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Asystole (New Latin, from Greek privative a "not, without" + systolē "contraction" [1] [2]) is the absence of ventricular contractions in the context of a lethal heart arrhythmia (in contrast to an induced asystole on a cooled patient on a heart-lung machine and general anesthesia during surgery necessitating stopping the heart).
Following a cardiac flatline a fast intervention is a priority and can affect individual outcomes and recovery. Treatment [14] for cardiac flatline or asystole can involve: CPR (cardiopulmonary resuscitation) Administering a vasopressin such as epinephrine; Trying to identify what could be causing the cardiac flatline in the first place. [15]
In medicine, an agonal heart rhythm is a variant of asystole. Agonal heart rhythm is usually ventricular in origin. Occasional P waves and QRS complexes can be seen on the electrocardiogram. The complexes tend to be wide and bizarre in morphological appearance. [1]
Transcutaneous pacing is no longer indicated for the treatment of asystole (cardiac arrest associated with a "flat line" on the ECG), with the possible exception of witnessed asystole (as in the case of bifascicular block that progresses to complete heart block without an escape rhythm). [4]
Treatment of cardiac arrest includes cardiopulmonary resuscitation (CPR), defibrillation, and advanced cardiac life support (ACLS), and treatment of the underlying cause of arrest. Asystole ("flatline") – Asystole refers to the absence of electrical activity of the heart and is sometimes referred to as a "flatline" because the ...
Where an underlying cause for PEA cannot be determined and/or reversed, the treatment of pulseless electrical activity is similar to that for asystole. [3] There is no evidence that external cardiac compression can increase cardiac output in any of the many scenarios of PEA, such as hemorrhage, in which impairment of cardiac filling is the ...
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If these fail to respond to atropine or there is a potential risk of asystole, transvenous pacing is indicated. The risk factors for asystole include 1) previous asystole, 2) complete heart block with wide complexes, and 3) ventricular pause for > 3 seconds. Mobitz Type 2 AV block is another indication for pacing.