Trauma Practice Questions

Q: In blunt chest trauma, the first step in management after initial resuscitation is

X-ray chest. ***X-ray chest*** - After initial resuscitation in **blunt chest trauma**, a chest X-ray is the **fastest and most accessible initial imaging modality** to identify life-threatening injuries like **pneumothorax, hemothorax, or major fractures**. - It helps guide immediate interventions and further diagnostic steps by providing crucial information about the **lungs, heart, and bony structures**. *CT scan* - A CT scan provides **more detailed anatomical information** but is generally performed **after initial stabilization** and a plain chest X-ray. It's not the very first imaging step. - While it can detect injuries missed by X-ray, its **time commitment and resource requirements** make it suboptimal for immediate, life-saving decision-making in the initial trauma phase. *Angiography* - Angiography is an **invasive procedure** used to visualize blood vessels, typically reserved for suspected **vascular injuries** identified or highly suggested by other imaging or clinical findings. - It is **not a routine first step** in the immediate management of blunt chest trauma and carries its own risks. *USG* - Ultrasound (USG) can be useful in trauma for detecting **pericardial effusion** (**FAST exam**) or **pleural fluid**, but it offers **limited visualization of the entire chest cavity** compared to X-ray. - It is typically used as an **adjunct** or for specific questions, not as the primary comprehensive initial imaging in blunt chest trauma.

Q: Under what circumstances is a countercoup injury most likely to occur?

When the moving head is suddenly decelerated. ***When the moving head is suddenly decelerated*** - A **countercoup injury** occurs when the brain impacts the skull on the side *opposite* to the initial point of impact. - This typically happens during **sudden deceleration** of a moving head (e.g., head striking dashboard in motor vehicle accident), causing the brain to continue its forward motion and strike the opposite interior surface of the skull. - Classic example: frontal impact causing occipital lobe contusion. *When the stationary head is suddenly accelerated* - This scenario more commonly leads to a **coup injury**, where the brain impacts the skull at the *point of initial impact*. - The sudden acceleration drives the brain against the skull in the direction of the applied force. *When a heavy object falls on the head* - This scenario is a direct impact injury, primarily causing a **coup injury** at the site of impact. - While significant force can cause widespread brain injury, the primary mechanism is direct blow at the impact site. *When the head undergoes rotational acceleration* - Rotational acceleration primarily causes **diffuse axonal injury (DAI)** due to shearing forces on white matter tracts. - While severe rotational forces can cause contusions, they are not the classic mechanism for countercoup injury.

Q: Most common organ affected in underwater blast?

Intestine. ***Intestine*** - The **intestine** is the most commonly injured organ in underwater blast injuries due to its large surface area and high gas content. - The gas-filled loops of the bowel are highly susceptible to damage from the rapid pressure changes and shear forces generated by a blast wave in water. *Liver* - The liver is a **solid organ** and is generally more resilient to blast injury compared to gas-filled structures. - While it can be injured, it is not as frequently affected as the intestine in underwater blast scenarios. *Spleen* - Similar to the liver, the spleen is a **solid organ** and less prone to primary blast injury compared to the highly compressible, gas-filled intestine. - Blast injuries to the spleen are usually associated with secondary trauma rather than direct blast wave effects. *Heart* - The heart is relatively protected by the chest wall and is a **solid, muscular organ**, making it less susceptible to direct primary blast injury than air-filled organs. - While blast waves can cause cardiac contusions or arrhythmias, it is not the most commonly affected organ in underwater blast.

Q: A patient was brought to the ER following a road traffic accident. On examination, the patient opens his eyes to a painful stimulus, speaks inappropriately, and withdraws his limbs to a painful stimulus. What is his GCS score?

E2V3M4. ***E2V3M4*** - Eye opening to **painful stimulus** scores 2 (E2). - Inappropriate speech scores 3 (V3). - Withdrawal from pain scores 4 (M4). *E2V2M3* - This option incorrectly assesses the **verbal response** and **motor response**. - Speaking incomprehensibly scores V2, while here the patient speaks inappropriately (V3). - Flexion to pain scores M3, but the patient exhibits withdrawal from pain (M4). *E3V3M3* - This option incorrectly assesses the **eye opening response**. - Eye opening to verbal command scores E3, but here the patient opens eyes to painful stimulus (E2). - The motor response is also incorrect, as M3 is flexion to pain, not withdrawal from pain (M4). *E3V2M2* - This option incorrectly assesses all three components of the **GCS score**. - A patient who opens eyes to a painful stimulus would score E2, not E3 (eyes opening to verbal command). - Both verbal (V3 for inappropriate speech, not V2 for incomprehensible sounds) and motor responses (M4 for withdrawal from pain, not M2 for extension to pain) are incorrectly scored.

Q: A man under alcohol intoxication fell into a manhole and sustained a perineal injury with a swollen scrotum and upper thigh, along with blood at the meatus. The patient is experiencing difficulty passing urine. What is the most likely injury associated with this trauma?

Bulbar urethral injury. ***Bulbar urethra*** - The combination of a **perineal injury** (falling into a manhole), **scrotal and upper thigh swelling**, and **blood at the meatus** strongly indicates a **bulbar urethral injury**. - **Difficulty passing urine** further supports urethral damage, as the bulbar urethra is the most common site of injury from straddle or crush injuries to the perineum. *Bladder rupture* - While bladder rupture can cause difficulty urinating, the primary findings would typically be **suprapubic pain**, a **distended abdomen**, and possibly **hematuria**, not necessarily significant scrotal swelling or blood at the meatus alone. - A bladder rupture is more common with a **direct blow to a full bladder** or a pelvic fracture, rather than a direct perineal impact. *Penile fracture* - **Penile fracture** results from penile trauma during intercourse (or forced bending) and presents with a sudden "snapping" sound, immediate pain, detumescence, and a characteristic "eggplant deformity" due to a ruptured tunica albuginea. - It does not typically involve significant perineal swelling or blood at the meatus in the absence of concomitant urethral injury. *Membranous urethra* - Injuries to the **membranous urethra** are usually associated with **pelvic fractures** and are less commonly linked with direct perineal trauma without evidence of a bony injury. - While blood at the meatus and difficulty urinating can occur, the prominent scrotal and upper thigh swelling from a direct perineal impact points more specifically to the **bulbar urethra**.

Q: What structures are involved in a degloving injury?

skin, subcutaneous fat, and sometimes fascia. ***skin, subcutaneous fat, and sometimes fascia*** - A **degloving injury** involves the complete detachment or tearing away of the top layers of skin and **subcutaneous tissue** (fat) from the underlying structures. - In more severe cases, the injury can extend deeper to include the **fascia** covering muscles, exposing them but usually not directly involving the muscle itself. *skin, subcutaneous fat, fascia, and muscle* - While it includes skin, fat, and fascia, a typical degloving injury generally **does not directly involve the muscle tissue itself**. - If muscle is damaged, it's usually due to a more extensive, crushing type of injury in addition to the degloving, rather than solely the degloving mechanism. *skin and subcutaneous fat* - This option is partially correct as it includes the primary layers involved but **omits the potential involvement of the fascia**, which can be significant in deeper degloving injuries. - A true degloving injury often separates these layers from the underlying fascia, and sometimes the fascia itself is avulsed. *skin only* - This is an **underestimation of the injury's depth**, as degloving inherently involves the entire loss of the skin and the underlying **subcutaneous fat**. - An injury involving only the epidermis or superficial dermis would be classified differently, such as an abrasion or avulsion of superficial skin.

Q: A 25-year-old patient has sustained a head injury. The patient is confused, opens eyes in response to pain, and localizes pain. What is the Glasgow Coma Scale (GCS) score for this patient?

11. ***11*** - The patient opens eyes in response to pain (E2), is confused (V4), and localizes pain (M5). - Adding these scores together (2 + 4 + 5) gives a total **Glasgow Coma Scale (GCS) score of 11**. *6* - This score would indicate a much more severe neurological compromise, such as no eye opening (E1), incomprehensible sounds (V2), and abnormal flexion (M3). - The patient's presentation of eye opening to pain, confusion, and localizing pain is significantly better than a GCS of 6. *12* - A GCS of 12 would suggest better responses, for example, eye opening to speech (E3) while maintaining confusion (V4) and localizing pain (M5). - The patient's eye opening only in response to pain (E2) makes a score of 12 too high. *7* - A GCS of 7 would signify a more serious injury, such as eye opening to pain (E2), incomprehensible sounds (V2), and abnormal flexion or withdrawal from pain (M3 or M4). - The patient's ability to localize pain (M5) and being confused rather than making incomprehensible sounds (V4) makes a score of 7 too low.

Q: 22-year-old woman presents to the emergency department with a chief complaint of severe left upper quadrant [LUQ] pain after being punched by her husband. Her blood pressure is 110/76, her pulse is 80 bpm, and her respiration rate is 24 breaths per minute. The best means to establish a diagnosis is which of the following?

CT of the abdomen. ***CT of the abdomen*** - A **CT scan of the abdomen** is the diagnostic method of choice for evaluating blunt abdominal trauma in hemodynamically stable patients. - It effectively identifies and characterizes injuries to solid organs like the spleen (located in the LUQ), pancreas, and kidneys, as well as detecting **intraperitoneal fluid** (hemorrhage). *Four-quadrant tap of the abdomen* - A **four-quadrant tap**, or paracentesis, is primarily used to diagnose **ascites** or **spontaneous bacterial peritonitis**. - It is less effective and not the first-line diagnostic for identifying specific organ injuries following blunt trauma, especially when a CT scan is available and the patient is stable. *Peritoneal lavage* - **Diagnostic peritoneal lavage (DPL)** is an invasive procedure primarily used in hemodynamically unstable trauma patients where other imaging modalities are not readily available or definitive. - It is less specific for identifying individual organ damage compared to CT and carries a higher risk of complications. *Upper gastrointestinal [GI] series* - An **upper GI series** uses barium contrast to visualize the esophagus, stomach, and duodenum, primarily for assessing mucosal abnormalities, ulcers, or strictures. - It is not indicated for the evaluation of acute blunt abdominal trauma or suspected solid organ injury.

Q: A child presented with blunt abdominal trauma, the first investigation to be done is -

USG. ***USG*** - An **ultrasound (USG)** is the **first-line imaging investigation** for blunt abdominal trauma in children due to its **non-invasive nature**, lack of radiation exposure, and rapid bedside availability. - **FAST (Focused Assessment with Sonography for Trauma)** effectively identifies the presence of **free fluid** (indicating internal bleeding/hemoperitoneum) and can assess solid organ injuries, particularly the **spleen and liver**. - It is the **preferred initial investigation in hemodynamically stable pediatric patients**. *CT Scan* - A **CT scan** is more sensitive and provides detailed anatomical information but involves significant **radiation exposure**, which is a major concern in children. - It is usually reserved for cases where USG is inconclusive, there is a **high clinical suspicion of severe injury**, or when determining the need for surgical intervention in hemodynamically stable patients. *Complete Hemogram* - A **complete hemogram** assesses blood components like hemoglobin and hematocrit, which are crucial for evaluating blood loss, but it is a **laboratory test, not an imaging investigation**. - While important for initial assessment and serial monitoring, it doesn't provide immediate information about the **location, type, or extent of internal abdominal injuries**. *Abdominal X-ray* - An **abdominal X-ray** has limited utility in blunt abdominal trauma as it is primarily useful for detecting **hollow viscus perforation (free air)** or bony fractures. - It does not effectively visualize soft tissue injuries, fluid collections, or solid organ damage, making it unsuitable as the primary diagnostic tool in blunt abdominal trauma.

Q: Which of the following is an indication for thoracotomy in the case of hemothorax?

Persistent drainage of 250 ml/hr. ***Persistent drainage of 250 ml/hr*** - A persistent **high drainage rate** (>200-250 mL/hr for 2-4 hours) indicates ongoing significant hemorrhage requiring surgical exploration via **thoracotomy**. - This criterion is crucial for preventing hemodynamic instability and persistent blood loss that cannot be controlled by a chest tube alone. - This is a **quantifiable, objective indication** for emergency thoracotomy. *Total output of 1000 ml of blood* - While 1000 mL of blood from a chest tube is significant, a **total initial output of >1500 mL** is the standard threshold for immediate thoracotomy. - A total output of 1000 mL without persistent high flow rates may often be managed conservatively with chest tube drainage alone. *Clotted hemothorax with incomplete drainage* - **Clotted or retained hemothorax** is typically managed with **video-assisted thoracoscopic surgery (VATS)** or intrapleural fibrinolytics, not emergency thoracotomy. - This is a delayed complication requiring evacuation of organized blood, but not the urgent bleeding control that emergency thoracotomy addresses. - Emergency thoracotomy is indicated for **active ongoing bleeding**, not retained clot. *Shift of mediastinum to the opposite side due to tension pneumothorax* - A **tension pneumothorax** causes mediastinal shift and is a life-threatening emergency requiring **immediate needle decompression and chest tube insertion**, not thoracotomy. - This describes air accumulation under tension, not the persistent bleeding that indicates thoracotomy for hemothorax. - While both are traumatic conditions, the management is fundamentally different.

Question 1

In blunt chest trauma, the first step in management after initial resuscitation is

Accepted Answer

X-ray chest

Answer

CT scan

Answer

Angiography

Answer

USG

Question 2

Under what circumstances is a countercoup injury most likely to occur?

Accepted Answer

When the moving head is suddenly decelerated

Answer

When the stationary head is suddenly accelerated

Answer

When a heavy object falls on the head

Answer

When the head undergoes rotational acceleration

Question 3

Most common organ affected in underwater blast?

Accepted Answer

Intestine

Answer

Spleen

Answer

Heart

Answer

Liver

Question 4

A patient was brought to the ER following a road traffic accident. On examination, the patient opens his eyes to a painful stimulus, speaks inappropriately, and withdraws his limbs to a painful stimulus. What is his GCS score?

Accepted Answer

E2V3M4

Answer

E2V2M3

Answer

E3V3M3

Answer

E3V2M2

Question 5

A man under alcohol intoxication fell into a manhole and sustained a perineal injury with a swollen scrotum and upper thigh, along with blood at the meatus. The patient is experiencing difficulty passing urine. What is the most likely injury associated with this trauma?

Accepted Answer

Bulbar urethral injury

Answer

Bladder rupture

Answer

Penile fracture

Answer

Membranous urethral injury

Question 6

What structures are involved in a degloving injury?

Accepted Answer

skin, subcutaneous fat, and sometimes fascia

Answer

skin, subcutaneous fat, fascia, and muscle

Answer

skin and subcutaneous fat

Answer

skin only

Question 7

A 25-year-old patient has sustained a head injury. The patient is confused, opens eyes in response to pain, and localizes pain. What is the Glasgow Coma Scale (GCS) score for this patient?

Accepted Answer

11

Answer

6

Answer

12

Answer

7

Question 8

22-year-old woman presents to the emergency department with a chief complaint of severe left upper quadrant [LUQ] pain after being punched by her husband. Her blood pressure is 110/76, her pulse is 80 bpm, and her respiration rate is 24 breaths per minute. The best means to establish a diagnosis is which of the following?

Accepted Answer

CT of the abdomen

Answer

Four-quadrant tap of the abdomen

Answer

Peritoneal lavage

Answer

Upper gastrointestinal [GI] series

Question 9

A child presented with blunt abdominal trauma, the first investigation to be done is -

Accepted Answer

USG

Answer

CT Scan

Answer

Complete Hemogram

Answer

Abdominal X-ray

Question 10

Which of the following is an indication for thoracotomy in the case of hemothorax?

Accepted Answer

Persistent drainage of 250 ml/hr

Answer

Total output of 1000 ml of blood

Answer

Clotted hemothorax with incomplete drainage

Answer

Shift of mediastinum to the opposite side due to tension pneumothorax

Trauma — MCQs

Trauma — MCQs

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