Prothrombin Time (PT) is a blood test that measures how long it takes the blood to clot and is used to determine if there are bleeding problems and whether medications such as Coumadin which prevent blood clots are working.) On the third day of Plaintiff's hospital admission, testing revealed an International Normalised Ratio (INR) value of 9.91. The normal INR therapeutic range is 2 to 3. Mr. Jensen's INR level was critical. The Coumadin was dinscontinue, and a second Prothrombin Time test later that day revealed an INR value of 9.15, another critical value. That evening, a CT Myelogram revealed an epidural hematoma in the lumbar spine starting at the L3 and extending to L5. By the fourth morning of Plaintiff's hospital admission, he was being transfused with fresh frozen plasma and being administer with Vitamin K. More than 75 hours after being admitted to the hospital, Plaintiff underwent surgery for laminectomies of L2 through L5 and the evacuation of an epidural hematoma. Plaintiff claimed that the Defendants were negligent when failing to timely diagnose and treat the large epidural hematoma that extended in the spinal canal from L2 to L5, and as a direct result of that failure, Plaintiff suffers from permanent paraplegia with significant pain and impairment of sensation, strength and permanent incontinence of bowel and bladder. Defendants contested liability, causation, and the value of Plaintiff's damages.