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“ A Bloody Mess”. Registrar: Dr M Harmse Consultant: Dr J v Rensburg. CASE. Mrs M, 58 y old lady from Vryburg AML with multilineage dysplasia Admitted for second induction Complicated by DVT, started on Warfarin INR >8. Phoned by sister: trauma disorientated. AAICH
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“ A Bloody Mess” Registrar: Dr M Harmse Consultant: Dr J v Rensburg
CASE Mrs M, 58 y old lady from Vryburg • AML with multilineage dysplasia • Admitted for second induction • Complicated by DVT, started on Warfarin • INR >8
Phoned by sister: • trauma • disorientated
AAICH (Anticoagulant associated intracerebral hemorrhage)
INTRODUCTION • Wider use of Warfarin: -Warfarin related deaths -Permanent disability -Mayo clinic Proceedings, Jan 2007; 82(1):82-89
INCIDENCE OF AAICH • -5x more in period 1988 - 1999 -Paralleled 4X higher warfarin prescribed in same period • -Most episodes of AAICH during therapeutic INR ( 2- 3) -Birmingham atrial fibrillation treatment of the aged study, Lancet 2007; 370;493-503
AAICH RISK FACTORS • ESTABLISHED -INR level -Hypertension (Systolic > 160 mmHg) -Advange age (> 75 years) -History of cerebrovascular disease
AAICH RISK FACTORS • POSSIBLE - Aspirin use -Asian / Mexican Americanethnisity -Tabaccosmoking -Heavy Alcohol consumption
WARFARIN, mechanism of action IX VII X II
1) ANTICOAGULATION 2)ANTIPLATELETS
1) ANTICOAGULATION 2)ANTIPLATELETS REVERSAL OF ANTICOAGULATION
Additional options Management of Hpt Not a independent predictor of outcome Keep systemic BP < 180 mmHg (no data available)
Should warfarin be restarted for AF/PV? -Mayo clinic proceedings, Jan 2007;82(1);82-92
Warfarin: prevalance Management of uncontrolled INR AAICH: Emergency! Restart?