Trauma Practice Questions

Q: The term mid-line shift is associated with:

Head injury. **Head injury** - **Mid-line shift** refers to the displacement of the brain's central structures, such as the septum pellucidum or pineal gland, from their normal position due to a **mass effect** from a lesion like a hematoma or edema following a head injury. - This displacement is a critical sign of increased **intracranial pressure** and can lead to herniation syndromes, indicating a severe and life-threatening condition. *Chest injury* - Chest injuries typically involve structures within the thorax, such as the lungs, heart, or rib cage. - While a tension pneumothorax can cause a **mediastinal shift** (displacement of the trachea and heart), this is distinct from a "mid-line shift" which specifically describes brain structures. *Abdominal injury* - Abdominal injuries usually affect organs like the liver, spleen, or intestines. - These injuries can cause significant internal bleeding or organ damage but do not directly lead to a "mid-line shift" of brain structures. *Limb injury* - Limb injuries involve damage to bones, muscles, ligaments, or blood vessels in the extremities. - These injuries are localized to the limbs and are not associated with any form of intracranial shift or increased intracranial pressure.

Q: A 25-year-old man sustains a stab wound to the right chest at the 4th intercostal space, midaxillary line. He is hemodynamically stable with normal breath sounds bilaterally. Chest X-ray shows a small right pneumothorax (15%) and no hemothorax. What is the most appropriate initial management?

Chest tube insertion. ***Chest tube insertion*** - A **chest tube** is indicated for **all pneumothoraces caused by penetrating trauma**, regardless of size, due to the high risk of progression, continued air leak, or occult injuries. - This patient's penetrating mechanism (stab wound to chest) mandates chest tube placement even though he is currently stable with a 15% pneumothorax. - Chest tube provides definitive management and allows monitoring for potential hemothorax development. *Emergency thoracotomy* - **Emergency thoracotomy** is reserved for severe, life-threatening injuries such as unstable patients with massive hemothorax, cardiac tamponade, or ongoing severe hemorrhage. - This patient is **hemodynamically stable** with a small pneumothorax and no hemothorax, which contraindicates the need for an immediate thoracotomy. *Observation with serial chest X-rays* - **Observation** may be appropriate for very small, asymptomatic spontaneous pneumothoraces in non-trauma patients. - Due to the **penetrating trauma mechanism**, observation is inappropriate regardless of the current size (15%), as there is high risk of progression to tension pneumothorax or development of delayed hemothorax. *CT scan of the chest* - A **CT scan** provides more detailed imaging but is not the initial management for an acute pneumothorax caused by penetrating trauma when chest X-ray has already confirmed the diagnosis. - The immediate priority is managing the pneumothorax with chest tube insertion; delaying intervention for CT scan could be detrimental if the pneumothorax progresses.

Q: A 35-year-old man presents to the emergency department after a motorcycle accident. He has a blood pressure of 80/50 mmHg, heart rate of 120/min, and is alert but anxious. FAST exam shows free fluid in the pelvis. His hemoglobin is 8.2 g/dL (normal 14-16 g/dL). Which combination of findings best supports the need for immediate surgical intervention?

Hemodynamic instability with positive FAST exam. ***Hemodynamic instability with positive FAST exam*** - The combination of **hypotension** (80/50 mmHg), **tachycardia** (120/min), and a **positive FAST exam** (free fluid in the pelvis) indicates active internal bleeding and hypovolemic shock. - These findings are classic indications for immediate **surgical exploration** to control hemorrhage and stabilize the patient. *Low hemoglobin with normal vital signs* - While a low hemoglobin (8.2 g/dL) indicates blood loss, **normal vital signs** would suggest that the bleeding is not currently life-threatening or that the patient has compensated. - This scenario might warrant further investigation and close monitoring, but not necessarily **immediate surgery**. *Free fluid in pelvis with normal blood pressure* - **Free fluid on FAST exam** suggests internal bleeding, but if the patient's **blood pressure is normal**, they may be hemodynamically stable or compensating. - This situation typically calls for further diagnostic imaging (e.g., CT scan) to quantify the amount of fluid and identify the source of bleeding before deciding on surgical intervention. *Motorcycle accident mechanism with stable vitals* - A **high-energy mechanism** like a motorcycle accident elevates suspicion for significant injuries, but **stable vital signs** imply the patient is not in immediate life-threatening hypovolemic shock. - Close observation and thorough diagnostic workup, including imaging, would be necessary, but **immediate surgery** is not mandated solely by mechanism with stability.

Q: A **hemodynamically stable** patient involved in a Road Traffic Accident (RTA) presents with: - Absent air entry on the left side of the chest. - Tenderness in the left lower chest wall. What is the next step in the Emergency Medicine Room (EMR) management?

Chest X-ray. ***X-ray*** - In a **hemodynamically stable** patient with absent air entry and chest wall tenderness post-RTA, a **chest X-ray** is the most appropriate initial imaging in the EMR. - It quickly diagnoses conditions like **pneumothorax**, **hemothorax**, or **rib fractures** and guides management decisions. - **Important**: Clinical assessment for **tension pneumothorax** (hypotension, tracheal deviation, distended neck veins) must be done first. If tension pneumothorax is suspected, **immediate needle decompression** is required without waiting for imaging. - X-ray is **rapidly available** and provides crucial information for trauma management in stable patients. *FAST* - **Focused Assessment with Sonography for Trauma (FAST)** is primarily used to detect **intra-abdominal free fluid** (hemoperitoneum) or pericardial effusion in trauma. - While valuable in RTA evaluation, it is not the primary diagnostic tool for absent air entry in the chest. - FAST has limited sensitivity for **pneumothorax** and does not visualize **rib fractures** in detail. *DPL* - **Diagnostic Peritoneal Lavage (DPL)** is an invasive procedure used to detect **intra-abdominal injury** and hemorrhage. - It has largely been replaced by FAST and CT scans due to its invasive nature and lower specificity. - DPL provides **no information about chest injuries** and is irrelevant for evaluating absent air entry. *CT* - A **CT scan** (chest CT) provides highly detailed imaging and is excellent for diagnosing specific chest injuries. - However, it is **time-consuming**, requires patient transport, and is typically reserved for **stable patients** after initial X-ray assessment. - In the immediate EMR setting, X-ray is preferred for rapid decision-making, with CT used for further evaluation if needed.

Q: Mr. Ramu, a 35-year-old male, sustained a straddle injury in a motor vehicle accident and presents to the emergency department with blood at the urethral meatus. What is the next appropriate step in his management?

Retrograde urethrogram. ***Retrograde urethrogram*** - **Blood at the urethral meatus** after a straddle injury is highly suggestive of **urethral injury**, and a retrograde urethrogram is the diagnostic test of choice to assess the integrity of the urethra. - This procedure involves injecting contrast into the urethra to visualize any extravasation, strictures, or complete disruptions before attempting catheterization. *CECT Abdomen* - A CECT abdomen is primarily used to assess **solid organ injuries** or **intra-abdominal bleeding**, which is not the primary concern suggested by blood at the urethral meatus. - While broad abdominal trauma may warrant a CECT, it does not directly evaluate urethral integrity. *FAST* - **FAST (Focused Assessment with Sonography for Trauma)** is a rapid ultrasound examination to detect **free fluid (blood)** in the peritoneal or pericardial cavities. - It is used to identify **intra-abdominal or pericardial hemorrhage** and guide resuscitation, but it does not visualize the urethra. *Abdomen X-ray* - An abdomen X-ray can detect **fractures of the pelvis** or foreign bodies, but it does not provide detailed imaging of soft tissues like the urethra. - It would not show urethral extravasation or disruption, making it insufficient for diagnosing urethral injury.

Q: A patient presents to the casualty following blunt trauma to the chest. A chest X-ray was done. Among the following radiographs, in which case would you further evaluate the patient before putting a chest tube? 1. Diaphragmatic hernia 2. Hemothorax 3. Pneumothorax 4. Flail chest

Diaphragmatic hernia. ***Correct Option: Diaphragmatic hernia*** - A **diaphragmatic hernia** (showing elevated hemidiaphragm with loops of bowel in the hemithorax) requires **further evaluation before chest tube placement** - **CT scan with contrast** or **nasogastric tube with X-ray** should be performed to delineate the anatomy and confirm herniated abdominal contents - **Chest tube placement is contraindicated** or requires extreme caution as it could perforate herniated abdominal organs (stomach, bowel, liver, spleen) - This condition requires **surgical repair**, not chest drainage - The key principle: **Always evaluate thoroughly before intervention when diaphragmatic injury is suspected** *Incorrect Option: Pneumothorax* - A **pneumothorax** (characterized by absence of lung markings in the periphery and visceral pleural line) has a straightforward indication for chest tube - **Chest tube is the definitive management** for significant or symptomatic pneumothorax to re-expand the lung - No additional evaluation needed before chest tube placement in hemodynamically stable patients with confirmed pneumothorax *Incorrect Option: Hemothorax* - A **hemothorax** (showing opacification in the lower lung field with blunting of costophrenic angle and fluid level) has a clear indication for chest tube - **Chest tube is indicated** to drain blood, relieve lung compression, and monitor for ongoing bleeding - Immediate chest tube placement is appropriate once diagnosed *Incorrect Option: Flail chest* - A **flail chest** (multiple rib fractures in two or more places creating unstable chest wall segment) primarily requires **pain management and ventilatory support** - A chest tube is **not indicated for flail chest itself** unless there is an associated pneumothorax or hemothorax - If flail chest is isolated, you would not place a chest tube at all, making this option incorrect for the question asked

Q: A patient presents with pneumothorax on chest x-ray. Which of the following is NOT a boundary of the triangle of safety for intercostal chest drain (ICD) insertion?

Mid - clavicular line. ***Mid-clavicular line*** - The **mid-clavicular line** is **NOT** a boundary of the triangle of safety; it is a vertical reference line located centrally on the thorax. - The triangle of safety is located in the **mid-axillary region**, not at the mid-clavicular line. - The mid-clavicular line is used for other procedures but is **anterior to the safe zone** for ICD insertion. *Base of axilla* - The **base of the axilla** forms the **superior boundary** of the triangle of safety. - This boundary is typically at the level of the **5th intercostal space** (nipple level in males). - It helps guide ICD insertion away from the **brachial plexus** and axillary vessels. *Lateral border of latissimus dorsi* - The **lateral border of the latissimus dorsi muscle** forms the **posterior boundary** of the triangle of safety. - This landmark ensures the insertion is anterior to major back muscles and avoids injury to the long thoracic nerve. *Lateral edge of pectoralis major* - The **lateral edge of the pectoralis major muscle** forms the **anterior boundary** of the triangle of safety. - This ensures the ICD is inserted lateral to the pectoral muscle, avoiding breast tissue and superficial vessels.

Question 1

The term mid-line shift is associated with:

Accepted Answer

Head injury

Answer

Chest injury

Answer

Abdominal injury

Answer

Limb injury

Question 2

A 25-year-old man sustains a stab wound to the right chest at the 4th intercostal space, midaxillary line. He is hemodynamically stable with normal breath sounds bilaterally. Chest X-ray shows a small right pneumothorax (15%) and no hemothorax. What is the most appropriate initial management?

Accepted Answer

Chest tube insertion

Answer

Emergency thoracotomy

Answer

Observation with serial chest X-rays

Answer

CT scan of the chest

Question 3

A 35-year-old man presents to the emergency department after a motorcycle accident. He has a blood pressure of 80/50 mmHg, heart rate of 120/min, and is alert but anxious. FAST exam shows free fluid in the pelvis. His hemoglobin is 8.2 g/dL (normal 14-16 g/dL). Which combination of findings best supports the need for immediate surgical intervention?

Accepted Answer

Hemodynamic instability with positive FAST exam

Answer

Low hemoglobin with normal vital signs

Answer

Free fluid in pelvis with normal blood pressure

Answer

Motorcycle accident mechanism with stable vitals

Question 4

45-year-old construction worker presents after falling from scaffolding. He has multiple injuries: closed head injury with GCS 12, flail chest with respiratory distress, grade 3 splenic laceration with hemoperitoneum, and an open femur fracture. His blood pressure is 85/50 mmHg, heart rate 125/min, and oxygen saturation 88%. The trauma team must prioritize interventions. What is the most appropriate sequence of management?

Accepted Answer

Intubation → chest tube → splenectomy → damage control orthopedics

Answer

Intubation → splenectomy → external fixation of femur → ICP monitoring

Answer

Chest tube → splenectomy → intubation → neurosurgical intervention

Answer

Splenectomy → intubation → femur fixation → neurosurgical consultation

Question 5

A **hemodynamically stable** patient involved in a Road Traffic Accident (RTA) presents with:

- Absent air entry on the left side of the chest.
- Tenderness in the left lower chest wall.

What is the next step in the Emergency Medicine Room (EMR) management?

Accepted Answer

Chest X-ray

Answer

FAST (Focused Assessment with Sonography for Trauma)

Answer

DPL (Diagnostic Peritoneal Lavage)

Answer

CT scan (Computed Tomography)

Question 6

Mr. Ramu, a 35-year-old male, sustained a straddle injury in a motor vehicle accident and presents to the emergency department with blood at the urethral meatus. What is the next appropriate step in his management?

Accepted Answer

Retrograde urethrogram

Answer

CECT Abdomen

Answer

FAST

Answer

Abdomen X-ray

Question 7

A patient with a left hypochondrium contusion presents with systolic blood pressure of 70 mm Hg and pulse rate of 110 bpm. What is the best step in management?

Accepted Answer

Emergency surgical exploration

Answer

Conservative management with observation

Answer

Chest tube insertion

Answer

Antibiotic therapy

Question 8

A patient presents with breathlessness and decreased air entry into the right lung following a road traffic accident (RTA) and is hypotensive. What is the next step in management?

Accepted Answer

Needle insertion at 2nd ICS in midclavicular line (MCL)

Answer

Wide bore needle decompression

Answer

Needle insertion at 5th ICS in mid-axillary line

Answer

Fluid resuscitation using wide bore cannula

Question 9

A patient presents to the casualty following blunt trauma to the chest. A chest X-ray was done. Among the following radiographs, in which case would you further evaluate the patient before putting a chest tube?

1. Diaphragmatic hernia
2. Hemothorax
3. Pneumothorax
4. Flail chest

Accepted Answer

Diaphragmatic hernia

Answer

Flail chest

Answer

Pneumothorax

Answer

Hemothorax

Question 10

A patient presents with pneumothorax on chest x-ray. Which of the following is NOT a boundary of the triangle of safety for intercostal chest drain (ICD) insertion?

Accepted Answer

Mid - clavicular line

Answer

Base of axilla

Answer

Lateral border of latissimus dorsi

Answer

Lateral edge of pectoralis major

Trauma — MCQs

Trauma — MCQs

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