Quick reference algorithm

Blunt Cardiac Injury (BCI) Algorithm

Adult blunt trauma patients · 2026 edition

Isolated sternal fracture: see disposition note ↓

1 · Entry criteria

Apply to adult blunt trauma patients with any of:

Significant blunt anterior chest impact
Rapid deceleration mechanism (high-speed MVC, motorcycle crash, auto vs pedestrian, fall from height, crush, blast)
Direct precordial blow
Chest wall injury suggesting energy transfer: sternal fracture, multiple rib fractures, pulmonary contusion, hemothorax, pneumothorax, seatbelt sign, scapular fracture
Unexplained hypotension, syncope, chest pain, dyspnea, new murmur, dysrhythmia, or ECG abnormality after blunt trauma

2 · All suspected BCI

Immediate trauma evaluation

ATLS primary survey and resuscitation
E-FAST with pericardial view
CXR / CT chest / CTA chest per trauma indications
12-lead ECG on arrival
Troponin I or local high-sensitivity troponin on arrival

Immediate high-risk features present?

High riskSection 3 ↓StableSection 4 · screening ↓

Immediate high-risk branch

Any of the following?

Unexplained shock
Cardiac arrest
Tamponade physiology
Pericardial fluid on E-FAST/CT
New murmur
Heart failure / pulmonary edema
Malignant arrhythmia
Complete heart block
STEMI pattern
Need for pacing
Need for vasoactive support

Yes → high risk

High risk

Activate trauma attending immediately
Obtain urgent TTE
TEE if TTE is inadequate
Admit to ICU
Activate in-house resources as indicated: cardiology, cardiothoracic surgery, cath lab, OR

Section 6: in-house escalation triggers

Go to Section 5 (positive screen management)

Stable patient — screening branch

Interpret initial ECG + troponin

Result A

ECG normal or unchanged and troponin normal

Result B

ECG abnormal or troponin elevated / rising

Positive screen ↓

Very early presentation, persistent symptoms, high-risk mechanism, or clinical concern?

BCI ruled out

Discharge if otherwise safe
Unmonitored admission only for noncardiac injuries

Yes

Repeat ECG + troponin at 3–6 hours (or ~8 hours post-injury per local policy)

Repeat ECG + troponin results

Both normal → BCI ruled out

Discharge if otherwise safe
Unmonitored admission only for noncardiac injuries

Either abnormal → positive screen

Go to Section 5 (positive screen management)

From Result B

Positive screen

Admit to telemetry for ≥ 24 hours
Admit to ICU if unstable, recurrent arrhythmia, heart failure, pacing need, vasoactive support, or concerning echo / major associated injuries

Go to Section 5 (positive screen management)

Positive screen management

Assess for:

Persistent arrhythmia
Ischemic ECG changes
Rising troponin
Hypotension
Heart failure
New murmur
Concerning E-FAST / CT finding
Other clinical deterioration

If any present:

Obtain TTE
TEE if TTE is inadequate
Consult cardiology

Escalate further if evidence of:

Structural cardiac injury
Tamponade
Traumatic coronary injury
Ventricular dysfunction
Valvular injury
Septal injury
Need for invasive pacing
Need for cath lab
Need for OR
Need for mechanical circulatory support

Section 6: in-house escalation triggers

6. Level I in-house escalation triggers

Activate appropriate resources

Cath lab: STEMI pattern or suspected traumatic coronary thrombosis / dissection
Cardiothoracic surgery / OR: Tamponade or active pericardial bleeding, cardiac rupture / herniation
TEE / advanced echo: When TTE is inadequate or further definition needed
ICU – vasoactive support: Persistent cardiogenic shock or instability
Invasive pacing: Complete heart block or bradyarrhythmia requiring support
Malignant arrhythmia: Recurrent VT/VF or symptomatic sustained arrhythmias
Mechanical circulatory support: For refractory shock or severe ventricular failure

7. Treatment principles

Treat arrhythmias using ACLS

Correct trauma drivers:

Hypoxia
Acidosis
Hypovolemia / hemorrhage
Electrolyte abnormalities
Tension pneumothorax
Tamponade
Pain

Maintain (unless contraindicated):

K > 4.0 mEq/L
Mg > 2.0 mg/dL

Do not beta-block compensatory sinus tachycardia until reversible causes are addressed

Treat ST elevation after blunt trauma as ACS or traumatic coronary injury until proven otherwise

8. Disposition

Discharge / ward appropriate

Normal ECG
Normal troponin
Stable hemodynamics
No concerning symptoms
No murmur
No heart failure
No concerning pericardial effusion
No other injury requiring monitored admission

Telemetry (≥ 24 hours)

Abnormal ECG
Elevated or rising troponin
Stable rhythm abnormality
No shock
No structural injury suspected

ICU

Shock or vasoactive support
Malignant or recurrent arrhythmia
Complete heart block
Pacing need
Heart failure or ventricular dysfunction
Concerning echo
Major associated injuries

Unmonitored admission

Only for other noncardiac injuries when BCI is ruled out
ECG and troponin normal
Clinically stable

Isolated sternal fracture alone does not require ICU admission, telemetry, or echocardiography if ECG and troponin are normal and the patient is otherwise safe for discharge.

9. Follow-up

No routine cardiology follow-up needed if:

Symptoms resolve
ECG normalizes
Troponin normalizes
No structural injury

Cardiology follow-up indicated if:

Persistent symptoms
Abnormal discharge ECG
Confirmed BCI
Significant arrhythmia
Heart failure or wall motion abnormality
Valve / septal injury
Coronary injury
Any cardiac intervention performed

This algorithm is based on EAST 2012 Practice Management Guideline and current evidence (2020–2024) including ACR imaging criteria, systematic reviews, and expert consensus. Use clinical judgment and institutional protocols.

6. Level I in-house escalation triggers

Activate appropriate resources

Cath lab

STEMI pattern or suspected traumatic coronary thrombosis / dissection

Cardiothoracic surgery / OR

Tamponade or active pericardial bleeding, cardiac rupture / herniation

TEE / advanced echo

When TTE is inadequate or further definition needed

ICU – vasoactive support

Persistent cardiogenic shock or instability

Invasive pacing

Complete heart block or bradyarrhythmia requiring support

Malignant arrhythmia

Recurrent VT/VF or symptomatic sustained arrhythmias

Mechanical circulatory support

For refractory shock or severe ventricular failure

7. Treatment principles

Treat arrhythmias using ACLS

Correct trauma drivers:

Hypoxia
Acidosis
Hypovolemia / hemorrhage
Electrolyte abnormalities
Tension pneumothorax
Tamponade
Pain

Maintain (unless contraindicated):

K > 4.0 mEq/L
Mg > 2.0 mg/dL

Do not beta-block compensatory sinus tachycardia until reversible causes are addressed

Treat ST elevation after blunt trauma as ACS or traumatic coronary injury until proven otherwise

8. Disposition

Discharge / ward appropriate

Normal ECG
Normal troponin
Stable hemodynamics
No concerning symptoms
No murmur
No heart failure
No concerning pericardial effusion
No other injury requiring monitored admission

Telemetry (≥ 24 hours)

Abnormal ECG
Elevated or rising troponin
Stable rhythm abnormality
No shock
No structural injury suspected

ICU

Shock or vasoactive support
Malignant or recurrent arrhythmia
Complete heart block
Pacing need
Heart failure or ventricular dysfunction
Concerning echo
Major associated injuries

Unmonitored admission

Only for other noncardiac injuries when BCI is ruled out
ECG and troponin normal
Clinically stable

Isolated sternal fracture alone does not require ICU admission, telemetry, or echocardiography if ECG and troponin are normal and the patient is otherwise safe for discharge.

9. Follow-up

No routine cardiology follow-up needed if:

Symptoms resolve
ECG normalizes
Troponin normalizes
No structural injury

Cardiology follow-up indicated if:

Persistent symptoms
Abnormal discharge ECG
Confirmed BCI
Significant arrhythmia
Heart failure or wall motion abnormality
Valve / septal injury
Coronary injury
Any cardiac intervention performed