In the small bowel, 30 to 40% of bleeding is caused by abnormal blood vessels in the wall of the small bowel. These abnormal blood vessels have many names, including angioectasias, angiodysplasias, or arteriovenous malformations (AVMs).he small bowel (or small intestine) is the longest portion of the gastrointestinal (GI) tract. It is called small because it is thin or narrow compared with the large bowel (also known as the colon), but it is much longer than the large bowel (14 feet on average).
Don't forget the multiple causes of an elevated d-dimer: 1  PE/DVT. 2  Sepsis/infection. 3  Malignancy. 4  Renal disease. 5  Pregnancy. 6  MI. 7  Stroke.
The normal amounts for D-dimer in the blood should be around 0.5 mg/l of blood or 500 ng/ml of blood.A normal D-dimer test result will reveal a negative result, which indicates that thrombosis has not occurred.eople whose D-dimer levels are within the normal range will not likely face life-threatening situations that will result from abnormal D-dimer levels. Having normal D-dimer values are indicative that the bodyâs healing system by means of blood clotting is doing well.