What is the deadliest ECG rhythm?

Ventricular fibrillation, ventricular tachycardia and prolonged pauses or asystole are dangerous. Arrhythmias associated with very low potassium or magnesium or those associated with inherited causes such as QT prolongation are also serious.

What are the normal rhythms of the heart?

For example, a normal heart beats 60 to 100 times per minute in adults. Tachycardia is any resting heart rate over 100 beats per minute (BPM). There are three subtypes of tachycardia: Supraventricular tachycardia occurs in the upper chambers of your heart known as the atria.

What is the shark fin ECG rhythm?

Triangular QRS-ST-T waveform, also known as “shark fin pattern”, is an ECG presentation of ST segment elevation myocardial infarction with a unique wave composed by the QRS complex, the ST segment, and the T wave.

Can you shock a flatline?

Pulseless electrical activity and asystole or flatlining (3 and 4), in contrast, are non-shockable, so they don’t respond to defibrillation. These rhythms indicate that the heart muscle itself is dysfunctional; it has stopped listening to the orders to contract.

What is Brugada pattern in ECG?

Brugada syndrome is a disorder characterized by sudden death associated with one of several electrocardiographic (ECG) patterns characterized by incomplete right bundle-branch block and ST elevations in the anterior precordial leads.

What is a good ECG rate?

A normal ECG is illustrated above. Note that the heart is beating in a regular sinus rhythm between 60 – 100 beats per minute (specifically 82 bpm). All the important intervals on this recording are within normal ranges. 1.

What heart rhythm looks like shark teeth?

Atrial flutter is a supraventricular arrhythmia that is characterized by a “saw-toothed” flutter appearance on the ECG that represents multiple P waves for each QRS complex.

What happens if you shock asystole?

A single shock will cause nearly half of cases to revert to a more normal rhythm with restoration of circulation if given within a few minutes of onset. Pulseless electrical activity and asystole or flatlining (3 and 4), in contrast, are non-shockable, so they don’t respond to defibrillation.