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.
Ascending Aorta - initial part of the aorta that begins from the aortic valve and extends from the left ventricle of the heart to the aortic arch. Coronary Arteries - arteries branching from the ascending aorta to supply oxygenated blood to the heart wall.
The aorta is the largest and most important blood vessel in the body. Originating from the heart, this aorta transports much-needed nutrients to the chest, abdomen, and legs. An aortic dissection occurs when the inner lining of the artery ruptures. Blood then floods the tear resulting in the separation (dissection) of its inner and central layers. If blood overflows beyond the outer wall of the aorta, aortic dissection can often result in death. Aortic dissection represents the most frequent trauma of the aorta and is 2-3 times more prevalent than abdominal aortic tearing.