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10. Arrhythmias Flashcards Preview

ESA 2- Cardiovascular System > 10. Arrhythmias > Flashcards

Flashcards in 10. Arrhythmias Deck (5)
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1

What is the normal resting HR?

60-100 bpm (varies according to physical fitness)

2

What are the terms used to describe abnormally slow or fast heart rate?

- bradychardia (<60 bpm)
- tachycardia (>100 bpm)

3

What is the difference between ventricular and supraventricular tachycardia?

- ventricular = tachycardia originates in ventricles
- supraventricular = tachycardia originates in atria or atrio-ventricular conduction system

4

What can ventricular tachycardia lead to?

ventricullar fibrillation

5

What is ventricular fibrillation and why is it a medical emegency?

Impulses from numerous ectopic sites in ventricular muscle... abnormal, chaotic, fast ventricular depolarisation... no co-ordinated contraction - ventricles quiver... no CO... cardiac arrest.

Decks in ESA 2- Cardiovascular System Class (25):

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