[Contraindications to DOACs in atrial fibrillation]

Area of Science:

• Cardiology
• Geriatrics
• Pharmacology

Background:

• Atrial fibrillation patients often present with comorbidities increasing bleeding or clotting risks.
• Uncertainty exists regarding anticoagulant use in frail elderly, those with organ impairment, or bleeding history.

Purpose of the Study:

• To clarify anticoagulant indications in atrial fibrillation patients with specific risk factors.
• To guide clinical decision-making for anticoagulant initiation in complex patient subgroups.

Main Methods:

• Review of clinical data and guidelines regarding anticoagulant therapy in atrial fibrillation.
• Analysis of risk-benefit profiles in elderly and comorbid patient populations.

Main Results:

• Anticoagulants are indicated in 'vital elderly' atrial fibrillation patients, with direct oral anticoagulants preferred based on strong evidence.
• Data for other high-risk groups (frailty, kidney/liver impairment, hypertension, bleeding history) may not fully translate to clinical practice.

Conclusions:

• A thorough risk assessment and discussion of treatment pros and cons are essential for anticoagulation decisions in complex atrial fibrillation cases.
• Non-use of anticoagulants is rarely justified, even in patients with increased bleeding risks.