CC: Flew off a motorcycle

Chief Complaint and Mechanism

• Left-sided chest pain and dyspnea after blunt chest trauma.
• The mechanism is high-energy blunt trauma from a motorcycle collision with ejection.
• Always start with the chief complaint. Be as specific as possible, but do not make a diagnosis yet. The mechanism tells you how the patient was injured; it does not establish which injuries are present.

Immediate Priorities

• Sick. Start the primary survey using xABCDE and treat life threats as you find them.

Run the primary survey

• x — Exsanguinating external hemorrhage: Look for and immediately control catastrophic external bleeding.
• A — Airway: Assess airway patency while protecting the cervical spine.
• B — Breathing: Assess ventilation, oxygenation, and immediately dangerous chest injuries.
• C — Circulation: Assess perfusion and look for external and concealed blood loss.
• D — Disability: Perform a rapid neurologic assessment.
• E — Exposure: Expose the patient to look for injuries while preventing hypothermia.
• The “x” comes first because catastrophic external hemorrhage can require control before the traditional ABC sequence. ATLS 11 uses this updated framework.⁵

Think by mechanism

• Pleural air: Tension and open pneumothorax can threaten ventilation and circulation.
• Pleural blood: Massive hemothorax can cause major blood loss and respiratory compromise.
• Cardiac filling: Tamponade can obstruct filling of the heart.
• Chest wall and lung injury: Flail chest with substantial pulmonary injury can cause respiratory failure.
• Activate the trauma team, provide oxygen, establish monitoring and large-bore IV access, and resuscitate while the survey continues. Do not finish a checklist before treating an identified life threat.⁶

Concerning Vital Signs

• RR 32 is an early warning. BP 108/72 does not rule out shock.

Read the whole patient

• Tachypnea may signal respiratory compromise or a compensatory response to impaired tissue perfusion.
• Tachycardia and hypoxemia add to the concern; the respiratory rate is not an isolated finding.
• A young patient may initially maintain blood pressure through tachycardia and peripheral vasoconstriction despite serious blood loss or other circulatory compromise.

Diagnosis and Immediate Action

• Suspected left tension pneumothorax. Decompress immediately; do not wait for a chest X-ray.

Make the clinical diagnosis

• Sudden respiratory distress, hypoxemia, unilateral absent breath sounds, and hypotension identify an immediately dangerous chest process.
• In this unstable patient, imaging must not delay decompression.
• A midline trachea does not exclude tension pneumothorax. Tracheal deviation can be late or absent.
• The decision comes from the patient’s physiology and examination, not from waiting for every classic sign.⁶⁷¹⁰

Immediate Treatment

• Immediately decompress the left pleural space, then establish ongoing drainage with tube thoracostomy.

Relieve the pressure

• Use needle decompression or finger thoracostomy according to the setting, team expertise, and local trauma protocol.
• Proceed to tube thoracostomy for continued evacuation of pleural air and blood.
• Keep oxygenation, ventilation, circulation, and the response to treatment under continuous reassessment.

Tension Physiology

• Tension describes pressure-related cardiopulmonary compromise, not simply the size of the pneumothorax.

Simple pneumothorax

• During normal quiet breathing, the pressure difference between the alveoli and pleural space helps hold the lung expanded against the chest wall.
• Air entering the pleural space disrupts this relationship and allows the lung to recoil and collapse.
• A simple pneumothorax can cause pain, dyspnea, hypoxemia, and decreased breath sounds without pressure-mediated circulatory collapse.

Tension pneumothorax

• Pleural air accumulates under pressure and produces dangerous respiratory or circulatory compromise.
• In this patient, impaired cardiac filling and falling cardiac output explain the hypotension.
• A large pneumothorax is not automatically a tension pneumothorax; the physiologic effect is what matters.
• Loss of the normal pleural-pressure relationship explains lung collapse. Additional pressure physiology explains why this patient can arrest.⁷¹⁰

Obstructive Shock

• Obstructive shock: rising intrathoracic pressure impairs venous return and cardiac filling.

Follow the circulation

• ↑ Intrathoracic pressure → ↓ venous return → ↓ preload → ↓ stroke volume → ↓ cardiac output → hypotension.
• Pressure interferes with blood returning through the great veins to the right heart.
• Neck veins may distend because venous blood cannot empty normally into the thorax.
• The heart may still be capable of pumping; the mechanical problem is impaired filling and circulation.

Massive Hemothorax

• Massive hemothorax causing hemorrhagic hypovolemic shock.

Where did the circulating volume go?

• Blood has left the vascular space and accumulated inside the chest.
• The loss of circulating volume reduces preload, stroke volume, and cardiac output.
• Improved oxygenation does not mean that perfusion has recovered.

Air versus blood

• Pneumothorax usually produces hyperresonance because the pleural space contains air.
• Hemothorax usually produces dullness because the pleural space contains blood.
• Both can decrease breath sounds, and mixed injuries can make the examination less clear.
• Persistent hypotension with this much pleural blood requires immediate trauma-surgical involvement and hemorrhage control.⁶⁸

Hemorrhage Resuscitation

• He needs blood-product resuscitation and hemorrhage control. A normal initial hemoglobin does not make this safe.

Replace what he is losing

• Activate the institutional massive-transfusion protocol for this ongoing life-threatening hemorrhage.
• Give warmed blood products while the trauma team arranges definitive bleeding control.
• Large-volume crystalloid does not replace the red cells or coagulation components he is losing.

Why the initial hemoglobin can mislead

• Hemoglobin is a concentration, not a direct measurement of total circulating blood volume.
• Acute whole-blood hemorrhage removes red cells and plasma together, so the initial concentration may remain near normal.
• The measured value may fall later with fluid shifts and resuscitation; follow serial results alongside the patient’s physiology.⁹

Ionized Calcium

• Monitor ionized calcium and replace it as needed.

Connect the product to the physiology

• Blood products contain citrate, which binds calcium.
• Rapid transfusion can lower ionized calcium.
• Hypocalcemia can impair cardiac contractility and coagulation and worsen hypotension.
• Follow ionized calcium during massive transfusion and correct abnormalities according to the local resuscitation protocol.⁹

Shock Categories

• Hypovolemic, cardiogenic, distributive, and obstructive shock. Mixed shock is possible.

Hypovolemic — too little circulating volume

• Reduced vascular volume limits preload and cardiac output. Hemorrhage is the key example in this trauma patient.

Cardiogenic — pump failure

• The heart cannot provide adequate forward flow. Examples include a large myocardial infarction, severe cardiomyopathy, or a major arrhythmia.

Distributive — loss of vascular tone

• Abnormal vasodilation and blood-flow distribution impair effective perfusion. Examples include sepsis, anaphylaxis, and neurogenic shock.

Obstructive — mechanical interference with circulation

• Tension pneumothorax and cardiac tamponade are major traumatic causes.
• Massive pulmonary embolism is an important nontraumatic board example.

Apply it to this patient

• Tension pneumothorax can produce obstructive shock while the hemothorax simultaneously produces hemorrhagic hypovolemic shock.
• Decompression addresses the pressure problem; it does not replace lost blood or stop the bleeding.
• The dominant mechanism can change as injuries evolve and treatments take effect.

Urgent Hemorrhage Control

• This is a major operative red flag. His persistent instability already demands urgent hemorrhage control.

Know the classic warning numbers

• More than 1,500 mL immediately after chest-tube placement is a classic trigger for urgent operative assessment.
• More than 200 mL/hour for roughly 2–4 hours is another classic warning pattern; exact thresholds vary by guidance and local protocol.

Treat the patient’s physiology

• Do not wait for a drainage cutoff when ongoing intrathoracic bleeding is causing instability. Chest-tube output can underestimate bleeding if drainage is impaired, so a lower number cannot overrule a deteriorating patient.⁶⁸

Cardiac Tamponade

• Cardiac tamponade. Obtain focused cardiac ultrasound as part of eFAST while resuscitation continues.

Beck triad

• Hypotension reflects impaired cardiac filling and output.
• Jugular venous distention reflects elevated venous pressure.
• Muffled heart sounds are the classic third finding.

Use the bedside study purposefully

• Look for pericardial fluid and signs of impaired filling in the clinical context. The complete triad is not required, and equal breath sounds alone do not establish the diagnosis. Suspected traumatic tamponade with instability requires immediate trauma-surgical involvement; ultrasound must not delay definitive intervention.⁶⁸

Disposition

• Immediate operative trauma evaluation and hemorrhage control, with continued resuscitation—not a trip to CT.

Separate breathing from perfusion

• His breathing improved after decompression, but he remains hemodynamically unstable.
• The chest tube has identified a major source of hemorrhage, with 1.6 liters already drained.
• CT must not delay bleeding control in an unstable patient who already requires urgent intervention.
• Complete imaging can follow when the patient’s condition permits it. Right now, prioritize the intervention needed to stop the hemorrhage.⁸

Twenty-Second Presentation

“Twenty-two-year-old man after motorcycle ejection with left chest pain and dyspnea. He became hypoxic and hypotensive, and we decompressed a suspected left tension pneumothorax. Chest tube returned 1.6 liters of blood with ongoing output. He remains hypotensive despite massive-transfusion resuscitation. He needs immediate operative hemorrhage control.”

Make the call actionable

• Include the mechanism and complaint, the critical findings, what you have done, how he responded, and exactly what you need next.

Ongoing Hemorrhagic Shock

• Ongoing hemorrhagic hypovolemic shock with worsening perfusion.

Act while definitive control is arranged

• Continue massive-transfusion resuscitation and reassess the response.
• Monitor and correct ionized calcium.
• Use active warming and warmed blood products.
• Repeat the primary survey, reassess ventilation and chest-tube function, and look for additional bleeding or recurrent obstruction.
• Escalate immediately with the trauma and OR teams to achieve hemorrhage control. Deterioration cannot be managed by passively waiting for the room.

Prevent the downward spiral

• Hypothermia and acidosis impair coagulation, which can worsen hemorrhage and tissue hypoperfusion. Continued transfusion supports the patient while definitive bleeding control is obtained.⁹

Update the surgeon

“He is deteriorating: HR 152, BP 64/38, and mental status is declining. Another 500 mL has drained from the chest, for 2.1 liters total. Massive transfusion is ongoing. He needs immediate hemorrhage control.”

Answer

• xABCDE.

Answer

• Exsanguinating external hemorrhage.

Answer

• Suspect tension pneumothorax and decompress immediately.

Answer

• No. Do not delay treatment for imaging.

Answer

• No. Tracheal deviation can be late or absent.

Answer

• Pressure causing cardiopulmonary compromise.

Answer

• Obstructive shock.

Answer

• Impaired venous return reduces preload, stroke volume, and cardiac output.

Answer

• Pleural air: pneumothorax.

Answer

• Pleural blood: hemothorax.

Answer

• Hemorrhagic hypovolemic shock.

Answer

• Tension pneumothorax and cardiac tamponade.

Answer

• Beck triad; suspect cardiac tamponade.

Answer

• Yes. Whole-blood loss may initially leave the measured concentration near normal.

Answer

• Ionized calcium. Citrate in blood products binds calcium.

Answer

• A major operative red flag; ongoing instability demands urgent hemorrhage control.

Answer

• Open pneumothorax.

Answer

• No. Continue resuscitation and prioritize definitive hemorrhage control.

Answer

• Still yours. Continue active care and communicate deterioration.