A patient presents to the casualty following blunt trauma to the chest. A chest X-ray was done. Among the following radiographs, in which case would you further evaluate the patient before putting a chest tube?
1. Diaphragmatic hernia
2. Hemothorax
3. Pneumothorax
4. Flail chest
Q802
A patient presents with pneumothorax on chest x-ray. Which of the following is NOT a boundary of the triangle of safety for intercostal chest drain (ICD) insertion?
Q803
What is the correct sequence of management in a patient who presents to the casualty with an RTA?
1. Cervical spine stabilization
2. Intubation
3. IV cannulation
4. CECT
Q804
Which of these is the most life-threatening injury that can be identified by assessing the breathing component of the patient?
Q805
What should be done as an immediate measure for ongoing bleeding in a patient with pelvic bone fracture?
Q806
A 26 year old male patient was brought to the emergency department with abdominal pain and obstipation for 3 days. He gives a history of bull gore to the abdomen 3 days back. His chest X-ray is given below. What is the probable diagnosis?
Q807
Which of the following findings appear late in compartment syndrome?
Q808
A 36-year-old woman is brought to the emergency department 20 minutes after being involved in a high-speed motor vehicle collision. On arrival, she is unconscious. Her pulse is 140/min, respirations are 12/min and shallow, and blood pressure is 76/55 mm Hg. 0.9% saline infusion is begun. A focused assessment with sonography shows blood in the left upper quadrant of the abdomen. Her hemoglobin concentration is 7.6 g/dL and hematocrit is 22%. The surgeon decided to move the patient to the operating room for an emergent explorative laparotomy. Packed red blood cell transfusion is ordered prior to surgery. However, a friend of the patient asks for the transfusion to be held as the patient is a Jehovah's Witness. The patient has no advance directive and there is no documentation showing her refusal of blood transfusions. The patient's husband and children cannot be contacted. Which of the following is the most appropriate next best step in management?
Q809
A 24-year-old man is rushed to the emergency room after he was involved in a motor vehicle accident. He says that he is having difficulty breathing and has right-sided chest pain, which he describes as 8/10, sharp in character, and worse with deep inspiration. His vitals are: blood pressure 90/65 mm Hg, respiratory rate 30/min, pulse 120/min, temperature 37.2°C (99.0°F). On physical examination, patient is alert and oriented but in severe distress. There are multiple bruises over the anterior chest wall. There is also significant jugular venous distention and the presence of subcutaneous emphysema at the base of the neck. There is an absence of breath sounds on the right and hyperresonance to percussion. A bedside chest radiograph shows evidence of a collapsed right lung with a depressed right hemidiaphragm and tracheal deviation to the left. Which of the following findings is the strongest indicator of cardiogenic shock in this patient?
Q810
A 56-year-old man is brought to the emergency department 30 minutes after falling from a height of 3 feet onto a sharp metal fence pole. He is unconscious. Physical examination shows a wound on the upper margin of the right clavicle in the parasternal line that is 3-cm-deep. Which of the following is the most likely result of this patient's injury?
Trauma Indian Medical PG Practice Questions and MCQs
Question 801: A patient presents to the casualty following blunt trauma to the chest. A chest X-ray was done. Among the following radiographs, in which case would you further evaluate the patient before putting a chest tube?
1. Diaphragmatic hernia
2. Hemothorax
3. Pneumothorax
4. Flail chest
A. Flail chest
B. Pneumothorax
C. Diaphragmatic hernia (Correct Answer)
D. Hemothorax
Explanation: ***Correct Option: Diaphragmatic hernia***
- A **diaphragmatic hernia** (showing elevated hemidiaphragm with loops of bowel in the hemithorax) requires **further evaluation before chest tube placement**
- **CT scan with contrast** or **nasogastric tube with X-ray** should be performed to delineate the anatomy and confirm herniated abdominal contents
- **Chest tube placement is contraindicated** or requires extreme caution as it could perforate herniated abdominal organs (stomach, bowel, liver, spleen)
- This condition requires **surgical repair**, not chest drainage
- The key principle: **Always evaluate thoroughly before intervention when diaphragmatic injury is suspected**
*Incorrect Option: Pneumothorax*
- A **pneumothorax** (characterized by absence of lung markings in the periphery and visceral pleural line) has a straightforward indication for chest tube
- **Chest tube is the definitive management** for significant or symptomatic pneumothorax to re-expand the lung
- No additional evaluation needed before chest tube placement in hemodynamically stable patients with confirmed pneumothorax
*Incorrect Option: Hemothorax*
- A **hemothorax** (showing opacification in the lower lung field with blunting of costophrenic angle and fluid level) has a clear indication for chest tube
- **Chest tube is indicated** to drain blood, relieve lung compression, and monitor for ongoing bleeding
- Immediate chest tube placement is appropriate once diagnosed
*Incorrect Option: Flail chest*
- A **flail chest** (multiple rib fractures in two or more places creating unstable chest wall segment) primarily requires **pain management and ventilatory support**
- A chest tube is **not indicated for flail chest itself** unless there is an associated pneumothorax or hemothorax
- If flail chest is isolated, you would not place a chest tube at all, making this option incorrect for the question asked
Question 802: A patient presents with pneumothorax on chest x-ray. Which of the following is NOT a boundary of the triangle of safety for intercostal chest drain (ICD) insertion?
A. Base of axilla
B. Mid - clavicular line (Correct Answer)
C. Lateral border of latissimus dorsi
D. Lateral edge of pectoralis major
Explanation: ***Mid-clavicular line***
- The **mid-clavicular line** is **NOT** a boundary of the triangle of safety; it is a vertical reference line located centrally on the thorax.
- The triangle of safety is located in the **mid-axillary region**, not at the mid-clavicular line.
- The mid-clavicular line is used for other procedures but is **anterior to the safe zone** for ICD insertion.
*Base of axilla*
- The **base of the axilla** forms the **superior boundary** of the triangle of safety.
- This boundary is typically at the level of the **5th intercostal space** (nipple level in males).
- It helps guide ICD insertion away from the **brachial plexus** and axillary vessels.
*Lateral border of latissimus dorsi*
- The **lateral border of the latissimus dorsi muscle** forms the **posterior boundary** of the triangle of safety.
- This landmark ensures the insertion is anterior to major back muscles and avoids injury to the long thoracic nerve.
*Lateral edge of pectoralis major*
- The **lateral edge of the pectoralis major muscle** forms the **anterior boundary** of the triangle of safety.
- This ensures the ICD is inserted lateral to the pectoral muscle, avoiding breast tissue and superficial vessels.
Question 803: What is the correct sequence of management in a patient who presents to the casualty with an RTA?
1. Cervical spine stabilization
2. Intubation
3. IV cannulation
4. CECT
A. 2,1,4,3
B. 1,3,2,4
C. 2,1,3,4
D. 1,2,3,4 (Correct Answer)
Explanation: ***1,2,3,4***
- This sequence follows the **ATLS (Advanced Trauma Life Support)** protocol, prioritizing immediate life threats in order.
- **Cervical spine stabilization** is the **first action upon patient contact** to prevent secondary neurological injury in any trauma patient.
- **Airway management (intubation)** is then performed **with maintained in-line c-spine stabilization** - these occur nearly simultaneously but c-spine protection is instituted first.
- **IV cannulation (circulation)** follows to establish vascular access for resuscitation and medications.
- **CECT (imaging)** is performed last, once the patient is stabilized after addressing immediate life threats.
- This follows the **ATLS Primary Survey: Airway (with c-spine protection) → Breathing → Circulation → Disability → Exposure**.
*2,1,4,3*
- This incorrectly places intubation **before** cervical spine stabilization is initiated.
- In ATLS, **c-spine protection must be applied immediately upon patient contact** before any airway manipulation.
- Delaying IV cannulation until after CECT is inappropriate as circulatory access is critical for early resuscitation.
*1,3,2,4*
- While this correctly starts with cervical spine stabilization, it incorrectly places **IV cannulation before intubation**.
- In the ATLS primary survey, **Airway comes before Circulation** - securing the airway takes priority over establishing IV access.
- This sequence could delay critical airway management in a patient with respiratory compromise.
*2,1,3,4*
- This sequence places **intubation before cervical spine stabilization**, which violates ATLS principles.
- **C-spine stabilization must be the first action** upon approaching any trauma patient to prevent secondary spinal cord injury.
- While intubation with in-line stabilization is possible, the c-spine protection must be instituted first, not after beginning airway manipulation.
Question 804: Which of these is the most life-threatening injury that can be identified by assessing the breathing component of the patient?
A. Blunt cardiac injury
B. Tension pneumothorax (Correct Answer)
C. Cervical spine injury
D. Laryngotracheal injury
Explanation: ***Tension pneumothorax***
- A tension pneumothorax is a **life-threatening condition** identified during the breathing assessment, as it severely impairs ventilation and causes **hemodynamic instability** by compressing major vessels.
- Key signs include absent breath sounds on the affected side, **tracheal deviation**, and **hypotension** due to mediastinal shift.
*Blunt cardiac injury*
- While serious, blunt cardiac injury is typically identified during the **circulation assessment**, with signs like arrhythmias, hypotension, or cardiac tamponade.
- Its direct impact on breathing is less immediate compared to a tension pneumothorax.
*Cervical spine injury*
- A cervical spine injury can affect breathing if it involves the **phrenic nerve** (C3-C5), leading to respiratory paralysis, but this is assessed during the **disability component** or secondary survey for neurological deficits.
- It does not directly cause an acute, life-threatening compromise of lung function discernible primarily through a breathing assessment like a tension pneumothorax.
*Laryngotracheal injury*
- A laryngotracheal injury primarily affects the **airway component** (A in ABCDE), leading to immediate obstruction or stridor.
- While critical, it is distinct from problems with the lungs' ability to expand or perform gas exchange, which are assessed under breathing.
Question 805: What should be done as an immediate measure for ongoing bleeding in a patient with pelvic bone fracture?
A. Use Pelvic Binders (Correct Answer)
B. Rapid blood transfusion
C. External fixation
D. Internal definitive fixation
Explanation: **Use Pelvic Binders**
- **Pelvic binders** apply circumferential compression, which helps to stabilize the fracture and reduce the pelvic volume.
- This mechanical stabilization significantly reduces ongoing hemorrhage from venous and bone surface bleeding in unstable pelvic fractures.
*Rapid blood transfusion*
- While critically important for managing **hemorrhagic shock**, blood transfusion alone does not address the source of ongoing bleeding.
- It is a supportive measure, not an immediate means to stop the bleeding from an unstable pelvic fracture.
*Internal definitive fixation*
- **Internal definitive fixation** is a surgical procedure aimed at permanently stabilizing the fracture and would typically be performed after initial resuscitation and bleeding control.
- It is not an immediate measure for **ongoing life-threatening hemorrhage** and carries procedural risks.
*External fixation*
- **External fixation** can stabilize an unstable pelvic fracture and helps in controlling bleeding, but applying a **pelvic binder** is a quicker and less invasive initial step.
- External fixation is usually performed by a surgeon in a controlled environment, not as the very first immediate bedside measure to stop bleeding.
Question 806: A 26 year old male patient was brought to the emergency department with abdominal pain and obstipation for 3 days. He gives a history of bull gore to the abdomen 3 days back. His chest X-ray is given below. What is the probable diagnosis?
A. Hemothorax
B. Hollow viscus perforation (Correct Answer)
C. Pneumothorax
D. Intestinal obstruction
Explanation: ***Hollow viscus perforation***
- The chest X-ray clearly shows **free air under the diaphragm** (pneumoperitoneum), which is a hallmark sign of a perforated hollow viscus in the abdomen.
- The history of **bull gore to the abdomen** and subsequent abdominal pain and obstipation further supports a traumatic perforation of a stomach or intestinal segment.
*Hemothorax*
- Hemothorax would present as **fluid in the pleural space**, typically seen as blunting of the costophrenic angles or an effusion on X-ray, which is not evident here.
- While trauma can cause hemothorax, the prominent finding on this X-ray is intra-abdominal air, not intrathoracic fluid.
*Pneumothorax*
- Pneumothorax is characterized by the presence of **air in the pleural space**, leading to lung collapse and absence of lung markings in the affected area, which is not observed on this X-ray.
- The air seen is clearly **below the diaphragm**, indicating intra-abdominal free air, not air in the chest cavity surrounding the lung.
*Intestinal obstruction*
- Intestinal obstruction typically presents with **dilated bowel loops** and **air-fluid levels** on an abdominal X-ray, along with abdominal pain and obstipation.
- While the patient has obstipation, the primary X-ray finding is free air under the diaphragm, which is not characteristic of an uncomplicated intestinal obstruction.
Question 807: Which of the following findings appear late in compartment syndrome?
A. Paralysis
B. Pain on passive stretch
C. Pulselessness (Correct Answer)
D. Pallor
Explanation: ***Pulselessness***
- **Pulselessness** is a very late and ominous sign in compartment syndrome, indicating severe arterial compromise that has progressed beyond simple venous and lymphatic outflow obstruction.
- Its presence suggests **irreversible tissue damage** has likely already occurred due to prolonged ischemia.
*Paralysis*
- **Paralysis** is a late sign, indicating significant nerve ischemia and damage due to sustained pressure within the compartment.
- While it's a serious finding, it typically appears before pulselessness, as nerves are sensitive to ischemia but arteries are more resistant to complete occlusion until very high pressures are reached.
*Pain on passive stretch*
- **Pain on passive stretch** is considered one of the earliest and most reliable clinical signs of early compartment syndrome.
- It results from the stretching of ischemic muscle fibers within the confined compartment.
*Pallor*
- **Pallor** (skin paleness) is also a relatively late sign, occurring when capillary perfusion is significantly reduced due to rising intracompartmental pressure.
- It usually manifests when the pressure is high enough to restrict blood flow but often precedes the complete absence of pulses.
Question 808: A 36-year-old woman is brought to the emergency department 20 minutes after being involved in a high-speed motor vehicle collision. On arrival, she is unconscious. Her pulse is 140/min, respirations are 12/min and shallow, and blood pressure is 76/55 mm Hg. 0.9% saline infusion is begun. A focused assessment with sonography shows blood in the left upper quadrant of the abdomen. Her hemoglobin concentration is 7.6 g/dL and hematocrit is 22%. The surgeon decided to move the patient to the operating room for an emergent explorative laparotomy. Packed red blood cell transfusion is ordered prior to surgery. However, a friend of the patient asks for the transfusion to be held as the patient is a Jehovah's Witness. The patient has no advance directive and there is no documentation showing her refusal of blood transfusions. The patient's husband and children cannot be contacted. Which of the following is the most appropriate next best step in management?
A. Administer hydroxyethyl starch
B. Transfusion of packed red blood cells (Correct Answer)
C. Consult hospital ethics committee
D. Administer high-dose iron dextran
Explanation: ***Transfusion of packed red blood cells***
- This patient is in **hemorrhagic shock** (tachycardia, hypotension, low hemoglobin, and hematocrit with evidence of active bleeding), requiring emergent blood transfusion to prevent irreversible organ damage and death.
- In an **emergency setting** with an **unconscious patient** and **no documented refusal** of blood products, the principle of **presumed consent** for life-saving treatment takes precedence, especially when next of kin cannot be reached.
*Administer hydroxyethyl starch*
- **Colloids** like hydroxyethyl starch can temporarily increase intravascular volume but do not provide oxygen-carrying capacity, which is critically needed for a patient with severe anemia and hemorrhagic shock.
- While useful for volume expansion, it is **not a substitute for blood products** in severe bleeding and can have adverse effects such as kidney injury.
*Consult hospital ethics committee*
- Consulting an ethics committee is appropriate for **complex ethical dilemmas** when there is time for deliberation and the patient's life is not in immediate danger.
- In this acute, life-threatening emergency, **delaying treatment** to consult an ethics committee would jeopardize the patient's life and is not appropriate.
*Administer high-dose iron dextran*
- **Iron dextran** is used to treat iron-deficiency anemia and works by supporting red blood cell production over several days to weeks.
- It is **ineffective in acute hemorrhagic shock** where immediate restoration of oxygen-carrying capacity is required.
Question 809: A 24-year-old man is rushed to the emergency room after he was involved in a motor vehicle accident. He says that he is having difficulty breathing and has right-sided chest pain, which he describes as 8/10, sharp in character, and worse with deep inspiration. His vitals are: blood pressure 90/65 mm Hg, respiratory rate 30/min, pulse 120/min, temperature 37.2°C (99.0°F). On physical examination, patient is alert and oriented but in severe distress. There are multiple bruises over the anterior chest wall. There is also significant jugular venous distention and the presence of subcutaneous emphysema at the base of the neck. There is an absence of breath sounds on the right and hyperresonance to percussion. A bedside chest radiograph shows evidence of a collapsed right lung with a depressed right hemidiaphragm and tracheal deviation to the left. Which of the following findings is the strongest indicator of cardiogenic shock in this patient?
A. Jugular venous distention (Correct Answer)
B. Hyperresonance to percussion
C. Subcutaneous emphysema
D. No right chest raise
E. Tracheal shift to the left
Explanation: ***Jugular venous distention***
- In this trauma patient with tension pneumothorax, **jugular venous distention (JVD)** is the strongest indicator that the patient is developing **obstructive shock** with cardiovascular compromise.
- JVD indicates **impaired venous return** to the heart due to increased intrathoracic pressure compressing the vena cava and right atrium.
- While this is technically **obstructive shock** (not pure cardiogenic shock), JVD represents the cardiovascular manifestation indicating that the mechanical obstruction is now critically affecting cardiac filling and output.
- Among the options listed, **JVD is the only finding that directly reflects cardiovascular compromise** and impending circulatory collapse.
*Hyperresonance to percussion*
- This finding indicates **air in the pleural space**, characteristic of pneumothorax.
- While it confirms the diagnosis of pneumothorax, it is a **respiratory finding** rather than a direct indicator of cardiovascular compromise or shock state.
*Subcutaneous emphysema*
- This indicates **air in subcutaneous tissues** from chest wall injury or air leak.
- It confirms significant chest trauma but does not directly indicate the severity of cardiovascular compromise or shock.
*Tracheal shift to the left*
- **Tracheal deviation** away from the affected side is a classic sign of **tension pneumothorax** indicating mediastinal shift.
- While this confirms tension physiology, it is primarily an **anatomical/structural finding** rather than a direct hemodynamic indicator like JVD, which specifically reflects impaired venous return and cardiovascular compromise.
Question 810: A 56-year-old man is brought to the emergency department 30 minutes after falling from a height of 3 feet onto a sharp metal fence pole. He is unconscious. Physical examination shows a wound on the upper margin of the right clavicle in the parasternal line that is 3-cm-deep. Which of the following is the most likely result of this patient's injury?
A. Rotator cuff tear due to supraspinatus muscle injury
B. Trapezius muscle paresis due to spinal accessory nerve injury
C. Traumatic aneurysm due to internal carotid artery injury
D. Pneumothorax due to pleural injury (Correct Answer)
E. Hemothorax due to azygos vein injury
Explanation: ***Pneumothorax due to pleural injury***
- A 3-cm deep penetrating wound on the upper margin of the **right clavicle** in the parasternal line can easily injure the **pleura** and the **apex of the lung**, which extends above the clavicle.
- Injury to the pleura allows air into the pleural space, leading to a **pneumothorax**, consistent with a patient presenting with an acute injury and unconsciousness.
*Rotator cuff tear due to supraspinatus muscle injury*
- A penetrating injury at the **clavicle** is unlikely to directly injure the **supraspinatus muscle**, which is located more laterally and posteriorly in the shoulder.
- A **rotator cuff tear** would typically result in pain and weakness with arm movement, not immediate unconsciousness.
*Trapezius muscle paresis due to spinal accessory nerve injury*
- The **spinal accessory nerve** (cranial nerve XI) can be injured, especially in the posterior triangle of the neck, leading to **trapezius weakness**.
- However, direct injury to this nerve is less likely from a penetrating wound at the clavicle's **parasternal margin**, and its injury would not lead to sudden unconsciousness.
*Traumatic aneurysm due to internal carotid artery injury*
- The **internal carotid artery** is located deep within the neck, more medially and posteriorly than the described wound location.
- While possible in severe neck trauma, it's less likely to be the primary injury from a clavicular wound and would usually present with signs of significant hemorrhage rather than directly causing unconsciousness without other neurological deficits being mentioned.
*Hemothorax due to azygos vein injury*
- The **azygos vein** is a major vessel located in the posterior mediastinum, deep within the chest, making it highly unlikely to be injured by a 3-cm deep penetrating wound near the **clavicle** unless the injury tract is significantly longer or deviates.
- While a **hemothorax** can occur from vascular injury, a penetrating wound at this location would much more commonly cause a pneumothorax due to the superficial position of the lung apex.
