Trauma Practice Questions

Q: A young boy sustains a head injury from being hit by a ball on the left side of his head, leading to a period of unconsciousness. He regains consciousness but becomes confused shortly after. Upon examination at the hospital, his left pupil is found to be dilated. NCCT head reveals specific findings. Which of the following marked structures on the NCCT head is most likely responsible for the observed left pupil dilation?

Structure B. ***Structure B*** - **Epidural hematoma** appears as a **biconvex hyperdense collection** on NCCT, typically caused by **middle meningeal artery rupture** following temporal bone fracture. - The expanding hematoma causes **uncal herniation** with compression of the **ipsilateral CN III**, leading to **pupil dilation** on the same side as the injury (left side). *Structure C* - This structure does not represent the characteristic **biconvex appearance** of an epidural hematoma that would cause mass effect. - Without the typical morphology and location, it cannot explain the **ipsilateral pupil dilation** and **uncal herniation** pattern. *Structure A* - This structure lacks the **classic biconvex shape** and anatomical position required to compress the **oculomotor nerve**. - The location and morphology are inconsistent with an **epidural hematoma** that would cause the described **CN III palsy**. *None of the above* - The clinical presentation of **lucid interval** followed by deterioration with **ipsilateral pupil dilation** is pathognomonic for **epidural hematoma**. - The **biconvex hyperdense collection** (Structure B) perfectly explains the **uncal herniation** and subsequent **CN III compression**.

Q: Isolated splenic or hepatic injury in a child is most commonly managed by?

Conservative management. **Explanation:** The management of solid organ injuries (spleen and liver) in children has shifted significantly toward **Non-Operative Management (NOM)** or conservative management. This is the gold standard for hemodynamically stable pediatric patients, regardless of the grade of injury. **Why Conservative Management is Correct:** Children have a more elastic rib cage, thicker splenic capsules, and more robust myofibroblasts in their solid organs, which facilitates spontaneous hemostasis. Furthermore, preserving the spleen is critical in children to avoid **Overwhelming Post-Splenectomy Infection (OPSI)** caused by encapsulated organisms. Success rates for NOM in pediatric splenic and hepatic injuries exceed 90-95%. **Why Other Options are Incorrect:** * **Laparotomy:** This is reserved only for patients with hemodynamic instability (refractory shock) or signs of peritonitis. Routine laparotomy increases morbidity and the risk of unnecessary organ removal. * **Interventional Radiology (Angioembolization):** While common in adults, it is used less frequently in children. It is considered an adjunct to conservative management rather than the primary "most common" mode of treatment. * **Splenectomy and Liver Packing:** These are "damage control" surgical procedures. Splenectomy is a last resort in children due to the lifelong risk of sepsis. **NEET-PG High-Yield Pearls:** * **Hemodynamic stability** is the single most important criteria for choosing NOM, not the CT grade of injury. * The **Spleen** is the most commonly injured organ in blunt abdominal trauma in children. * **Bed rest** and serial hemoglobin monitoring are the cornerstones of conservative management. * In children, the **Kehr’s sign** (referred left shoulder pain) is a classic indicator of splenic rupture/diaphragmatic irritation.

Q: What percentage of severe trauma is associated with extradural hematoma?

10%. **Explanation:** **Extradural Hematoma (EDH)** is a neurosurgical emergency characterized by bleeding between the inner table of the skull and the dura mater. In the context of severe head trauma (defined by a Glasgow Coma Scale score of <9), EDH is found in approximately **10%** of cases. While EDH is life-threatening, it is less common than Subdural Hematoma (SDH), which occurs in roughly 30% of severe head injuries. * **Why 10% is correct:** Large-scale trauma registries and neurosurgical studies (including the Traumatic Coma Data Bank) consistently show that EDH occurs in about 10% of patients with severe traumatic brain injury (TBI). It is most frequently associated with a skull fracture (80% of cases) that lacerates the **middle meningeal artery**. * **Why other options are incorrect:** * **36%:** This figure is closer to the incidence of Subdural Hematomas (SDH) or intraparenchymal contusions in severe TBI, which are significantly more common than EDH. * **77% and 96%:** These percentages are far too high for any single type of focal intracranial hematoma. These numbers might reflect the percentage of EDH patients who have an associated skull fracture, but not the incidence of EDH in trauma itself. **High-Yield Clinical Pearls for NEET-PG:** 1. **Source of Bleed:** Most common is the **Middle Meningeal Artery** (anterior division). In children, it can be venous (dural sinus). 2. **Classic Presentation:** The "Lucid Interval" (temporary improvement between the initial loss of consciousness and subsequent neurological deterioration) is characteristic but only present in about 20-30% of cases. 3. **CT Appearance:** Appears as a **Biconvex (Lentiform)**, hyperdense, extra-axial collection that does *not* cross skull sutures (but can cross venous sinuses). 4. **Management:** Urgent surgical evacuation (burr hole or craniotomy) is indicated if the volume is >30 cm³ or if there is a midline shift.

Q: A 42-year-old man involved in a house fire presents with singed nose hairs and facial burns. Direct laryngoscopy reveals pharyngeal edema and mucosal sloughing. He has 60% total body surface area burns. What is the next most appropriate step in managing this patient?

Intubation. **Explanation:** The primary concern in this patient is an **inhalation injury** with impending airway obstruction. In burn victims, the presence of "hard signs" such as **singed nasal hairs, facial burns, pharyngeal edema, and mucosal sloughing** indicates a high risk of rapid upper airway swelling. 1. **Why Intubation is Correct:** Airway edema in thermal injuries can progress rapidly over minutes to hours. Once the airway is lost due to massive swelling, intubation becomes technically impossible, necessitating a surgical airway. Therefore, **prophylactic endotracheal intubation** is the gold standard when clinical signs of inhalation injury or pharyngeal edema are present, especially in large TBSA burns (60%) where massive fluid resuscitation will further worsen tissue edema. 2. **Why Incorrect Options are Wrong:** * **Hyperbaric Oxygen (A):** While used for Carbon Monoxide (CO) poisoning, it does not secure the airway. Airway stabilization always takes priority (ABCDE). * **Steroids (B & C):** Both IV and inhaled steroids have no proven role in managing acute thermal airway injury. In fact, systemic steroids are generally avoided in major burns as they increase the risk of secondary infections and impair wound healing. **High-Yield Clinical Pearls for NEET-PG:** * **Indications for early intubation in burns:** Stridor (late sign), hoarseness, use of accessory muscles, oropharyngeal blisters/edema, and deep burns to the face/neck. * **Diagnosis:** Flexible fiberoptic bronchoscopy is the gold standard for diagnosing inhalation injury below the vocal cords. * **Rule of 9s:** Remember that 60% TBSA is a major burn requiring aggressive Parkland formula resuscitation, which itself contributes to airway edema. * **CO Poisoning:** Always suspect this in closed-space fires; treat with 100% humidified oxygen via a non-rebreather mask.

Q: Characteristic features of superficial burns are all, except:

Pinprick is not painful. In burns management, distinguishing between superficial and deep burns is critical for determining treatment and prognosis. **Explanation of the Correct Answer:** **Option D (Pinprick is not painful)** is the correct answer because it is **false** for superficial burns. Superficial burns (including First-degree and Superficial Partial-thickness/Second-degree burns) involve the epidermis and the papillary dermis. In these layers, the sensory nerve endings remain intact and hypersensitive. Therefore, these burns are **exquisitely painful** to touch, air, and pinprick. Loss of pain sensation (anaesthesia) only occurs in deep-partial or full-thickness burns where the nerve plexuses in the reticular dermis are destroyed. **Analysis of Incorrect Options:** * **Option A:** Superficial partial-thickness burns specifically involve the epidermis and the **papillary (superficial) dermis**, sparing the deeper reticular dermis. * **Option B:** While first-degree burns (e.g., sunburn) do not have blisters, superficial partial-thickness burns often present with thin-walled, fluid-filled **blisters**. However, in the context of this "except" question, the presence of pain is the definitive clinical discriminator. * **Option C:** By definition, any burn beyond a first-degree injury involves the **loss or separation of the epidermis** from the underlying dermis. **NEET-PG High-Yield Pearls:** * **Capillary Refill:** Present and brisk in superficial burns; absent in deep/full-thickness burns. * **Healing:** Superficial burns typically heal within 7–14 days with minimal scarring. * **Jackson’s Zones of Thermal Injury:** Zone of Coagulation (irreversible necrosis), Zone of Stasis (potentially salvageable), and Zone of Hyperemia (will recover). * **Rule of 9s:** Remember that first-degree burns (simple erythema) are **not** included in the Total Body Surface Area (TBSA) calculation for fluid resuscitation.

Q: A patient with a history of fall presents weeks later with headache and progressive neurological deterioration. What is the diagnosis?

Chronic subdural hemorrhage. **Explanation:** **Correct Answer: C. Chronic Subdural Hemorrhage (cSDH)** The hallmark of Chronic Subdural Hemorrhage is a **latent period** (weeks to months) between a relatively minor head injury (like a fall) and the onset of symptoms [1]. This occurs due to the tearing of **bridging veins** in the subdural space [2]. In elderly patients or those with brain atrophy, the brain shrinks away from the skull, stretching these veins and making them prone to rupture [1]. Over time, the hematoma liquefies and expands due to recurrent micro-bleeding from the friable neo-membrane, leading to progressive headache, confusion, or focal deficits [1]. **Why other options are incorrect:** * **A. Acute Subdural Hemorrhage:** This presents immediately (within 24–72 hours) after high-impact trauma [2]. It is associated with high mortality and appears as a hyperdense (white) crescent on CT [1]. * **B. Extradural Hemorrhage (EDH):** Typically follows trauma to the temple (middle meningeal artery tear). It presents with a classic **"Lucid Interval"** (minutes to hours), followed by rapid deterioration. It appears biconvex/lens-shaped on CT. * **D. Fracture Skull:** While a fracture may coexist with trauma, it is a bony injury and does not inherently explain "progressive neurological deterioration" weeks later without an underlying intracranial bleed. **NEET-PG High-Yield Pearls:** * **CT Appearance:** cSDH appears as a **hypodense (dark) crescentic** collection that crosses suture lines but not dural attachments [1]. * **Risk Factors:** Elderly, chronic alcoholics (due to brain atrophy), and patients on anticoagulants [1], [2]. * **Clinical Mimic:** Often called the **"Great Imitator"** because it can mimic dementia, TIA, or a brain tumor in the elderly. * **Management:** Symptomatic cSDH is typically treated with **burr-hole evacuation**.

Q: Heimlich valve is used for the drainage of which of the following conditions?

Pneumothorax. **Explanation:** The **Heimlich valve** (also known as a flutter valve) is a small, one-way valve designed specifically for the management of **Pneumothorax**. **1. Why Pneumothorax is correct:** The valve consists of a rubber sleeve inside a plastic casing. It functions on a simple pressure gradient: it opens during expiration (when intrapleural pressure increases), allowing air to escape the pleural space, and collapses during inspiration (when intrapleural pressure becomes negative), preventing air from re-entering. Its primary advantage is **portability**, allowing patients with a simple or stable pneumothorax to be managed as outpatients without the need for a bulky underwater seal bottle. **2. Why other options are incorrect:** * **Malignant Pleural Effusion:** These require drainage of large fluid volumes or pleurodesis. Heimlich valves are prone to clogging with proteinaceous fluid. * **Hemothorax:** Blood is viscous and tends to clot. A Heimlich valve would quickly become obstructed by blood clots, leading to a tension physiology. * **Empyema:** Thick pus and debris in empyema will clog the narrow flutter valve. These conditions require large-bore chest tubes and often underwater seal drainage or decortication. **Clinical Pearls for NEET-PG:** * **Directionality:** Always ensure the valve is connected in the correct direction (arrow pointing away from the patient); connecting it backward can cause a fatal **tension pneumothorax**. * **Indication:** Ideal for "walking" patients or during emergency transport (e.g., field trauma or air ambulance) because it functions regardless of the device's position relative to the patient. * **Limitation:** It is **not** used for fluid drainage (effusions/blood) as the rubber leaves will stick together, failing the one-way mechanism.

Question 1

A young boy sustains a head injury from being hit by a ball on the left side of his head, leading to a period of unconsciousness. He regains consciousness but becomes confused shortly after. Upon examination at the hospital, his left pupil is found to be dilated. NCCT head reveals specific findings. Which of the following marked structures on the NCCT head is most likely responsible for the observed left pupil dilation?

Accepted Answer

Structure B

Answer

Structure C

Answer

Structure A

Answer

None of the above

Question 2

Isolated splenic or hepatic injury in a child is most commonly managed by?

Accepted Answer

Conservative management

Answer

Laparotomy

Answer

Interventional radiology

Answer

Splenectomy and liver packing

Question 3

What percentage of severe trauma is associated with extradural hematoma?

Accepted Answer

10%

Answer

36%

Answer

77%

Answer

96%

Question 4

A patient with a head injury presents with a Glasgow Coma Scale of 8, a mid-face fracture, cyanosis, decreased breathing with frequent apnea, and hypoxia. What is the most appropriate method for airway maintenance?

Accepted Answer

Cricothyrotomy

Answer

Oropharyngeal airway

Answer

Orotracheal airway

Answer

Nasotracheal airway

Question 5

A patient is in shock with a gross comminuted fracture. What is the immediate treatment?

Accepted Answer

Ringer's lactate solution

Answer

Normal saline

Answer

Whole blood

Answer

Plasma expanders

Question 6

Injury to the aorta causing aortic rupture is most commonly seen in which of the following scenarios?

Accepted Answer

Car driver

Answer

Pedestrian

Answer

Motorcyclist

Answer

Person accompanying car driver

Question 7

A 42-year-old man involved in a house fire presents with singed nose hairs and facial burns. Direct laryngoscopy reveals pharyngeal edema and mucosal sloughing. He has 60% total body surface area burns. What is the next most appropriate step in managing this patient?

Accepted Answer

Intubation

Answer

Hyperbaric oxygen

Answer

Intravenous steroids

Answer

Inhaled steroids

Question 8

Characteristic features of superficial burns are all, except:

Accepted Answer

Pinprick is not painful

Answer

Damage no deeper than papillary dermis

Answer

Blisters absent

Answer

Loss of epidermis

Question 9

A patient with a history of fall presents weeks later with headache and progressive neurological deterioration. What is the diagnosis?

Accepted Answer

Chronic subdural hemorrhage

Answer

Acute subdural hemorrhage

Answer

Extradural hemorrhage

Answer

Fracture skull

Question 10

Heimlich valve is used for the drainage of which of the following conditions?

Accepted Answer

Pneumothorax

Answer

Malignant pleural effusion

Answer

Hemothorax

Answer

Empyema

Trauma — MCQs

Trauma — MCQs

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