$chest compression fraction$

Therefore, rescuers can analyse the underlying rhythm during compressions, eliminating the pause in compressions for rhythm analysis. The bottom trace is the filtered trace, with the artefact of compressions removed. The top trace is the ECG trace with the artefact from compressions. C) The AFT defibrillator demonstrates two traces during compressions. This necessitates a pause in compressions to check the underlying rhythm before shock is delivered. B) However, when there are ongoing compressions, artefact is seen in the trace, and the underlying rhythm cannot be reliably deduced. A) On a standard defibrillator, when there are no ongoing compressions, the rhythm can successfully be read, as in the case of ventricular fibrillation. Several pauses occur when CPR is performed according to current guidelines: CPR is paused when the patient is being ventilated with a mask, during rhythm analysis (due to motion artefact during chest compressions ), and when defibrillation is being performed.Ĭomparing standard defibrillator to defibrillator equipped with AFT technology. Reference Cheskes, Schmicker and Christenson 6, Reference Cheskes, Schmicker and Verbeek 7 Reference Christenson, Andrusiek and Everson-Stewart 5 In particular, reduction in the peri-shock pause (the pause in chest compressions immediately before and after defibrillatory shock) has recently been shown to be associated with improved survival in OHCA.

$chest compression fraction$

Reference Field, Hazinski and Sayre 3, Reference Paradis, Martin and Rivers 4 Previous work has demonstrated an association between increased chest compression fraction (CCF: the percentage of time during cardiac arrest that is spent performing chest compressions) and increased likelihood of discharge from the hospital in out-of-hospital cardiac arrest (OHCA). Reference Cunningham, Mattu and O’Connor 1, Reference Berg, Sanders and Kern 2 Guidelines have emphasized minimizing CPR pauses with the intent of maintaining coronary perfusion pressure and increasing the likelihood of return of spontaneous circulation. Pauses in chest compressions during cardiopulmonary resuscitation (CPR) result in the reduction of perfusion pressure to vital organs.

$chest compression fraction$

Chest compression fraction