Coagulation Testing For New Oral Anticoagulants.

Area of Science:

• Cardiology
• Pharmacology
• Clinical Chemistry

Background:

• Atrial fibrillation (AF) is a prevalent cardiac arrhythmia associated with increased stroke and mortality risks.
• New oral anticoagulants (NOACs) provide an alternative to vitamin K antagonists for stroke prevention in non-valvular AF.
• Unlike traditional anticoagulants, NOACs typically do not necessitate routine coagulation monitoring.

Purpose of the Study:

• To review and discuss coagulation testing methods relevant to novel oral anticoagulants (NOACs).
• To highlight clinical scenarios where quantitative assessment of NOACs may be necessary.

Main Methods:

• Literature review focusing on coagulation assays and NOACs.
• Analysis of current guidelines and research on anticoagulant drug monitoring.

Main Results:

• While routine monitoring is not standard, specific situations like major bleeding, urgent surgery, or renal/hepatic impairment may require assessing NOAC drug levels.
• Various coagulation tests can be adapted or are specific for quantifying the anticoagulant effect of different NOAC classes.

Conclusions:

• Coagulation testing for NOACs is crucial in select clinical circumstances.
• Understanding available testing methodologies ensures appropriate management in emergencies and in patients with organ dysfunction.