A 78yo lady on warfarin for atrial fibrillation lives in a care home. She presents with hx of
progressive confusion for three days. She was also noticed to have bruises on her arms. INR = 7.
What is the most probable dx?
a. Alzheimers
b. Delirium
c. Subdural hemorrhage
d. Vascular dementia
e. Pick’s dementia
Ans. The key is C. Subdural haemorrhage. [Age 78 yrs, living in a care home where unnoticed trivial
injury is possible (like fall), warfarine and high INR is potential risk factor of subdural haemorrhage
suggested by bruises on arms also].