Trauma Practice Questions

Q: Bilateral subconjunctival ecchymosis is not associated with which of the following fractures?

Le-Fort I fracture. **Explanation:** The presence of **bilateral subconjunctival ecchymosis** (without a posterior limit) is a clinical hallmark of fractures involving the **orbital walls** or the **base of the skull**. **Why Le-Fort I is the correct answer:** Le-Fort I, also known as a **Guerin fracture** or horizontal maxillary fracture, involves a low-level horizontal line passing above the apices of the teeth, through the maxillary sinus, and the lower part of the pterygoid plates. Crucially, the fracture line in Le-Fort I **does not involve the orbits**. Therefore, it does not cause subconjunctival hemorrhage or periorbital edema. **Analysis of incorrect options:** * **Le-Fort II (Pyramidal fracture):** The fracture line extends through the **infraorbital margin** and the floor of the orbit. This bony disruption leads to bleeding into the subconjunctival space. * **Le-Fort III (Craniofacial disjunction):** This involves complete separation of the midface from the skull base. The fracture line passes through the **lateral and medial orbital walls** and the orbital floor, making bilateral subconjunctival ecchymosis a classic finding. * **Naso-ethmoidal complex (NOE) fracture:** These fractures involve the ethmoid bone and the medial wall of the orbit. The proximity to the orbital contents frequently results in subconjunctival hemorrhage. **High-Yield Clinical Pearls for NEET-PG:** * **Subconjunctival Hemorrhage:** If you cannot see the **posterior limit** of the hemorrhage, it suggests blood is tracking forward from a fracture of the orbital walls or base of the skull (e.g., Battle sign/Raccoon eyes). * **Le-Fort I:** Characterized by a "floating palate." * **Le-Fort II:** Characterized by "step-off" deformity at the infraorbital margin and anesthesia in the distribution of the infraorbital nerve. * **Le-Fort III:** Characterized by "dish-face" deformity and lengthening of the face.

Q: In the primary survey of a severely wounded patient, what does 'c' in the 'cABCDE' approach stand for?

Catastrophic haemorrhage. In modern trauma management, particularly in military and pre-hospital settings, the traditional **ABCDE** approach has been updated to **cABCDE**. ### **Explanation of the Correct Answer** The lowercase **'c'** stands for **Catastrophic Haemorrhage**. This refers to massive, life-threatening external bleeding (usually from a limb or a junctional area) that can lead to exsanguination within minutes—often before an airway can even be secured. In the hierarchy of survival, "bleeding out" kills faster than a blocked airway. Therefore, the priority is to control such hemorrhage using **tourniquets** or **hemostatic dressings** before proceeding to 'A' (Airway). ### **Analysis of Incorrect Options** * **A & B (Care about surroundings / Call for help):** While scene safety and calling for backup are essential steps in the initial response, they are part of the "Preparation" or "Scene Survey" phase and are not formal components of the clinical cABCDE mnemonic. * **D (Cardiac status):** Evaluation of the heart (Circulation) is represented by the uppercase **'C'** in the sequence. This involves checking pulse, capillary refill, and managing internal bleeding/shock, which follows Airway and Breathing. ### **High-Yield Clinical Pearls for NEET-PG** * **The "March" Mnemonic:** Similar to cABCDE, the **MARCH** algorithm (Massive Hemorrhage, Airway, Respiration, Circulation, Head/Hypothermia) is also used in tactical medicine. * **Tourniquet Rule:** In catastrophic limb bleeding, a tourniquet should be applied "high and tight" over the clothing until the bleeding stops. * **Order of Mortality:** Remember the trauma triad of death: **Acidosis, Coagulopathy, and Hypothermia**. Early control of 'c' helps prevent this lethal cycle. * **ATLS 10th Edition:** While ATLS focuses on ABCDE, it acknowledges that external exsanguination must be addressed immediately upon patient contact.

Q: A patient with a history of chest trauma presents to the emergency department with a BP of 90/70 mm Hg and a pulse rate of 120/min. The patient is observed to be short of breath, using accessory muscles of respiration. The JVP is not elevated. What is the most likely diagnosis?

Massive Hemothorax. ### Explanation The patient presents with signs of **hypovolemic shock** (hypotension and tachycardia) and respiratory distress following chest trauma. The clinical differentiator here is the **Jugular Venous Pressure (JVP)**. **1. Why Massive Hemothorax is correct:** Massive hemothorax is defined as >1500 ml of blood (or 1/3 of the patient's blood volume) in the pleural space. This leads to two primary issues: * **Hypovolemic Shock:** Significant blood loss leads to decreased preload, resulting in hypotension and **flat neck veins (low JVP)**. * **Respiratory Distress:** Blood in the pleural space causes lung collapse and mediastinal shift, leading to dyspnea and decreased breath sounds on the affected side. **2. Why other options are incorrect:** * **Tension Pneumothorax:** While it causes hypotension and respiratory distress, it is characterized by **distended neck veins (elevated JVP)** due to increased intrathoracic pressure impeding venous return. Percussion would reveal hyper-resonance, whereas hemothorax reveals dullness. * **Cardiac Tamponade:** This presents with **Beck’s Triad** (hypotension, muffled heart sounds, and **elevated JVP**). Unlike hemothorax, the lungs are usually clear on auscultation, and there is no significant respiratory distress unless associated with other injuries. **3. Clinical Pearls for NEET-PG:** * **The JVP Rule:** In a trauma patient with shock and respiratory distress: * **Low JVP/Flat veins** = Massive Hemothorax. * **High JVP/Distended veins** = Tension Pneumothorax or Cardiac Tamponade. * **Percussion:** Dullness = Hemothorax; Hyper-resonance = Pneumothorax. * **Management:** The initial treatment for massive hemothorax is a wide-bore chest tube (Intercostal Drainage). An immediate output of **>1500 ml** or a continuous output of **200 ml/hr for 2–4 hours** is an indication for urgent **Thoracotomy**.

Q: A patient presents with breathlessness following a road traffic accident. Which of the following is the best method to differentiate between cardiac tamponade and tension pneumothorax?

Breathing sounds. **Explanation:** In the setting of thoracic trauma, both **Cardiac Tamponade** and **Tension Pneumothorax** are life-threatening conditions that present with obstructive shock, hypotension, and distended neck veins (elevated JVP). The most reliable clinical finding to differentiate between them at the bedside is the **auscultation of breath sounds.** 1. **Why "Breathing Sounds" is correct:** * **Tension Pneumothorax:** Characterized by **absent or significantly diminished breath sounds** on the affected side, along with hyper-resonance on percussion and tracheal deviation. * **Cardiac Tamponade:** Breath sounds remain **normal and bilateral** because the pathology is confined to the pericardial sac, not the pleural space. 2. **Why other options are incorrect:** * **Jugular Venous Pressure (JVP):** Both conditions cause increased JVP due to impaired venous return to the heart. Therefore, it cannot be used to distinguish them. * **Pulse Pressure & Pulse Volume:** Both conditions lead to a state of shock characterized by tachycardia, low pulse volume, and narrowed pulse pressure. While *Pulsus Paradoxus* is a classic sign of tamponade, it can also occur in severe tension pneumothorax. **Clinical Pearls for NEET-PG:** * **Beck’s Triad (Cardiac Tamponade):** Hypotension, Distended neck veins, and Muffled heart sounds. * **The "Diamond" Rule:** If a patient has respiratory distress + hypotension + distended neck veins: * *Absent breath sounds* = Tension Pneumothorax. * *Normal breath sounds* = Cardiac Tamponade. * **Immediate Management:** Tension pneumothorax requires immediate **needle thoracocentesis** (5th ICS mid-axillary line in adults), while tamponade requires **pericardiocentesis**.

Q: A deep injury of the neck always involves which of the following structures?

Platysma. In surgical and clinical anatomy, the definition of a "penetrating" or "deep" neck injury is strictly based on the integrity of the **Platysma muscle** [1]. 1. **Why Platysma is correct:** The platysma is a thin, wide sheet of muscle located within the superficial fascia of the neck. Anatomically, it serves as the boundary line: any wound that breaches the platysma is classified as a "penetrating neck injury." This is because the platysma lies superficial to the **investing layer of deep cervical fascia**. Once this muscle is pierced, there is a high risk of damage to vital underlying structures (vessels, nerves, trachea, or esophagus), necessitating surgical consultation or exploration [1]. 2. **Why other options are incorrect:** * **Trapezius & Sternocleidomastoid:** These are large muscles enclosed within the investing layer of deep cervical fascia. While they are often involved in neck trauma, an injury can be "deep" (penetrating the platysma) without involving these specific muscles, especially if the injury is midline or localized to the anterior/posterior triangles. * **Longus colli:** This is a prevertebral muscle located deep to the prevertebral fascia, directly against the vertebral column. It is only involved in extremely deep or transfixing injuries. **High-Yield Clinical Pearls for NEET-PG:** * **Zone System:** Penetrating neck injuries are divided into three zones (Zone I: Clavicle to Cricoid; Zone II: Cricoid to Angle of Mandible; Zone III: Angle of Mandible to Base of Skull) [1]. * **Management Rule:** If the platysma is not breached, the wound is considered superficial and can usually be managed with local wound care. If the platysma is breached, the patient requires admission and further imaging (CTA) or surgical exploration. * **Nerve Supply:** The platysma is supplied by the **cervical branch of the Facial Nerve (CN VII)**.

Q: A patient presents with necrotizing cellulitis after a bite on the leg. What is the ideal initial management?

Surgical exploration. **Explanation:** **Necrotizing Cellulitis (Necrotizing Fasciitis)** is a surgical emergency characterized by rapid, widespread destruction of the superficial fascia and subcutaneous fat. The diagnosis is primarily **clinical**. **Why Surgical Exploration is the Correct Answer:** In cases of suspected necrotizing soft tissue infections (NSTI), **surgical exploration and aggressive debridement** is the gold standard for both diagnosis and treatment. Delaying surgery to wait for imaging or lab results significantly increases mortality. The "finger test" (lack of bleeding, "dishwater" pus, and easy blunt dissection of the fascia) during exploration confirms the diagnosis. **Why Other Options are Incorrect:** * **MRI (A) & CT (B):** While imaging may show fascial thickening or subcutaneous gas (pathognomonic), it lacks the sensitivity to rule out early infection. A negative scan should never delay surgery if clinical suspicion is high. * **C-reactive protein (C):** Inflammatory markers like CRP and WBC are often elevated (used in the LRINEC score), but they are non-specific and do not provide a definitive diagnosis or therapeutic benefit in an acute setting. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Hallmark:** "Pain out of proportion" to physical findings and cutaneous anesthesia (due to nerve destruction). * **Hard Signs:** Crepitus, skin necrosis, bullae, and rapid progression. * **LRINEC Score:** Used to distinguish necrotizing from non-necrotizing infections (includes CRP, WBC, Hemoglobin, Sodium, Creatinine, and Glucose). * **Microbiology:** Type I is polymicrobial (common in diabetics); Type II is monomicrobial (Group A Streptococcus). * **Management Rule:** "The sun should not set on a necrotizing infection." Immediate debridement + broad-spectrum antibiotics (e.g., Carbapenem + Clindamycin) is mandatory.

Question 1

A 8-year-old child received contrast injection in the hand for CECT chest. Immediately, he developed swelling in the arm which gradually increased. After 4 hours, there was numbness and pain, and he was unable to flex his hand. Pulse is present. What is the most appropriate immediate management?

Accepted Answer

Immediate fasciotomy

Answer

High dose prednisolone

Answer

Arterial thrombectomy

Answer

Angiography

Question 2

Which organs are most commonly affected by blast injuries?

Accepted Answer

Hollow viscera

Answer

Solid organs

Answer

Skeletal system

Answer

Muscles

Question 3

Accidental small splenic rupture is treated with?

Accepted Answer

Catgut suturing with omental patch

Answer

Catgut sutures

Answer

Silk sutures

Answer

Omental patch

Question 4

Bilateral subconjunctival ecchymosis is not associated with which of the following fractures?

Accepted Answer

Le-Fort I fracture

Answer

Le-Fort II fracture

Answer

Le-Fort III fracture

Answer

Naso ethmoidal complex fracture

Question 5

In the primary survey of a severely wounded patient, what does 'c' in the 'cABCDE' approach stand for?

Accepted Answer

Catastrophic haemorrhage

Answer

Care about surroundings

Answer

Call for help

Answer

Cardiac status

Question 6

A patient with a history of chest trauma presents to the emergency department with a BP of 90/70 mm Hg and a pulse rate of 120/min. The patient is observed to be short of breath, using accessory muscles of respiration. The JVP is not elevated. What is the most likely diagnosis?

Accepted Answer

Massive Hemothorax

Answer

Tension Pneumothorax

Answer

Cardiac Tamponade

Answer

None of the above

Question 7

A patient presents with breathlessness following a road traffic accident. Which of the following is the best method to differentiate between cardiac tamponade and tension pneumothorax?

Accepted Answer

Breathing sounds

Answer

Pulse pressure

Answer

Pulse volume

Answer

Jugular venous pressure (JVP)

Question 8

Which of the following statements about hemothorax are correct?

Accepted Answer

Thoracotomy is always done

Answer

Seen in choriocarcinoma

Answer

Supine posture is better than erect posture

Answer

Needle aspiration may be needed for diagnosis

Question 9

A deep injury of the neck always involves which of the following structures?

Accepted Answer

Platysma

Answer

Trapezius

Answer

Sternocleidomastoid

Answer

Longus colli

Question 10

A patient presents with necrotizing cellulitis after a bite on the leg. What is the ideal initial management?

Accepted Answer

Surgical exploration

Answer

MRI of the leg

Answer

CT of the leg

Answer

C-reactive protein estimation

Trauma — MCQs

Trauma — MCQs

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