Review Article

Direct-Acting Oral Anticoagulants: Practical Considerations for Emergency Medicine Physicians

Table 1

Properties of DOACs [1316, 28].

DabigatranRivaroxabanApixabanEdoxaban

ClassOral thrombin inhibitorOral factor Xa inhibitorOral factor Xa inhibitorOral factor Xa inhibitor

FDA-approved indicationReduction of stroke and SEE risk for patients with NVAF; treatment of DVT and PE following 5–10 days of parenteral anticoagulant; and reduction of recurrence risk for DVT and PEReduction of stroke and SEE risk for patients with NVAF; treatment of DVT and PE and reduction of recurrence risk for DVT and PE; prophylaxis of DVT in patients undergoing knee or hip replacement surgeryReduction of stroke and SEE risk for patients with NVAF; treatment of DVT and PE and reduction of recurrence risk for DVT and PE; prophylaxis of DVT in patients undergoing knee or hip replacement surgeryReduction of stroke and SEE risk for patients with NVAF and treatment of DVT and PE following 5–10 days of parenteral anticoagulant

Time to (h)1-22–43-41-2

Half-life (h)12–175–131210–14

Renal elimination80% of absorbed dose66% of oral dose27% of absorbed dose50% of absorbed dose

TransportersP-gpP-gp/BCRPP-gp/BCRPP-gp

Cytochrome P450 metabolismNoYesYesMinimal

Bioavailability (%)3–7≥805062

Potential drug interactionsPotent P-gp inhibitors and P-gp/CYP3A4 dual inducer rifampin Potent dual CYP3A4 and P-gp inhibitors or inducersPotent dual CYP3A4 and P-gp inhibitors or inducersPotent P-gp inhibitors and P-gp/CYP3A4 dual inducer rifampin

Edoxaban should not be used in NVAF patients with creatinine clearance >95 mL/min [16].
DOACs are substrates of these transporters.
For 10 mg dose. For 20 mg dose in the fasted state, it is 66%.
For doses up to 10 mg.
BCRP, breast cancer resistance protein; , maximum observed plasma concentration; CYP3A4, cytochrome P450 3A4 enzyme; DOACs, direct-acting oral anticoagulants; DVT, deep-vein thrombosis; NVAF, nonvalvular atrial fibrillation; P-gp, P-glycoprotein; PE, pulmonary embolism; SEE, systemic embolic event; VTE, venous thromboembolism.