Whilst strictly speaking the term supraventricular tachycardia (SVT) refers to any tachycardia that is not ventricular in origin the term is generally used in the context of paroxysmal SVT. Episodes are characterised by the sudden onset of a narrow complex tachycardia, typically an atrioventricular nodal re-entry tachycardia (AVNRT). Other causes include atrioventricular re-entry tachycardias (AVRT) and junctional tachycardias.

vagal manoeuvres: e.g. Valsalva manoeuvre intravenous adenosine 6mg → 12mg → 12mg: contraindicated in asthmatics - verapamil is a preferable option electrical cardioversion

SVT Flashcards by Lena h

definition

Whilst strictly speaking the term supraventricular tachycardia (SVT) refers to any tachycardia that is not ventricular in origin the term is generally used in the context of paroxysmal SVT.
Episodes are characterised by the sudden onset of a narrow complex tachycardia, typically an atrioventricular nodal re-entry tachycardia (AVNRT).
Other causes include atrioventricular re-entry tachycardias (AVRT) and junctional tachycardias.

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Acute management

vagal manoeuvres: e.g. Valsalva manoeuvre
intravenous adenosine 6mg → 12mg → 12mg: contraindicated in asthmatics - verapamil is a preferable option
electrical cardioversion

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Prevention of episodes

beta-blockers
radio-frequency ablation

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SVT Flashcards

(3 cards)