Usefulness Score: 3.5/5
Gaspari R, et al.
Resuscitation. 2016 Sep 28;109:33-39.
This prospective, per-protocol observational study is now the largest study on the point of care ultrasound in cardiac arrest (specifically PEA/asystole). It demonstrates that the presence of cardiac activity is the variable most associated with survival in cardiac arrest (more than bystander CPR, for example), with an OR of 3.6 for survival to admission, and 5.7 for survival to discharge. Ultrasound may also allow one to diagnose tamponade or right heart strain (due to massive PE) as potential causes of an arrest. Hence, it should likely be included as a part of any PEA/asystole resuscitation algorithm.
However, it should be noted that the strength of this study is limited by the potential selection bias that occurred with convenience sample enrolment, as well as the performance bias that resulted from it being unblinded (allowing clinicians to alter their care…