Trauma Practice Questions

Q: Basilar skull fracture with Battle's sign: What are the clinical signs and the at-risk nerve?

Bruising behind ears, CSF otorrhea; Facial nerve. ***Bruising behind ears, CSF otorrhea; Facial nerve*** - **Battle's sign** is periauricular **ecchymosis** appearing hours to days after trauma, indicating a basilar skull fracture. **CSF otorrhea**, leakage of cerebrospinal fluid from the ear, also signifies penetration of the tympanic membrane associated with a temporal bone fracture. - The **facial nerve (CN VII)** passes through the temporal bone and is commonly injured in basilar skull fractures affecting this region, leading to facial paralysis. *Bruising around eyes, CSF rhinorrhea; Optic nerve* - **Raccoon eyes** (periorbital ecchymosis) and **CSF rhinorrhea** (CSF leakage from the nose) are indeed signs of a basilar skull fracture, particularly involving the anterior cranial fossa. - However, the **optic nerve (CN II)** is typically not directly at risk from these types of fractures unless there is severe trauma directly impinging on the optic canal, and the question specifically asks for the at-risk nerve in the context of Battle's sign and CSF otorrhea. *Blood in sclera, anosmia; Olfactory nerve* - **Subconjunctival hemorrhage** (blood in sclera) can be a sign of head trauma but is less specific for a basilar skull fracture than Battle's sign or Raccoon eyes. - **Anosmia** (loss of smell) and injury to the **olfactory nerve (CN I)** are associated with fractures of the cribriform plate in the anterior cranial fossa, not typically with the temporal bone fractures causing Battle's sign or CSF otorrhea. *Hearing loss, swallowing difficulty; Glossopharyngeal nerve* - **Hearing loss** can occur with temporal bone fractures due to damage to the ossicles or inner ear structures, but it is a symptom, not a specific sign like Battle's sign. - **Swallowing difficulty** and injury to the **glossopharyngeal nerve (CN IX)** are rare complications of basilar skull fractures and are primarily associated with fractures near the jugular foramen.

Q: A 20-year-old male involved in a motor vehicle accident presents with facial asymmetry and trismus. A CT scan shows a fracture of the zygomatic arch. What is the best treatment approach?

Minimally invasive zygomatic arch elevation. ***Minimally invasive zygomatic arch elevation*** - This technique is suitable for **isolated zygomatic arch fractures** without significant displacement of the zygomatic body, which often present with **facial asymmetry** and **trismus**. - It involves using a hook or other instruments inserted through a small incision to elevate and restore the arch to its anatomical position. *Closed reduction* - While closed reduction can be used for some fractures, it is generally less effective for **zygomatic arch fractures** that lead to significant **trismus** and asymmetry due to lack of stable fixation. - This method carries a higher risk of **re-displacement** and suboptimal cosmetic and functional outcomes compared to arch elevation. *Open reduction and internal fixation* - This approach is typically reserved for more complex fractures, such as **tripod (zygomaticomaxillary complex) fractures**, or significantly displaced zygomatic body fractures with involvement of multiple suture lines. - ORIF is generally **overkill** for an isolated, less comminuted zygomatic arch fracture and carries risks of larger incisions, more extensive dissection, and potential plate palpability. *Jaw wiring* - **Jaw wiring**, or maxillomandibular fixation (MMF), is primarily used for **mandibular fractures** to immobilize the jaw and facilitate bony healing. - It is not an appropriate treatment for **zygomatic arch fractures**, as it does not address the displacement of the zygoma or the impingement on the coronoid process causing trismus.

Q: A 35-year-old patient presents with sudden loss of vision following blunt trauma to the eye. Imaging reveals a fracture of the orbital floor with entrapment of the inferior rectus muscle. What is the most appropriate next step?

Immediate surgical intervention. ***Immediate surgical intervention*** - **Sudden vision loss** combined with **muscle entrapment** represents a **surgical emergency** requiring immediate intervention. - Vision loss may indicate **orbital compartment syndrome**, **retrobulbar hemorrhage**, or **optic nerve compromise** requiring urgent decompression. - **Entrapment of the inferior rectus muscle** in an orbital floor fracture can lead to **ischemic necrosis** and permanent diplopia if not released promptly. - The combination of **visual compromise** and **mechanical entrapment** mandates urgent surgical exploration and repair. *Observation and follow-up* - This approach is reserved for **nondisplaced fractures** with **no muscle entrapment** and **no visual disturbances**. - Given the patient's **sudden vision loss** and **confirmed muscle entrapment**, observation would risk **irreversible vision loss** and permanent damage. - Delaying surgery increases the risk of **fibrosis** and poor functional outcomes. *Topical corticosteroids* - **Topical corticosteroids** manage **superficial inflammation** but do not address **orbital compartment syndrome** or **structural damage**. - They have no role in treating **mechanical entrapment** or **vision-threatening complications** of orbital fractures. *Laser photocoagulation* - **Laser photocoagulation** is used for **retinal pathology** such as tears, diabetic retinopathy, or retinal vein occlusion. - This procedure is completely irrelevant to **orbital bone fractures** and **muscle entrapment**.

Q: A patient with a history of head trauma presents with cerebrospinal fluid rhinorrhea. What is the most appropriate management?

Observation. ***Observation (Conservative management)*** - **Initial management** of post-traumatic CSF rhinorrhea is conservative, as **80-85% of cases resolve spontaneously** within 7-10 days. - Conservative measures include **bed rest, head elevation (30-45 degrees)**, avoidance of straining, nose blowing, and Valsalva maneuvers. - A **lumbar drain** may be placed to reduce CSF pressure and promote dural healing. - Surgical intervention is reserved for leaks **persisting beyond 2 weeks** or high-flow leaks that fail conservative management. *Surgical repair* - Indicated only for **persistent CSF leaks** (>2 weeks), high-flow leaks, or recurrent leaks after conservative management. - Not the **first-line approach** as most traumatic CSF rhinorrhea resolves without surgery. - Approaches include endoscopic or transcranial repair depending on the location and size of the defect. *Antibiotics* - **Prophylactic antibiotics are NOT recommended** for CSF rhinorrhea due to lack of evidence for benefit and risk of promoting resistant organisms. - Antibiotics should only be given if there is evidence of **active meningitis or infection**. - The risk of meningitis is approximately 10-25% with persistent leaks, reinforcing the need for definitive management if conservative measures fail. *Nasal packing* - **Contraindicated** in CSF rhinorrhea as it can increase intracranial pressure, worsen the leak, and introduce infection risk. - Does not address the underlying **dural defect** and may impede natural healing.

Q: A 40-year-old woman sustains a 20% total body surface area burn. She presents with hypotension and tachycardia. What is the most appropriate initial fluid therapy?

Lactated Ringer's. ***Lactated Ringer's*** - **Lactated Ringer's solution** is the **resuscitation fluid of choice** for burn patients per the **Parkland formula** - Its composition is similar to **extracellular fluid**, effectively restoring fluid and electrolyte balance - Contains **lactate** which is metabolized in the liver to **bicarbonate**, helping counteract the **mild acidosis** often seen in burn patients - Isotonic crystalloid that provides adequate **intravascular volume expansion** in hypovolemic shock *Incorrect: D5W* - **D5W (5% Dextrose in Water)** is a **hypotonic solution** that primarily distributes into the **intracellular compartment** - Does not effectively expand intravascular volume necessary for resuscitation - Inappropriate for patients with **significant burns and hypovolemia** requiring urgent volume replacement *Incorrect: Normal saline* - While **normal saline (0.9% NaCl)** is an isotonic crystalloid, large volumes lead to **hyperchloremic metabolic acidosis** due to high chloride content (154 mEq/L) - Can exacerbate existing acidosis in burn patients - Less physiologically balanced than Lactated Ringer's for burn resuscitation *Incorrect: Plasma* - **Plasma** is a colloid solution **not used for initial fluid resuscitation** in the acute burn phase - Reserved for specific situations: **severe hypoproteinemia** or **coagulation factor deficiencies** - Carries risks including **allergic reactions** and **transfusion-related acute lung injury (TRALI)** - Not part of standard burn resuscitation protocols

Q: In trauma surgery, what is the primary concern when a patient presents with hard signs of vascular injury?

Surgical exploration and possible vascular repair. ***Surgical exploration and possible vascular repair*** - The presence of **hard signs of vascular injury** (e.g., pulsatile bleeding, rapidly expanding hematoma, thrill, bruit, absent pulses distal to injury) indicates an acute, limb-threatening or life-threatening situation requiring **immediate surgical intervention**. - **Surgical exploration** allows for direct visualization, control of bleeding, and **definitive repair** of the damaged vessel, which is crucial to prevent ischemia, hemorrhage, and subsequent limb loss or patient demise. *Immediate administration of anticoagulants* - Administering **anticoagulants** in the setting of acute vascular trauma with active bleeding is **contraindicated** as it would exacerbate hemorrhage, leading to significant blood loss and hemodynamic instability. - Anticoagulation is typically used in situations to prevent clot formation, not to manage active vascular injury. *Ultrasound assessment of the affected limb* - While **ultrasound** can be useful for diagnosing vascular injuries, in the presence of **hard signs**, it is generally **not the primary initial step** because it delays definitive treatment. - The urgency of hard signs necessitates immediate surgical intervention, and confirmatory imaging like ultrasound should only be considered if it does not delay transfer to the operating room. *Observation and reassessment in 24 hours* - **Observation** for a patient with **hard signs of vascular injury** is **highly inappropriate** and dangerous, as these signs indicate an active, critical condition. - Delaying intervention by 24 hours would likely result in irreversible **ischemic damage**, limb loss, or potentially fatal hemorrhage.

Q: A 28-year-old male presents with a crush injury to the leg. His leg is swollen, and he experiences severe pain with passive stretching of the toes. What is the next best step in management?

Immediate fasciotomy. ***Immediate fasciotomy*** - The combination of a **crush injury**, **swollen leg**, and **severe pain with passive stretching of the toes** is highly indicative of **acute compartment syndrome**, which requires immediate surgical intervention to prevent irreversible tissue damage. - A fasciotomy rapidly relieves pressure within the muscle compartments, restoring blood flow and saving threatened muscle and nerve tissue. *MRI of the leg* - While an MRI can provide detailed images of soft tissues, it is a time-consuming diagnostic tool that would delay critical treatment for acute compartment syndrome. - The clinical presentation is sufficiently clear to proceed directly to surgical management. *Elevation of the limb* - In suspected **acute compartment syndrome**, the limb should be kept at **heart level** to optimize perfusion pressure. - Elevating the limb above heart level can reduce arterial inflow and potentially worsen ischemia, while keeping it dependent can increase venous pressure and compartment pressure. - This is not a definitive treatment and delays the necessary surgical intervention. *Administer IV antibiotics* - Although crush injuries carry a risk of infection, antibiotics are not the primary or immediate treatment for the life-threatening condition of **acute compartment syndrome**. - Delaying surgical decompression to administer antibiotics would result in irreversible muscle and nerve damage.

Question 1

Basilar skull fracture with Battle's sign: What are the clinical signs and the at-risk nerve?

Accepted Answer

Bruising behind ears, CSF otorrhea; Facial nerve

Answer

Bruising around eyes, CSF rhinorrhea; Optic nerve

Answer

Blood in sclera, anosmia; Olfactory nerve

Answer

Hearing loss, swallowing difficulty; Glossopharyngeal nerve

Question 2

A 20-year-old male involved in a motor vehicle accident presents with facial asymmetry and trismus. A CT scan shows a fracture of the zygomatic arch. What is the best treatment approach?

Accepted Answer

Minimally invasive zygomatic arch elevation

Answer

Closed reduction

Answer

Jaw wiring

Answer

Open reduction and internal fixation

Question 3

A 35-year-old patient presents with sudden loss of vision following blunt trauma to the eye. Imaging reveals a fracture of the orbital floor with entrapment of the inferior rectus muscle. What is the most appropriate next step?

Accepted Answer

Immediate surgical intervention

Answer

Observation and follow-up

Answer

Topical corticosteroids

Answer

Laser photocoagulation

Question 4

What is the primary goal of using a damage control surgery approach in a trauma patient with multiple life-threatening injuries?

Accepted Answer

To stabilize the patient by controlling bleeding and contamination

Answer

To definitively repair all injuries in one operation

Answer

To perform all possible surgeries back-to-back

Answer

To delay surgery until the patient is transferred to a specialized center

Question 5

A patient with a history of head trauma presents with cerebrospinal fluid rhinorrhea. What is the most appropriate management?

Accepted Answer

Observation

Answer

Antibiotics

Answer

Surgical repair

Answer

Nasal packing

Question 6

A 40-year-old woman sustains a 20% total body surface area burn. She presents with hypotension and tachycardia. What is the most appropriate initial fluid therapy?

Accepted Answer

Lactated Ringer's

Answer

D5W

Answer

Normal saline

Answer

Plasma

Question 7

What is the most appropriate initial management for a polytrauma patient with both a pneumothorax and a pelvic fracture?

Accepted Answer

Chest tube placement followed by pelvic fixation

Answer

Pelvic fixation followed by chest tube placement

Answer

Simultaneous chest tube and pelvic fixation

Answer

Conservative management for both

Question 8

A 40-year-old male with a head injury presents with a GCS of 8, BP of 90/60, and HR of 120. A CT scan shows an epidural hematoma. What are the immediate management priorities?

Accepted Answer

Intubation and ventilation

Answer

Administer mannitol for intracranial pressure management

Answer

Perform immediate craniotomy

Answer

Administer intravenous fluids and monitor vital signs

Question 9

In trauma surgery, what is the primary concern when a patient presents with hard signs of vascular injury?

Accepted Answer

Surgical exploration and possible vascular repair

Answer

Immediate administration of anticoagulants

Answer

Ultrasound assessment of the affected limb

Answer

Observation and reassessment in 24 hours

Question 10

A 28-year-old male presents with a crush injury to the leg. His leg is swollen, and he experiences severe pain with passive stretching of the toes. What is the next best step in management?

Accepted Answer

Immediate fasciotomy

Answer

MRI of the leg

Answer

Elevation of the limb

Answer

Administer IV antibiotics

Trauma — MCQs

Trauma — MCQs

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