A 45-year-old man is brought to the emergency department after a car accident with pain in the middle of his chest and some shortness of breath. He has sustained injuries to his right arm and leg. He did not lose consciousness. His temperature is 37°C (98.6°F), pulse is 110/min, respirations are 18/min, and blood pressure is 90/60 mm Hg. He is alert and oriented to person, place, and time. Examination shows several injuries to the upper extremities and chest. There are jugular venous pulsations 10 cm above the sternal angle. Heart sounds are faint on cardiac examination. The lungs are clear to auscultation. An ECG is shown. Which of the following is the most appropriate next step in management?

Contrast-enhanced CT angiography

Contrast esophagram with gastrografin

A 24-year-old man is brought to the emergency department after being involved in a motor vehicle accident as an unrestrained driver. He was initially found unconscious at the scene but, after a few minutes, he regained consciousness. He says he is having difficulty breathing and has right-sided pleuritic chest pain. A primary trauma survey reveals multiple bruises and lacerations on the anterior chest wall. His temperature is 36.8°C (98.2°F), blood pressure is 100/60 mm Hg, pulse is 110/min, and respiratory rate is 28/min. Physical examination reveals a penetrating injury just below the right nipple. Cardiac examination is significant for jugular venous distention. There is also an absence of breath sounds on the right with hyperresonance to percussion. A bedside chest radiograph reveals evidence of a collapsed right lung with depression of the right hemidiaphragm and tracheal deviation to the left. Which of the following is the most appropriate next step in the management of this patient?

Needle thoracostomy at the 2nd intercostal space, midclavicular line

Tube thoracostomy at the 2nd intercostal space, midclavicular line

Tube thoracostomy at the 5th intercostal space, midclavicular line

Tube thoracostomy at the 5th intercostal space, anterior axillary line

Needle thoracostomy at the 5th intercostal space, midclavicular line

A 22-year-old soldier sustains a gunshot wound to the left side of the chest during a deployment in Syria. The soldier and her unit take cover from gunfire in a nearby farmhouse, and a combat medic conducts a primary survey of her injuries. She is breathing spontaneously. Two minutes after sustaining the injury, she develops severe respiratory distress. On examination, she is agitated and tachypneic. There is an entrance wound at the midclavicular line at the 2nd rib and an exit wound at the left axillary line at the 4th rib. There is crepitus on the left side of the chest wall. Which of the following is the most appropriate next step in management?

Intravenous administration of fentanyl

Administration of supplemental oxygen

A 17-year-old boy is brought to the emergency department by his parents 6 hours after he suddenly began to experience dyspnea and pleuritic chest pain at home. He has a remote history of asthma in childhood but has not required any treatment since the age of four. His temperature is 98.4°F (36.9°C), blood pressure is 100/76 mmHg, pulse is 125/min, respirations are 24/min. On exam, he has decreased lung sounds and hyperresonance in the left upper lung field. A chest radiograph shows a slight tracheal shift to the right. What is the best next step in management?

Observe for another six hours for resolution

A trauma 'huddle' is called. Morphine is administered for pain. Low-flow oxygen is begun. A traumatic diaphragmatic rupture is suspected. Infusion of 0.9% saline is begun. Which of the following is the most appropriate next step in management?

CT of the chest, abdomen, and pelvis

A 32-year-old man is brought to the emergency department after a skiing accident. The patient had been skiing down the mountain when he collided with another skier who had stopped suddenly in front of him. He is alert but complaining of pain in his chest and abdomen. He has a past medical history of intravenous drug use and peptic ulcer disease. He is a current smoker. His temperature is 97.4°F (36.3°C), blood pressure is 77/53 mmHg, pulse is 127/min, and respirations are 13/min. He has a GCS of 15 and bilateral shallow breath sounds. His abdomen is soft and distended with bruising over the epigastrium. He is moving all four extremities and has scattered lacerations on his face. His skin is cool and delayed capillary refill is present. Two large-bore IVs are placed in his antecubital fossa, and he is given 2L of normal saline. His FAST exam reveals fluid in Morison's pouch. Following the 2L normal saline, his temperature is 97.5°F (36.4°C), blood pressure is 97/62 mmHg, pulse is 115/min, and respirations are 12/min. Which of the following is the best next step in management?

Upper gastrointestinal endoscopy

A 22-year-old man is brought to the emergency department 30 minutes after being involved in a high-speed motor vehicle collision in which he was the unrestrained driver. After extrication, he had severe neck pain and was unable to move his arms and legs. On arrival, he is lethargic and cannot provide a history. Hospital records show that eight months ago, he underwent an open reduction and internal fixation of the right humerus. His neck is immobilized in a cervical collar. Intravenous fluids are being administered. His pulse is 64/min, respirations are 8/min and irregular, and blood pressure is 104/64 mm Hg. Examination shows multiple bruises over the chest, abdomen, and extremities. There is flaccid paralysis and absent reflexes in all extremities. Sensory examination shows decreased sensation below the shoulders. Cardiopulmonary examination shows no abnormalities. The abdomen is soft. There is swelling of the right ankle and right knee. Squeezing of the glans penis does not produce anal sphincter contraction. A focused assessment with sonography for trauma shows no abnormalities. He is intubated and mechanically ventilated. Which of the following is the most appropriate next step in management?

Intravenous dexamethasone therapy

Chest trauma management for USMLE Step 2 CK: High-Yield Surgery Lessons

Primary Survey - First Things First

Follows the ABCDE algorithm to identify and manage immediate life-threats.

Airway: Secure airway, maintain C-spine. Intubate if GCS ≤ 8.
Breathing: Treat life-threats:
- Tension Pneumothorax: Needle decompression → chest tube.
- Open Pneumothorax: 3-sided dressing.
- Massive Hemothorax: Chest tube (>1500 mL initial).
Circulation: Control hemorrhage, 2 large-bore IVs. Suspect tamponade (Beck's triad) → FAST scan.

⭐ In tension pneumothorax, clinical diagnosis trumps radiographic confirmation. Do not delay life-saving needle decompression for a chest X-ray.

Immediate Threats - Thoracic Terrors

Airway Obstruction: Stridor, gurgling, hoarseness. Secure airway immediately.
Tension Pneumothorax: Hypotension, JVD, absent breath sounds, tracheal deviation. Immediate needle decompression (2nd ICS MCL or 5th ICS AAL) followed by chest tube.
Open Pneumothorax: Sucking chest wound. Place a three-sided occlusive dressing.
Massive Hemothorax: >1500 mL blood on initial chest tube placement. Requires thoracotomy.
Cardiac Tamponade: Beck's Triad (hypotension, JVD, muffled heart sounds). Pericardiocentesis.
Flail Chest: Paradoxical chest wall movement. Requires intubation and positive pressure ventilation.

Blunt Chest Injury: Primary Survey and Complications

⭐ Beck's triad for cardiac tamponade is only present in a minority of cases; a high index of suspicion and FAST exam are critical.

Pleural Space Problems - Air & Blood Blues

Tension Pneumothorax: Clinical Dx! Hypotension, JVD, absent breath sounds, tracheal deviation.
- Immediate needle decompression (2nd ICS, MCL) → chest tube.
Open Pneumothorax (“sucking chest wound”): Three-sided occlusive dressing.
Hemothorax: Blood in pleural space; dullness to percussion.
- Tube thoracostomy (chest tube) is standard.
- Thoracotomy indicated for massive hemothorax: >1500 mL initial output, or >200 mL/hr for 2-4 hours.

⭐ In a tension pneumothorax, do not wait for a chest X-ray to confirm. Treat clinically with immediate needle decompression.

Pump & Pipe Injuries - Cardiac Catastrophes

Aortic Injury: Deceleration injury classic. Look for widened mediastinum (>8cm) on CXR, left hemothorax. Gold standard: CT Angio. Manage BP & HR (Labetalol) before surgical/endovascular repair.
Myocardial Contusion: Blunt trauma mimics MI. ECG changes, ↑Troponins. Monitor for arrhythmias, manage supportively. Echocardiogram assesses wall motion abnormalities & valvular function.
Cardiac Tamponade: 📌 Beck's Triad: ↓BP, ↑JVP, muffled heart sounds.

⭐ The most common site of traumatic aortic rupture is the aortic isthmus, just distal to the left subclavian artery.

CXR: Widened mediastinum, pleural effusion, ICC

Diagnostics & Interventions - See, Stick, Solve

See (Diagnose): Rapidly assess with eFAST and portable CXR. Reserve CT for stable patients requiring detailed anatomical views.
Stick (Intervene):
- Needle Decompression: 2nd ICS, mid-clavicular line.
- Tube Thoracostomy: 4th/5th ICS, anterior-axillary line.
- Emergency Thoracotomy: Penetrating trauma, recent signs of life.

Chest tube and needle decompression anatomical landmarks

⭐ A massive hemothorax is defined by an initial chest tube output of >1500 mL or persistent bleeding of >200 mL/hr for 2-4 hours, often requiring thoracotomy.

High‑Yield Points - ⚡ Biggest Takeaways

Always start with ABC (Airway, Breathing, Circulation).

Tension pneumothorax: Perform immediate needle decompression based on clinical signs, before a chest X-ray, followed by a chest tube.

Open pneumothorax (sucking chest wound) requires a three-sided occlusive dressing.

Massive hemothorax (>1.5L initial chest tube output) is an indication for urgent thoracotomy.

Flail chest management focuses on pain control and positive pressure ventilation.

Cardiac tamponade: Diagnose with FAST scan; treat with pericardiocentesis.

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