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Flashcards in Arrhythmias Deck (13):

Are arrhythmias only seen in diseased hearts?

No healthy too, sinus arrhythmia is an example of that


What are some causes of an arrhythmia?

Heart defects (congenital)
Myocardial ischemia (anaerobic respiration and fixed acid production)
MI if in vicinity of conducting system
Fluid-electrolyte imbalance


What is the characteristic of atrial flutter?

The rate is abnormal but the contractions are regular and organized


What is the ratio of atrial contractions to ventricle contractions in atrial flutter?

2:1 about 300:150


What are the characteristics of atrial fibrillation? Touch on atrial and ventricle characteristics.

Irregular and uncontrolled contractions around 400-600 bpm, ventricle rate is irregular and rapid at about 80-180 bpm


What four types of arrhythmias are there?

Atrial flutter
Atrial fibrillation
Heart block
Ventricular fibrillation


What is heart block?

Abnormal or no impulse conduction from atria to ventricles


What is first degree heart block?

There is delayed conduction from atria to ventricles with a regular rhythm


What is second degree heart block?

Intermittent failure of conduction from atria to ventricles


What is third degree heart block?

No conduction goes from atria to ventricle, there is a completely separate rhythm for atria and for ventricles
2 independent rhythms


What are the characteristics of ventricular fibrillation?

Instead of the ventricles contracting they quiver/shake leading to death in minutes due to no blood circulating through the body


How do you treat arrhythmias?

Depends on the type
Drugs from class I-IV
Ablation (removes problematic tissue resulting from an MI)
And defibrillation if it is ventricular fibrillation in order to reset sinus rhythm


What is an arrhythmia?

Abnormal alteration in heart rate and rhythm