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.
Yes, the transient increases in creatinine can be caused by dehydration. Dehydration generally causes BUN levels to rise more than creatinine levels. This causes a high BUN-to-creatinine ration.While kidney disease or blockage of the flow of urine from your kidney causes both BUN and creatinine levels to rise. So a BUN-to-creatinine ratio can help doctor check for problems, such as dehydration.es, the transient increases in creatinine can be caused by dehydration. Dehydration generally causes BUN levels to rise more than creatinine levels. This causes a high BUN-to-creatinine ration.