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.
High levels of ketones in blood causes the blood to become more acidic, which results in a chemical imbalance. slide 2 of 7. Causes of High Ketone Levels The primary cause of high levels of ketones in blood is poor management of diabetes. However, there are three basic triggers that can result in this condition. Sometimes, skipping a meal or not eating while you are sick can cause high levels of ketones.