Atrial fibrillation occurring transiently with stress

Area of Science:

• Cardiology
• Internal Medicine
• Geriatrics

Background:

• Atrial fibrillation can manifest during acute medical events or post-surgery.
• The origin of this transient atrial fibrillation is debated: a reversible stressor or underlying paroxysmal atrial fibrillation.

Purpose of the Study:

• To review the incidence and recurrence of atrial fibrillation occurring transiently with stress (AFOTS).
• To clarify whether AFOTS represents a reversible phenomenon or necessitates chronic management, including anticoagulation.

Main Methods:

• Review of published studies reporting AFOTS incidence and recurrence.
• Analysis of data from patients with acute medical illness and those undergoing noncardiac surgery.

Main Results:

• AFOTS incidence ranges from 1-44% in acute illness and 1-35% post-surgery, with higher rates in critically ill patients.
• Atrial fibrillation recurrence after AFOTS is reported in 55-68% within 5 years for medical illness and 37% within 1 year for noncardiac surgery.
• Existing studies are limited by retrospective design and low-sensitivity detection methods.

Conclusions:

• AFOTS is a frequent occurrence in hospitalized or post-operative patients.
• High recurrence rates suggest AFOTS may signal underlying atrial fibrillation requiring long-term management.
• Further prospective studies with sensitive detection methods are crucial to understand the link between AFOTS and clinical atrial fibrillation.