![]() ![]() Pulseless electrical activity (PEA) is a clinical condition characterized by unresponsiveness and no palpable pulse but with some organized cardiac electrical activity. Asystole is sometimes referred to as a flat line. No unique patterns were associated with the underlying causes or survival.Īetiology Cardiac arrest Causes Defibrillator Pulseless electrical activity Resuscitation.Ĭopyright © 2016 The Author(s). Asystole is a cardiac arrest rhythm in which there is no discernible electrical activity on the ECG monitor. None of the patients with 'normal' PEA survived.Ībnormal ECG patterns were frequent at the early stage of in-hospital PEA. Abnormal ECG patterns were seen in all survivors. Further 7 episodes with a corresponding defibrillator file, but without a reliable cause, were included in analysis of survival. No unique cause-specific ECG pattern could be identified. Ninety percent (46/51) had widened QRS complexes, 63% (32/51) were defined as 'wide-slow' due to QRS-widened bradycardia, and only 6% (3/51) episodes were categorized as normal. The defibrillator was attached after a median of one minute (75th percentile 3min) after the onset of arrest. QRS width and HR were considered to be normal below 120ms and within 60-100 cardiac cycles per minute, respectively.įifty-one episodes fulfilled the inclusion criteria. QRS width, QT interval, Bazett's corrected QT interval, presence of P waves and heart rate (HR) was determined. Prospectively observed episodes of IHCA presenting as PEA between January 2009 and august 2013, with a reliable cause of arrest and corresponding defibrillator ECG recordings, were analysed. The aim of this study was to investigate possible associations between early ECG patterns in PEA and the underlying causes and survival of in-hospital cardiac arrest (IHCA). Pulseless electrical activity (PEA) is an increasingly common presentation in cardiac arrest. Olav University Hospital, Trondheim, Norway.
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