Fig 1 - available via license: Creative Commons Attribution 4.0 International
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-The appearance of the ventricular fibrillation waveform (VF) in six different leads of the surface electrocardiogram. First, VF is induced using a T-wave shock procedure. After about 10 s of VF, the arrhythmia is terminated by an electrical shock of the ICD.
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Aim
In cardiac arrest, ventricular fibrillation (VF) waveform analysis has identified the amplitude spectrum area (AMSA) as a key predictor of defibrillation success and favorable neurologic survival. New resuscitation protocols are under investigation, where prompt defibrillation is restricted to cases with a high AMSA. Appreciating the variabilit...
Context in source publication
Context 1
... (Minneapolis, Minn, USA), St Jude Medical (St. Paul, Minn, USA) or Biotronik (Berlin, Germany) ICD, cardiac resynchronisation therapy-defibrillator systems with transvenous single coil leads, or subcutaneous ICD-systems (s-ICDs, Boston Scientific, Marlborough, MA, USA). An example of VF induction and termination by an ICD shock is shown in Fig. 1. Defibrillation testing was performed after ICD implantation to test the ability of the implanted device to sense, detect and terminate VF appropriately, according to our local hospital protocol. After sedation with propofol, VF was induced using T-wave shock, direct current pulses or 50 Hz burst pacing (in case of s-ICDs). The ...
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Background
Amplitude spectral area (AMSA) predicts termination of fibrillation (TOF) with return of spontaneous circulation (ROSC) and survival in adults but has not been studied in pediatric cardiac arrest. We characterized AMSA during pediatric cardiac arrest from a Pediatric Resuscitation Quality Collaborative and hypothesized that AMSA would be...
