This is demonstrative of ventricular standstill. The valves are moving due to ongoing blood flow but there is no ventricular movement driving that flow. From top to bottom we are looking at the right ventricle (thin walled) followed by the left (thick walled).
The literature indicates that ventricular standstill is not a definitive indicator of mortality. In a systematic review published in Academic Emergency Medicine (1), the authors concluded that an absence of cardiac activity reveals a 'significantly lower (but not zero)' chance of the patient gaining ROSC. It goes on to highlight how it should be used in conjunction with clinical findings to help predict patient outcome.
Having said this, a narrower study from 2001 demonstrated that 100% of one hundred and thirty six patients who were found to be initially in ventricular standstill went on to die in ED despite resuscitation efforts (2). It does however acknowledge the limitations of being a small study.
In the context of our patient with a long downtime, no identified reversible cause and an ominous blood gas, the image of their heart with no functional movement helped us to make a communal decision to cease further resuscitation attempts.
1) Academic Emergency Medicine. 2012 Bedside focused echocardiography as predictor of survival in cardiac arrest patients: a systematic review. Blyth et al. Oct;19(10):1119-26
2) Academic Emergency Medicine. 2001 Outcome in Cardiac Arrest Patients Found to Have Cardiac Standstill on the Bedside Emergency Department Echocardiogram. Blaivas, M. Fox, J. 10.1111/j.1553-2712.2001.tb00174.x
A good summary of uses of echo in emergencies can be found here:
By Theo Muth