in hemodynamically unstable patients. **2. Why other options are incorrect:** * **CT Scan:** While the "Gold Standard" for identifying specific organ injuries (e.g., Grade III splenic tear), it requires the patient to be **hemodynamically stable**. It is time-consuming and requires transporting the patient away from the resuscitation bay. * **MRI:** It has no role in acute trauma management due to long scan times and incompatibility with resuscitation equipment. * **X-ray Abdomen:** It is insensitive for detecting hemoperitoneum or solid organ injury. Its primary use is limited to detecting pneumoperitoneum (hollow viscus perforation), but it is not the *first* investigation. **Clinical Pearls for NEET-PG:** * **E-FAST:** An "Extended" FAST includes views of the thorax to rule out PTX (Pneumothorax) and Hemothorax. * **Hemodynamically Unstable + Positive FAST** = Immediate Laparotomy. * **Hemodynamically Stable + Positive FAST** = Proceed to CECT Abdomen to grade the injury. * **DPL (Diagnostic Peritoneal Lavage):** Used if FAST is unavailable or inconclusive in an unstable patient; however, it is invasive and less preferred today.

Q: A middle third facial fracture (Le Fort fracture) is characterized by all of the following EXCEPT:

Proptosis. **Explanation:** Le Fort fractures involve the separation of the midface from the skull base. The correct answer is **Proptosis** because Le Fort fractures typically result in **Enophthalmos** (recession of the eyeball), not proptosis (protrusion). **Why Proptosis is the Correct Answer (The "Except"):** In midface trauma, the orbital floor or walls are often fractured, leading to an increase in orbital volume. This causes the orbital contents (fat and globe) to sag or herniate into the maxillary sinus, resulting in **Enophthalmos**. Proptosis is more characteristic of retrobulbar hemorrhage or orbital tumors, which increase pressure behind the globe. **Analysis of Other Options:** * **Lengthening of the face:** This is a hallmark of Le Fort II and III fractures. The separation of the midfacial skeleton from the cranium causes the facial bones to displace downwards and backwards due to gravity and the pull of the pterygoid muscles. * **Enophthalmos:** As explained, the disruption of the orbital integrity leads to a "sunken" appearance of the eye. * **Ecchymosis:** Extensive bruising is universal in facial fractures. Specifically, **"Panda eyes"** (periorbital ecchymosis) are common in Le Fort II and III fractures. **High-Yield Clinical Pearls for NEET-PG:** * **Le Fort I (Guerin’s fracture):** Low level; separates the alveolar process from the maxilla ("Floating palate"). * **Le Fort II (Pyramidal):** Involves the nasal bones and infraorbital rim. * **Le Fort III (Craniofacial dysjunction):** The entire midface is separated from the skull base; involves the zygomatic arch. * **Dish-face deformity:** A classic description of the flattened, lengthened facial profile seen in Le Fort II and III fractures. * **CSF Rhinorrhea:** Most common in Le Fort II and III due to cribriform plate involvement.

Q: What is the first step in the management of blunt abdominal trauma?

Focused assessment with sonography for trauma (FAST). **Explanation:** The management of blunt abdominal trauma (BAT) follows the **ATLS (Advanced Trauma Life Support)** protocol. Once the primary survey (ABCDE) is initiated, the immediate goal is to identify life-threatening intra-abdominal hemorrhage. **Why FAST is the Correct Answer:** **Focused Assessment with Sonography for Trauma (FAST)** is the initial investigation of choice because it is rapid, non-invasive, bedside, and repeatable. It specifically looks for free fluid (blood) in four dependent areas: the Morison pouch (RUQ), perisplenic space (LUQ), pelvis, and pericardium. In a hemodynamically unstable patient, a positive FAST indicates the need for immediate laparotomy. **Analysis of Incorrect Options:** * **Diagnostic Peritoneal Lavage (DPL):** While highly sensitive for detecting blood, it is invasive and has been largely replaced by FAST. It is now reserved for cases where FAST is inconclusive or unavailable in hemodynamically unstable patients. * **Contrast-Enhanced CT (CECT):** This is the **gold standard** for identifying the specific organ injury and grading its severity. However, it is only performed in **hemodynamically stable** patients because it requires transporting the patient away from the resuscitation area. * **X-ray Abdomen Erect:** This has limited utility in acute trauma. While it may show pneumoperitoneum (hollow viscus perforation), it cannot detect hemoperitoneum and delays definitive management. **High-Yield Clinical Pearls for NEET-PG:** * **Hemodynamically Unstable + Positive FAST:** Proceed to Emergency Laparotomy. * **Hemodynamically Stable + Positive FAST:** Proceed to CECT to grade the injury. * **E-FAST:** An "Extended" FAST includes views of the thorax to rule out PTX (Pneumothorax) and Hemothorax. * **Most common organ injured in BAT:** Spleen (followed by Liver).

Q: Craniofacial dissociation is seen in which type of fracture?

Le Fort 3 fracture. **Explanation:** **Le Fort III fracture**, also known as **Craniofacial Dissociation**, is the correct answer because it involves a complete separation of the facial skeleton from the cranial base. The fracture line passes through the nasofrontal suture, the maxillofrontal suture, the orbital floor, and the zygomaticofrontal suture, extending through the zygomatic arches. This results in the entire midface becoming mobile and "detached" from the skull. **Analysis of Incorrect Options:** * **Le Fort I (Guerin’s fracture):** This is a horizontal maxillary fracture above the level of the teeth. It results in a **"floating palate"** but does not involve the orbits or the cranial base. * **Le Fort II (Pyramidal fracture):** This fracture has a triangular shape, involving the nasal bones and the infraorbital rim. It results in a **"floating maxilla"** but the zygomatic bones remain attached to the cranium. * **Tripod Fracture (Zygomaticomaxillary Complex Fracture):** This involves three points of the zygoma (frontal, maxillary, and temporal processes). While it causes significant malar flattening, it is a localized lateral midface injury and does not cause global dissociation of the face from the skull. **High-Yield Clinical Pearls for NEET-PG:** * **Le Fort III** is frequently associated with **CSF rhinorrhea** due to involvement of the ethmoid bone and cribriform plate. * **Dish-face deformity:** A classic clinical sign of Le Fort II and III fractures where the midface appears sunken or concave. * **Lengthening of the face:** Often seen in Le Fort II and III due to the downward displacement of the fractured segments. * **Pterygoid plates:** Involvement of the pterygoid plates is a mandatory feature for a fracture to be classified as any Le Fort type (I, II, or III).

Q: In splenic injury, conservation management is indicated in which of the following scenarios?

Young patient. **Explanation:** Splenic conservation (Non-Operative Management or NOM) is the current gold standard for hemodynamically stable patients with blunt splenic trauma. **Why "Young patient" is correct:** Age is a significant factor in the success of conservative management. Children and young adults have a more robust splenic capsule and more efficient intraparenchymal vessel contraction compared to the elderly. In pediatric populations, the success rate of NOM exceeds 90%. Preserving the spleen in young patients is prioritized to avoid **Overwhelming Post-Splenectomy Infection (OPSI)**, a life-threatening risk caused by encapsulated organisms (e.g., *S. pneumoniae*). **Why other options are incorrect:** * **A & D (Hemodynamically unstable/Hypotension):** Hemodynamic instability is the **absolute contraindication** to conservative management. Patients with persistent hypotension, tachycardia, or extreme pallor despite fluid resuscitation require immediate laparotomy. * **C (Shattered spleen):** A "shattered spleen" (Grade V injury) involves complete devascularization or maceration. These high-grade injuries usually lead to massive hemoperitoneum and instability, typically necessitating a splenectomy rather than conservation. **High-Yield Clinical Pearls for NEET-PG:** * **Most common organ injured** in blunt trauma abdomen: Spleen. * **Prerequisite for NOM:** Hemodynamic stability and absence of other hollow viscus injuries requiring surgery. * **Investigation of Choice:** CECT Abdomen (to grade the injury and check for "contrast blush"). * **Kehr’s Sign:** Referred pain to the left shoulder due to diaphragmatic irritation (classic for splenic rupture). * **Vaccination:** If splenectomy is performed, vaccinate against *S. pneumoniae, H. influenzae,* and *N. meningitidis* (ideally 14 days post-op).

Q: Neurogenic shock is characterized by:

Hypotension and bradycardia. **Explanation:** Neurogenic shock occurs due to the loss of sympathetic vascular tone and the loss of compensatory autonomic responses, typically following a high spinal cord injury (above T6). **1. Why Option D is Correct:** The pathophysiology involves a "double hit" to the autonomic nervous system: * **Hypotension:** Loss of sympathetic outflow leads to massive peripheral vasodilation and decreased systemic vascular resistance (SVR), causing blood to pool in the extremities. * **Bradycardia:** The sympathetic fibers to the heart (T1–T4) are disrupted, leaving the **vagal (parasympathetic) tone unopposed**. Unlike other forms of shock where the heart rate rises to compensate for low blood pressure, in neurogenic shock, the heart cannot mount a tachycardic response. **2. Why Other Options are Incorrect:** * **Options A & B:** Hypertension is not a feature of any distributive shock. While a brief hypertensive surge can occur at the moment of injury (autonomic dysreflexia in later stages), the hallmark of the *shock phase* is hypotension. * **Option C:** Hypotension and tachycardia are the classic signs of **Hypovolemic Shock**. In trauma, if a patient has hypotension and tachycardia, you must rule out hemorrhage first. **3. Clinical Pearls for NEET-PG:** * **The "Warm Shock":** Unlike hypovolemic shock (cold/clammy skin), neurogenic shock presents with **warm, dry skin** due to vasodilation. * **Level of Injury:** Usually seen in cervical or high thoracic cord injuries (above T6). * **Management:** Initial treatment involves aggressive fluid resuscitation followed by vasopressors (e.g., Norepinephrine or Phenylephrine) and sometimes Atropine for severe bradycardia. * **Spinal vs. Neurogenic Shock:** Do not confuse the two. Spinal shock refers to the loss of *reflexes* and flaccidity after injury, while neurogenic shock refers to the *hemodynamic* instability.

Question 1

Which of the following medications is used in trauma patients to control bleeding?

Accepted Answer

Tranexamic acid

Answer

Haemocoagulase

Answer

Aprotinin

Answer

Fondaparinux

Question 2

In the ATLS 'AMPLE' history mnemonic, what does the letter 'L' stand for?

Accepted Answer

Last meal

Answer

Latest events

Answer

Loss of consciousness

Answer

Location of the event

Question 3

What is the first investigation of choice in a patient presenting with blunt trauma to the abdomen in the emergency room?

Accepted Answer

FAST scan

Answer

CT scan

Answer

MRI

Answer

X-ray abdomen

Question 4

A middle third facial fracture (Le Fort fracture) is characterized by all of the following EXCEPT:

Accepted Answer

Proptosis

Answer

Lengthening of the face

Answer

Enophthalmos

Answer

Ecchymosis

Question 5

What is the first step in the management of blunt abdominal trauma?

Accepted Answer

Focused assessment with sonography for trauma (FAST)

Answer

Diagnostic peritoneal lavage (DPL)

Answer

Contrast-enhanced computed tomography (CECT)

Answer

X-ray abdomen erect

Question 6

Craniofacial dissociation is seen in which type of fracture?

Accepted Answer

Le Fort 3 fracture

Answer

Le Fort 1 fracture

Answer

Le Fort 2 fracture

Answer

Tripod fracture

Question 7

In splenic injury, conservation management is indicated in which of the following scenarios?

Accepted Answer

Young patient

Answer

Hemodynamically unstable patient

Answer

Shattered spleen

Answer

Extreme pallor and hypotension

Question 8

Neurogenic shock is characterized by:

Accepted Answer

Hypotension and bradycardia

Answer

Hypertension and tachycardia

Answer

Hypertension and bradycardia

Answer

Hypotension and tachycardia

Question 9

Which of the following can cause complications with treatment of mandibular fracture?

Accepted Answer

Compression plate

Answer

Miniplate

Answer

Intermaxillary fixation (IMF)

Answer

Reconstruction plate

Question 10

What is the most likely cause of excessive bleeding during hemothorax?

Accepted Answer

Major artery

Answer

Venacava

Answer

Hepatic artery

Answer

Internal mammary artery

Trauma — MCQs

Trauma — MCQs

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