Table 1: Some classifications proposed for post-exodontia bleeding severity in patients on antithrombotic medication.

STUDY POST-EXODONTIA BLEEDING DEFINITION
Ardekian et al.> 2000 Mild: Blood loss <20 ml
Moderate: Blood loss 20-50 ml
Severe: Blood loss >50 ml
Madan et al.> 2005 Severe: Blood loss >30 ml
Vicente-Barrero et al.> 2002 Mild: Bleeding time <5 min
Moderate: Bleeding time ≥5 min
Severe: requiring transfusion
Krishnan et al.> 2008 Severe: Bleeding 30 min after pressure pack applied
Morimoto et al.> 2008 Severe: Bleeding 30 min after pressure pack applied
Nooh 2009 Severe: Bleeding 30 min after pressure pack applied
Cardona-Tortajada et al.> 2009 Severe: Bleeding 10 min after pressure pack applied
Al-Belasy et al.> 2003 Mild: Bleeding time <20 min after pressure pack applied
Moderate: Bleeding time ≥20 min after pressure pack applied with additional use of local haemostatic agents
Severe: requiring suturing, vitamin K administration or transfusion
Lockhart et al.> 2003 Clinically significant:
1. Continues beyond 12 h;
2. Causes the patient to call or return to the dental practitioner or to the accident and emergency department;
3. Results in the development of a large haematoma or ecchymosis within the oral soft tissues; or
4. Requires a blood transfusion.