My mother has had an open heart surgery for valve replacement 12 years back and is under treatment. She recently felt severe headache and CT scan revealed that she has subdural hemorrage. I am attaching the CT scan report along with this. Doctors told that  it will be risky to have a surgery to remove the blood clot as it might interfere woth her heart condition. Is it possible to treat this without any surgery? What are our options? How risky it would be if we have to go for surgery? Thank you!