Our guest, Eric Steffel, is a paramedic that reached out wanting to discuss active exhalation.  It goes by many other names including "external chest compressions" or "lateral chest compressions" as some sources have indicated.  We decided not to use the term "compression" though because this can quickly lead to someone thinking this is a chest compression similar to what is performed in cardiopulmonary resuscitation (CPR).  Eric prefers "active exhalation" and (understanding its potential limitations) is what we use for this podcast to define this procedure.