Thiamine Overdose. Overdosing on thiamine, or vitamin B-1, is rare but can cause severe symptoms. Mild symptoms of an overdose include weakness and a headache, the American Pregnancy Association reports. In some cases, high vitamin B-1 levels can cause a rapid, irregular heart beat and low blood pressure.
Descending Aorta - major portion of the aorta that extends from the aortic arch to the trunk of the body. It forms the thoracic aorta and abdominal aorta. Thoracic Aorta (Chest Region): Visceral Branches - supply blood to the lungs, pericardium, lymph nodes, and esophagus.
The aorta is the largest blood vessel in the body. It carries freshly oxygenated blood out of the heart so that it can be distributed to the circulatory system. In most people, the aorta follows a relatively straight path, but in people with tortuous aorta, the vessel may be twisted or distorted.EarlyForest -- Sometimes tortuous aortas can indirectly cause abdominal aortic aneurysms, like pharmchick78 was talking about. Since a tortuous aorta is abnormal, sometimes the wall of the aorta can be weaker, leading to an aortic aneurysm, or, worst case scenario, an aortic aneurysm rupture.