Trigger-Induced Atrial Fibrillation (AF): Key Clinical Messages
Trigger-Induced Atrial Fibrillation (AF): Key Clinical Messages
• Not all new-onset AF is primary AF. Acute or chronic reversible conditions may trigger the arrhythmia.
• Always search for the underlying trigger rather than focusing solely on rate or rhythm control.
• Common acute triggers include:
* Sepsis
* Pneumonia and other infections
* Urinary tract infection
* Dehydration
* Electrolyte disturbances
* Acute myocardial infarction
* Surgery
* Hyperthyroidism
• Common chronic triggers include:
* Obesity
* Obstructive sleep apnea
* Hypertension
* Diabetes mellitus
* Heart failure
* Inflammatory bowel disease
* Excess alcohol consumption
• A focused history and physical examination are essential to identify potentially reversible causes.
• Anticoagulation should be based primarily on CHA₂DS₂-VASc (CHA₂DS₂-VA in ESC 2024), with individualized consideration of bleeding risk and whether the AF episode was trigger-induced.
Take-home message
Trigger-induced AF should be viewed as a clinical warning sign rather than an isolated arrhythmia. Identifying and treating the underlying trigger, together with long-term cardiovascular risk management, is essential to reduce recurrence and improve patient outcomes.
Source : European Journal of Internal Medicine. Published online 14 April 2026.
https://www.sciencedirect.com/science/article/pii/S0953620526001810
