common cardiac arrhythmias 2 the complex arrhythmias mark earley, st bartholomew’s hospital
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COMMON CARDIAC ARRHYTHMIAS 2the complex arrhythmias
COMMON CARDIAC ARRHYTHMIAS 2the complex arrhythmias
Mark Earley, St Bartholomew’s Hospital
Atrial Fibrillation (AF)Atrial Fibrillation (AF)
Paroxysmal AFParoxysmal AF
AF – modern terminologyAF – modern terminology
FIRST EPISODE of AF
RECURRENT EPISODE of AF
PAROXYSMAL AF PERSISTENT AF
PERMANENT AF SINUS RHYTHM
AF - aetiologyAF - aetiology
AF – mechanism - chaosAF – mechanism - chaos
Mechanism of AF: focal v re-entryMechanism of AF: focal v re-entry
FOCAL RE-ENTRY (Circus movement)
1959-1964 Moe’s Hypothesis multiple random re-entry wavefronts
Mechanism - focal
Spontaneous initiation of atrial fibrillation by ectopic beats originating in the pulmonary veins. NEJM 1998; 339:659-66
Mechanism of AFMechanism of AF
Focal ‘triggers’
Multiple wavefronts
Mechanism of AFMechanism of AF
PAROXYSMAL
PERSISTENT
PERMANENT
Preexcited AFPreexcited AF
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