Arrhythmias Flashcards
Shockable rhythms
Ventricular tachycardia
Ventricular fibrillation
Non-shockable rhythms
Pulseless electrical activity
Asystole
Narrow complex tachycardias
Atrial fibrillation
Atrial flutter
Supraventricular tachycardia
Broad complex tachycardias
Ventricular tachycardia
SVT with bundle branch block
Treatment of stable AF
Rate control with beta blocker or diltiazem
Treatment of stable atrial flutter
Rate control with beta blocker
Treatment of stable SVT
Vagal manouevres and adenosine
Treatment of stable VT
Amiodarone infusion
Treatment of stable known SVT with BBB
Treat as normal SVT
Atrial flutter
Re-entrant rhythm where electrical signal re-circulates in self-perpetuating loop due to an extra pathway
Atrial contraction rate in atrial flutter
300bpm
Ventricular contraction rate in atrial flutter
150bpm
Signal makes its way into ventricles every second lap due to long refractory period in AV node
Conditions associated with atrial flutter
HTN
IHD
Cardiomyopathy
Thyrotoxicosis
Management of atrial flutter
Rate/rhythm control with beta blockers or cardioversion
Treat reversible underlying cause
Radiofrequency ablation of re-entry rhythm
Anticoagulation based on CHA2DS2VASc score
SVT
Electrical signal re-entering atria from the ventricles
Once signal is back in the atria it travels back through AV node and causes another ventricular contraction
Types of SVT
Atrioventricular nodal re-entrant tachycardia- re-entry point through AV node only
Atrioventricular re-entrant tachycardia- re-entry point is accessory pathway (WPW)
Atrial tachycardia- signal originates in atria somewhere other than sinoatrial node