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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).
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] Treatment decisions will depend on where an individual is when they go into asystole.
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.
Image credits: Imafish12 #5. ICU RN for 9 years here. We don’t “shock” asystole, aka a “flatline” heart rhythm. We do manual chest compressions and we give them epinephrine (adrenaline ...
Arrhythmias such as asystole or bradycardia are more likely in children, in contrast to ventricular fibrillation or tachycardia as seen in adults. [ 30 ] Additional causes of sudden unexplained cardiac arrest in children include hypertrophic cardiomyopathy and coronary artery abnormalities. [ 161 ]
A frequent type of syncope, termed vasovagal syncope is originated by intense cardioinhibition, mediated by a sudden vagal reflex, that causes transitory cardiac arrest by asystole and/or transient total atrioventricular block. [1] [2] It is known as “Vaso-vagal Syncope”, “Neurocardiogenic Syncope” or “Neurally-mediated Reflex Syncope ...
In medicine, an agonal heart rhythm is a variant of asystole. Agonal heart rhythm is usually ventricular in origin. Agonal heart rhythm is usually ventricular in origin. Occasional P waves and QRS complexes can be seen on the electrocardiogram .
Injections of atropine are used in the treatment of symptomatic or unstable bradycardia. Atropine was previously included in international resuscitation guidelines for use in cardiac arrest associated with asystole and PEA but was removed from these guidelines in 2010 due to a lack of evidence for its effectiveness. [22]