Trauma Practice Questions

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.

Q: Under which category would you classify this injury?

Degloving. ***Degloving*** - A **degloving injury** occurs when skin and subcutaneous tissue are forcibly separated from underlying structures, creating a **flap-like appearance** with exposed deeper tissues. - Typically caused by **shearing forces** in trauma, such as motor vehicle accidents or machinery injuries, requiring immediate **surgical intervention** for tissue viability assessment. *Bites* - **Animal or human bites** create **punctate wounds** with characteristic **tooth mark patterns** and potential for deep tissue penetration. - Associated with high risk of **infection** due to oral flora contamination, but do not typically cause large tissue separation. *Puncture wounds* - **Small, deep wounds** caused by sharp, narrow objects like nails or needles, creating a **small entrance point**. - Characterized by **minimal external bleeding** but potential for deep structure injury, unlike the extensive tissue separation seen in degloving. *Hematoma* - A **localized collection of blood** beneath the skin, appearing as a **raised, discolored area** without open wounds. - Results from **blunt trauma** causing vessel rupture but maintains **intact skin integrity**, contrasting with the tissue separation in degloving injuries.

Q: After trauma, hypovolemic shock can be due to all EXCEPT:

Head injury. **Explanation:** The core principle in trauma management is that **isolated head injury does not cause hypovolemic shock.** The cranial vault is a rigid, enclosed space; the volume of blood required to cause hemorrhagic shock (typically >15-30% of total blood volume) cannot accumulate inside the skull without causing fatal brain herniation first. If a patient with a head injury is in shock, the clinician must look for an extracranial source of bleeding. * **Option A (Correct):** While head injuries cause neurological deficits or "Neurogenic shock" (rarely, and usually associated with spinal cord injury), they do not cause hypovolemia. The only exception is in infants, where the open fontanelles allow enough blood to accumulate to cause shock. * **Option B:** Blunt trauma to abdominal viscera (e.g., splenic or liver laceration) is a classic cause of massive intraperitoneal hemorrhage leading to hypovolemic shock. * **Option C:** Each hemithorax can hold up to 1.5–2 liters of blood. A massive hemothorax is a common cause of rapid hemorrhagic shock. * **Option D:** Pelvic fractures, especially "open book" types, can lead to extensive retroperitoneal bleeding (often 2 liters or more), making it a major source of hypovolemia. **Clinical Pearls for NEET-PG:** * **The "Fatal Five" areas of hemorrhage:** Chest, Abdomen, Pelvis/Retroperitoneum, Long bones (Femur), and "The Floor" (external bleeding). * **Cushing’s Triad:** In head injuries with increased ICP, you see **Hypertension** and Bradycardia—the opposite of the hypotension and tachycardia seen in hypovolemic shock. * **Rule of Thumb:** If a trauma patient is hypotensive, it is **hemorrhagic shock** until proven otherwise.

Q: A patient involved in a road traffic accident presents with a pulse rate of 96 beats per minute, a systolic blood pressure of 68 mmHg, and a respiratory rate of 20 breaths per minute. The patient is confused. What is the likely percentage of blood loss?

35%. This question tests your knowledge of the **ATLS (Advanced Trauma Life Support) Classification of Hemorrhagic Shock**, a high-yield topic for NEET-PG. ### **1. Why Option C (35%) is Correct** The patient is in **Class III Hemorrhage** (1500–2000 mL or **30–40% blood loss**). The key clinical indicators in this scenario are: * **Blood Pressure:** Hypotension (SBP <90 mmHg) is the hallmark of Class III shock. In Classes I and II, compensatory mechanisms maintain a normal SBP. * **Mental Status:** The patient is **confused**. Class I and II patients are usually alert or slightly anxious; confusion signifies significant cerebral hypoperfusion. * **Heart Rate:** While the pulse is 96 bpm (borderline), the presence of hypotension and confusion overrides the heart rate in staging. ### **2. Why Other Options are Incorrect** * **Option A (15%):** Corresponds to **Class I**. Vital signs (BP, HR, RR) are typically normal, and the patient is alert. * **Option B (25%):** Corresponds to **Class II** (15–30%). While tachycardia and narrowed pulse pressure occur, the **systolic BP remains normal**. The patient is usually only anxious. * **Option D (45%):** Corresponds to **Class IV** (>40%). This is pre-terminal. The patient would be lethargic/comatose, with severe tachycardia (>140) and negligible urine output. ### **3. NEET-PG High-Yield Pearls** * **Earliest Sign of Shock:** Tachycardia (except in Class I). * **Earliest Change in Vital Signs:** Narrowed Pulse Pressure (seen in Class II). * **The "Rule of 70/80/90":** If you can feel a radial pulse, SBP is at least 80 mmHg; femoral is 70; carotid is 60 (Traditional teaching, though ATLS now emphasizes clinical shock over specific numbers). * **Management:** Class I & II usually require crystalloids; **Class III & IV require blood transfusion.**

Question 1

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 2

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 3

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 4

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 5

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 6

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 7

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

Accepted Answer

Pneumothorax

Answer

Malignant pleural effusion

Answer

Hemothorax

Answer

Empyema

Question 8

Under which category would you classify this injury?

Accepted Answer

Degloving

Answer

Bites

Answer

Puncture wounds

Answer

Hematoma

Question 9

After trauma, hypovolemic shock can be due to all EXCEPT:

Accepted Answer

Head injury

Answer

Blunt trauma to abdominal viscera

Answer

Hemothorax

Answer

Pelvic fracture

Question 10

A patient involved in a road traffic accident presents with a pulse rate of 96 beats per minute, a systolic blood pressure of 68 mmHg, and a respiratory rate of 20 breaths per minute. The patient is confused. What is the likely percentage of blood loss?

Accepted Answer

35%

Answer

15%

Answer

25%

Answer

45%

Trauma — MCQs

Trauma — MCQs

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