Defining Traumatic Cardiac Arrest

Traumatic cardiac arrest demands rapid treatment, but one of the hardest decisions is whether a resuscitative thoracotomy is likely to help. Can the location of a penetrating injury and the rhythm on the monitor give us better information than an uncertain history of when the patient arrested?

Recorded at Trauma 2030 at the Royal College of Surgeons of England, Iain Beardsell speaks with Laura Kocierz about a data-driven approach developed from London’s Air Ambulance experience. They discuss distinguishing cardiac tamponade from exsanguination, using ECG rhythm as a surrogate for arrest duration, and why thoracotomy should target the underlying pathology rather than simply the diagnosis of traumatic cardiac arrest.

In this podcast:

• Why traumatic cardiac arrest is better thought of as a clinical low-output state rather than relying on a simple binary definition.

• How the surface location of a penetrating injury can help estimate whether cardiac tamponade or exsanguination is the more likely cause.

• Why a wound within the cardiac box or epigastrium was associated with more than a 30% chance of isolated tamponade in the London data.

• Why treating presumed exsanguination should not stop the team actively looking for concurrent tamponade, including with ultrasound.

• How the presenting ECG rhythm may provide useful physiological information when the reported duration of traumatic cardiac arrest is uncertain.

• The observed progression from organised sinus rhythm through bradycardia and agonal complexes to asystole as arrest duration increases — and why these are population-derived timings rather than precise clocks for an individual patient.

• Why an organised rhythm in a patient with suspected tamponade may support immediate resuscitative thoracotomy even when the reported arrest time appears prolonged.

• Why resuscitative thoracotomy is not, in itself, a treatment for exsanguination, where haemorrhage control, blood transfusion and rapid movement towards definitive care may need to take priority.

About Laura Kocierz

Laura Kocierz is a consultant in intensive care medicine and anaesthesia in Worcester and a consultant with London’s Air Ambulance. Her work includes research examining how clinical information available at the scene can support decision-making in traumatic cardiac arrest.

Timestamps

00:00 – Defining traumatic cardiac arrest
02:00 – Injury location, tamponade and exsanguination
05:00 – When should resuscitative thoracotomy be considered?
07:00 – Using the ECG as a surrogate for arrest duration
11:00 – Combining likely pathology with presenting rhythm
13:00 – Moving beyond a simple 15-minute rule
14:00 – Why thoracotomy is not the treatment for exsanguination

Links and resources

Read the paper: Improving decision-making for prehospital Resuscitative Thoracotomy in traumatic cardiac arrest

Read the London’s Air Ambulance study of 601 prehospital resuscitative thoracotomies

Find out more about Trauma 2030

More from St Emlyn’s

St Emlyn’s provides free, evidence-based education for the emergency and acute care community. Explore our blogs, podcasts and other resources.

If you have an idea you would like to share, would like to write with us, or want to get involved with St Emlyn’s, we’d love to hear from you.

Learning from podcasts?

If podcasts form part of your CPD, MedPod Learn helps you turn listening into documented learning. You can use it across all your podcasts — not just St Emlyn’s — to record your listening, make notes, answer questions, reflect on what you have learned and create a record of your CPD.

Subscribe to the St Emlyn’s Podcast wherever you get your podcasts.

Trauma 2030

TRAUMA 2030 united experts and innovators to shape the future of trauma care. Over two days, it explored breakthroughs in science, systems, and frontline practice, fostering collaboration across disciplines. The symposium aimed to inspire research, inform policy, and build a bold roadmap for trauma care worldwide.