Cardiovascular · Topic 48 of 48

Blunt Cardiac & Great-Vessel Trauma

Cardiovascular · chest trauma

Blunt Cardiac & Great-Vessel Trauma

Screen blunt chest trauma with ECG plus troponin I, image the aorta after any severe deceleration, and slow the heart before aortic repair.

Key numbers

Esmolol: HR 60–80, SBP ≤ 100SBP ≤ 100 · HR 60–80

01 · The ruleNormal ECG plus troponin rules out BCI

Blunt cardiac injury is ruled out only when both the ECG and the troponin I are normal (negative predictive value near 100%); the patient can then be discharged or go to an unmonitored bed.

02 · DoCT angiography after severe deceleration

Image the aorta — CT angiography in most trauma centers — in every patient with a severe deceleration injury, even when the examination and chest x-ray are normal.

03 · DoEsmolol: HR 60–80, SBP ≤ 100

Once other bleeding is excluded, start anti-impulse therapy with a beta-blocker such as esmolol, targeting heart rate 60–80 bpm and systolic BP 100 mmHg or less until the aorta is repaired.

What it is

Core idea

Aortic tears occur at the isthmusBlunt aortic injury comes from severe deceleration (high-speed crash, fall from height); partial tears sit at the isthmus near the ligamentum arteriosum, contained by the adventitia, while complete rupture is usually fatal at the scene.

Presentation

What you'll see

Unexplained sinus tachycardia, AF, RBBB, PVCsContusion shows on the ECG as unexplained sinus tachycardia, atrial fibrillation (the most common arrhythmia), right bundle branch block, PVCs, or ST changes that mimic ischemia.

Chest x-ray: widened mediastinum, lost aortic knobChest x-ray clues to aortic injury: widened mediastinum, obscured aortic knob, trachea or NG tube deviated right, depressed left mainstem bronchus, left apical cap, and first or second rib fractures.

Wound medial to nipples or scapulae: think tamponadeA penetrating wound medial to the nipples (front) or scapulae (back) threatens the heart; traumatic tamponade is usually penetrating, Beck's triad is unreliable, and bedside E-FAST can make the diagnosis.

Do right now

In this order

First moves

Order an admission ECG and troponin I

→

CT angiography after severe deceleration

→

Esmolol: HR 60–80, SBP ≤ 100SBP ≤ 100 · HR 60–80

→

TEVAR is the preferred aortic repair

Why each step

Order an admission ECG and troponin IEvery patient with suspected blunt cardiac injury gets an admission 12-lead ECG and a troponin I; the ECG alone is not enough to rule the injury out.

CT angiography after severe decelerationImage the aorta — CT angiography in most trauma centers — in every patient with a severe deceleration injury, even when the examination and chest x-ray are normal.

Esmolol: HR 60–80, SBP ≤ 100Once other bleeding is excluded, start anti-impulse therapy with a beta-blocker such as esmolol, targeting heart rate 60–80 bpm and systolic BP 100 mmHg or less until the aorta is repaired.

TEVAR is the preferred aortic repairThoracic endovascular aortic repair (TEVAR) is now preferred over open repair, and repair can wait while other life-threatening injuries are treated.

Management

Orders

Abnormal ECG or troponin: admit to telemetryNew ECG changes or an elevated troponin I mean admission for cardiac monitoring; contusion with conduction abnormalities is monitored for 8–24 hours because of the risk of sudden arrhythmia.

Pericardiocentesis temporizes; window or thoracotomy definitiveSubxiphoid pericardiocentesis is only a temporizing step in unstable traumatic tamponade (clotted blood can give a false negative); a pericardial window or thoracotomy with pericardiotomy is definitive.

Red flags & don'ts

Avoid harm

Chamber rupture presents as tamponade complicationVentricular rupture is usually rapidly fatal, but smaller (often right-sided or atrial) tears present as tamponade; valve disruption causes a new murmur with acute heart failure, and septal rupture may appear later.

The rules

Know these

Echo for hypotension or arrhythmia, not screeningEchocardiography is not a screening test for blunt cardiac injury; reserve it for hypotension, arrhythmia or abnormal E-FAST findings to look for wall-motion loss, effusion, or chamber or valve rupture.

Aortic grade 1–2 nonoperative, grade 4 emergentSVS 2026: grade 1–2 (minimal) aortic injuries are managed nonoperatively; stable grade 3 gets delayed TEVAR after 24 hours; grade 4, or an aortic injury causing instability, needs urgent or emergent repair.

ED thoracotomy: pulseless penetrating chest woundEmergency department thoracotomy is strongly recommended for a patient who arrives pulseless with signs of life after penetrating thoracic injury, and conditionally recommended against after blunt injury without signs of life.

More detail

Reference

Show 6 reference facts

A sternal fracture alone does not predict blunt cardiac injury; cardiac CT or MRI can separate a true acute MI from contusion in a trauma patient.

Commotio cordis is ventricular fibrillation after a blow to the precordium (often a ball or puck in a young athlete) during early repolarization, with no structural injury; treat with CPR and defibrillation.

Clinical signs of traumatic aortic injury include chest pain, upper-extremity pulse deficits, a harsh interscapular systolic murmur, hoarseness, and lower BP or weaker pulses in the legs than the arms.

After nonoperative management, grade 1 aortic injuries need no routine follow-up imaging, while grade 2 injuries get at least one follow-up CT angiogram, suggested at 1–3 months.

With a grade 1–2 aortic injury plus traumatic brain injury, skip anti-impulse therapy — BP management follows the brain injury; for grade 3 with brain injury, decide jointly with neurosurgery.

Transesophageal echocardiography is not a first-line aortic test in trauma but can be done intraoperatively and detects some associated injuries (such as innominate vessel tears) that CT misses.

Pearl

A normal ECG and a normal troponin I together rule out blunt cardiac injury; either one alone does not.

Sources · Merck Manual Professional — Blunt Cardiac Injury · Clancy K et al. Screening for blunt cardiac injury: an EAST practice management guideline. J Trauma Acute Care Surg 2012;73:S301–S306 · Merck Manual Professional — Aortic Disruption (Traumatic) · Guideline Central — 2026 SVS Blunt Thoracic Aortic Injury guideline spotlight · DuBose JJ et al. Society for Vascular Surgery clinical practice guideline on the management of blunt thoracic aortic injury: focused update. J Vasc Surg 2026 · Merck Manual Professional — Cardiac Tamponade (thoracic trauma) · Seamon MJ et al. An evidence-based approach to patient selection for emergency department thoracotomy: an EAST practice management guideline. J Trauma Acute Care Surg 2015;79:159–173 · Starter sheet built from the verified AGACNP fact map (facts reviewed 2026-10-15).