Trauma Practice Questions

Q: Which of the following is/are true about a Le Fort fracture?

May cause CSF rhinorrhea. **Explanation:** Le Fort fractures are classic patterns of midface fractures involving the **pterygoid plates**, which are essential for the diagnosis. **1. Why Option B is correct:** Le Fort II and III fractures involve the **ethmoid bone and the cribriform plate**. Damage to these structures can cause a tear in the underlying dura mater, leading to the leakage of cerebrospinal fluid through the nose (**CSF rhinorrhea**). This is a critical clinical sign indicating a communication between the subarachnoid space and the nasal cavity. **2. Why other options are incorrect:** * **Option A:** Le Fort fractures primarily involve the **maxilla** and its surrounding structures, not the zygomatic bone in isolation. A fracture of the zygomatic bone is typically termed a "Tripod fracture" or Zygomaticomaxillary Complex (ZMC) fracture. * **Option C:** This description refers to **Le Fort III** (Craniofacial disjunction). **Le Fort I** is a horizontal fracture through the maxilla above the level of the teeth (Guerin’s fracture), separating the alveolar process from the rest of the face. * **Option D:** The Le Fort classification consists of only **three types** (I, II, and III). There are no types 4 or 5 in the standard classification. **High-Yield Clinical Pearls for NEET-PG:** * **Le Fort I:** Floating palate (Horizontal fracture). * **Le Fort II:** Pyramidal fracture; involves the infraorbital rim. * **Le Fort III:** Craniofacial disjunction; involves the zygomatic arch. * **Key Diagnostic Feature:** All Le Fort fractures must involve the **pterygoid plates** of the sphenoid bone. * **Management:** Airway management is the priority, as midface fractures can cause posterior displacement of the maxilla, obstructing the oropharynx. Nasogastric tubes are **contraindicated** if a cribriform plate fracture (Le Fort II/III) is suspected.

Q: "Seat belt syndrome" is characterized by which of the following?

Sudden deceleration injury leading to a torn mesentery. **Explanation:** **Seat belt syndrome** refers to a specific pattern of injuries sustained by occupants of a motor vehicle who are wearing a lap-style seat belt during a high-velocity **sudden deceleration** accident. **Why Option B is Correct:** The mechanism involves two main forces: **compression** and **hyperflexion** over the lap belt. As the body is thrown forward, the belt acts as a fulcrum. This leads to: 1. **Hollow Viscus Injury:** The most common is a **torn mesentery** or perforation of the small bowel (usually the proximal jejunum or distal ileum) due to sudden increases in intraluminal pressure. 2. **Chance Fracture:** A horizontal distraction fracture of the thoracolumbar spine (typically L1-L3). 3. **Abdominal Wall Ecchymosis:** The "seat belt sign" on the skin is a high-yield clinical predictor of internal injury. **Why the Other Options are Incorrect:** * **Option A:** Fracture of the ilium and urethral rupture are associated with lateral compression or anteroposterior pelvic ring injuries, not typically the seat belt mechanism. * **Option C:** Femur fractures and testicular swelling are unrelated to the specific fulcrum-effect of a lap belt. * **Option D:** Mesenteric adenitis is an inflammatory/infectious condition (often mimicking appendicitis) and is not a traumatic finding. **High-Yield Clinical Pearls for NEET-PG:** * **The Triad:** Seat belt syndrome classically includes **Abdominal wall ecchymosis + Mid-lumbar spine fracture (Chance Fracture) + Hollow viscus injury.** * **Most common organ injured:** Small bowel/Mesentery. * **Imaging:** CT scan is the investigation of choice, but it may initially be negative for hollow viscus injury; serial abdominal examinations are crucial. * **Chance Fracture:** It is a **distraction injury** (Type B in AO classification) and is highly unstable.

Q: A patient having a Glasgow Coma Scale score of 12 is suffering from which of the following degrees of head injury?

Moderate head injury. ### Explanation The **Glasgow Coma Scale (GCS)** is the gold standard clinical tool used to assess a patient's level of consciousness and categorize the severity of traumatic brain injury (TBI). It evaluates three components: Eye opening (E), Verbal response (V), and Motor response (M), with scores ranging from a minimum of 3 to a maximum of 15. Based on the total GCS score, head injuries are classified as follows: * **Mild Head Injury:** GCS 13–15 * **Moderate Head Injury:** GCS 9–12 * **Severe Head Injury:** GCS 3–8 (Often associated with coma) **Why Option C is Correct:** A GCS score of **12** falls squarely within the **9–12 range**, identifying the injury as **Moderate**. Patients in this category are usually lethargic or stuporous but can follow simple commands. **Why Other Options are Incorrect:** * **A & B (Minor/Mild):** These terms are often used interchangeably in clinical practice. A score of 13–15 is required for this classification. These patients are conscious and talkative but may have experienced brief post-traumatic amnesia. * **D (Severe):** This is defined by a GCS of 8 or less. In trauma management (ATLS guidelines), a GCS ≤ 8 is a definitive indication for **endotracheal intubation** ("Less than 8, intubate"). **High-Yield Clinical Pearls for NEET-PG:** 1. **Minimum Score:** The lowest possible GCS is **3** (not 0), even in a brain-dead patient. 2. **Motor Response:** The Motor (M) component is the most predictive of clinical outcomes. 3. **GCS in Children:** For children under 4 years, the **Paediatric Glasgow Coma Scale** is used, modifying the verbal and motor assessments to account for developmental age. 4. **Documentation:** If a patient is intubated, the verbal score is recorded as 'T' (e.g., GCS 5t), representing the presence of an endotracheal tube.

Q: Which of the following does not occur in unilateral renal trauma?

Uremia. **Explanation:** The correct answer is **Uremia (Option B)**. In the setting of **unilateral renal trauma**, the contralateral (opposite) kidney is typically healthy and functioning. A single normal kidney is more than capable of maintaining adequate glomerular filtration and excreting nitrogenous waste products. Therefore, serum urea and creatinine levels remain within normal limits. Uremia only occurs in renal trauma if there is pre-existing chronic kidney disease, bilateral renal injury, or injury to a solitary functioning kidney. **Analysis of Incorrect Options:** * **Hypertension (A):** This can occur due to the **"Page Kidney"** phenomenon. Compression of the renal parenchyma by a subcapsular or perinephric hematoma leads to activation of the Renin-Angiotensin-Aldosterone System (RAAS) due to relative ischemia. * **Clot formation (C):** Trauma often leads to bleeding into the collecting system. This results in hematuria, where blood can clot within the ureter (causing clot colic) or the bladder. * **Perinephric hematoma (D):** This is a hallmark of renal trauma (Grades II-V). Laceration of the renal parenchyma or vessels leads to blood accumulation within Gerota’s fascia. **NEET-PG High-Yield Pearls:** * **Investigation of Choice:** Contrast-Enhanced CT (CECT) is the gold standard for staging stable renal trauma. * **Management Trend:** Most renal injuries (Grades I-III and many IV) are managed **conservatively**. * **Absolute Indication for Surgery:** Hemodynamic instability due to renal hemorrhage or an expanding/pulsatile hematoma. * **Most Common Organ Injured in Blunt Trauma:** Spleen (overall), but Kidney is the most common urogenital organ injured.

Q: Which of the following is true regarding blunt injuries to the abdomen?

Rarely need urgent laparotomy. In blunt abdominal trauma (BAT), the management paradigm has shifted significantly toward **Non-Operative Management (NOM)**, making Option B the most accurate statement. ### Why Option B is Correct The majority of blunt injuries involve solid organs like the **spleen and liver**. In hemodynamically stable patients, these are managed conservatively with observation and serial imaging, regardless of the grade of injury. Urgent laparotomy is reserved only for patients with hemodynamic instability (refractory shock), signs of evisceration, or clear evidence of hollow viscus perforation. Statistically, over 80% of blunt abdominal trauma cases do not require immediate surgery. ### Why Other Options are Incorrect * **Option A & C:** While blunt trauma *can* cause peritonitis (via hollow viscus rupture) or intestinal obstruction (via intramural hematoma, commonly in the duodenum), these are **specific complications** rather than general rules for all blunt injuries. They occur much less frequently than solid organ contusions. * **Option D:** Gastroduodenal ulceration is typically a delayed stress response (e.g., Curling’s or Cushing’s ulcers) rather than a direct result of the blunt mechanical injury itself. ### High-Yield Clinical Pearls for NEET-PG * **Most common organ injured in BAT:** Spleen (followed by Liver). * **Most common cause of BAT:** Road Traffic Accidents (RTA). * **Investigation of Choice (Stable patient):** CECT Abdomen (Gold Standard). * **Investigation of Choice (Unstable patient):** FAST (Focused Assessment with Sonography for Trauma) or E-FAST. * **Seatbelt Syndrome:** Associated with mesenteric tears, hollow viscus injury, and Chance fractures of the spine. * **Indication for Laparotomy:** The single most important factor is **hemodynamic instability** despite resuscitation, not the grade of organ injury.

Q: Head and neck burns in an infant constitute what percentage of total body surface area burns?

18%. In pediatric trauma, calculating the Total Body Surface Area (TBSA) of burns requires adjusting the adult "Rule of Nines" to account for the disproportionately large head and smaller lower extremities of infants. **Explanation of the Correct Answer (B):** According to the **Lund and Browder chart** (the most accurate method for children) and the modified pediatric Rule of Nines, an infant’s head and neck account for **18%** of the TBSA. As a child grows, the head becomes relatively smaller while the legs become larger. For every year of age after 1 year, 1% is subtracted from the head and added to the legs until the adult proportions (9% for the head) are reached around age 10. **Analysis of Incorrect Options:** * **A (9%):** This is the percentage for the head and neck in **adults**. Using this for an infant would lead to a significant underestimation of fluid requirements. * **C (24%) & D (36%):** These values are physiologically inaccurate for the head and neck at any stage of development. 36% is the approximate TBSA for the entire trunk (front and back) in both adults and children. **High-Yield Clinical Pearls for NEET-PG:** * **The Rule of Palms:** The patient’s palm (including fingers) represents approximately **1%** of their TBSA; this is useful for estimating small or patchy burns. * **Fluid Resuscitation:** The **Parkland Formula** (4mL × kg × %TBSA) is used, but in children, **maintenance fluids** (using the 4-2-1 rule) must be added to the resuscitation volume because their glycogen stores are limited. * **Critical Area:** In infants, the head is the most significant source of evaporative heat and fluid loss due to its large surface area.

Q: A 45-year-old male presents with binocular diplopia and restricted eye movements following facial trauma. What is the immediate treatment plan?

Orbital floor reconstruction and miniplate fixation. ### Explanation The patient presents with classic signs of a **Zygomaticomaxillary Complex (ZMC) fracture**, often referred to as a "Tripod fracture." The presence of **binocular diplopia** and **restricted eye movements** (typically upward gaze) indicates entrapment of the inferior rectus muscle or periorbital fat within an associated orbital floor fracture (Blow-out component). **Why Option D is Correct:** Management of a displaced ZMC fracture requires a two-pronged approach: 1. **Reduction and Internal Fixation (RIF):** Using miniplates at the zygomaticofrontal suture or infraorbital rim to restore the facial projection and malar prominence. 2. **Orbital Floor Reconstruction:** Essential to release entrapped tissues and restore orbital volume, which corrects the diplopia and prevents late-onset enophthalmos. **Analysis of Incorrect Options:** * **Option A:** Addressing only the orbital floor ignores the instability of the zygomatic arch and malar bone, leading to facial asymmetry. * **Option B:** Intraoral elevation (e.g., Keen’s approach) is a technique for reduction but does not provide the rigid internal fixation or orbital floor repair required for complex fractures with diplopia. * **Option C:** While miniplate fixation addresses the bony framework, it fails to address the orbital floor defect causing the functional ocular deficit (diplopia). **Clinical Pearls for NEET-PG:** * **Most common site of orbital floor fracture:** Medial to the infraorbital groove. * **Hanging Drop Sign:** A classic radiological finding on Water’s view representing herniated orbital contents into the maxillary sinus. * **Nerve Involvement:** The **Infraorbital nerve** is the most commonly injured nerve in ZMC fractures, leading to anesthesia of the cheek and upper lip. * **Indications for Surgery:** Persistent diplopia, enophthalmos >2mm, or significant comminution/displacement.

Question 1

Which of the following is/are true about a Le Fort fracture?

Accepted Answer

May cause CSF rhinorrhea

Answer

It is a fracture of the zygomatic bone

Answer

Type 1: complete separation of facial bones from the cranial bones

Answer

Classified as types 1 to 5

Question 2

"Seat belt syndrome" is characterized by which of the following?

Accepted Answer

Sudden deceleration injury leading to a torn mesentery

Answer

Fracture of the ilium with rupture of the urethra

Answer

Fracture of the shaft of the femur with testicular swelling

Answer

Non-specific findings including mesenteric adenitis

Question 3

Which of the following is the best location for assessing the reduction of zygomatic fractures?

Accepted Answer

Zygomaticosphenoid suture

Answer

Zygomatic arch

Answer

Zygomatic-maxillary buttress

Answer

Infra-orbital rim

Question 4

What is the initial treatment for tension pneumothorax?

Accepted Answer

Insertion of a large bore needle in the 2nd intercostal space in the midclavicular line

Answer

Fluid resuscitation

Answer

Initiation of inotropic support

Answer

Endotracheal intubation

Question 5

A patient having a Glasgow Coma Scale score of 12 is suffering from which of the following degrees of head injury?

Accepted Answer

Moderate head injury

Answer

Minor head injury

Answer

Mild head injury

Answer

Severe head injury

Question 6

Which of the following does not occur in unilateral renal trauma?

Accepted Answer

Uremia

Answer

Hypertension

Answer

Clot formation

Answer

Perinephric hematoma

Question 7

Which of the following is true regarding blunt injuries to the abdomen?

Accepted Answer

Rarely need urgent laparotomy

Answer

May cause peritonitis

Answer

May cause intestinal obstruction

Answer

May cause gastroduodenal ulceration

Question 8

Head and neck burns in an infant constitute what percentage of total body surface area burns?

Accepted Answer

18%

Answer

9%

Answer

24%

Answer

36%

Question 9

A 19-year-old man sustains severe lower-extremity trauma, including a femur fracture and a crush injury to his foot. He requires vascular reconstruction of the popliteal artery. On the day after surgery, he becomes dyspneic and hypoxemic and requires intubation and mechanical ventilation. Which of the following is the most likely etiology of his decompensation?

Accepted Answer

Fat embolism syndrome

Answer

Aspiration

Answer

Atelectasis

Answer

Fluid overload

Question 10

A 45-year-old male presents with binocular diplopia and restricted eye movements following facial trauma. What is the immediate treatment plan?

Accepted Answer

Orbital floor reconstruction and miniplate fixation

Answer

Orbital floor reconstruction

Answer

Intraoral elevation of zygoma

Answer

Reduction and fixation of fracture with miniplate

Trauma — MCQs

Trauma — MCQs

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