You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which one of the following excludes history of transient ischaemic attack? and explain in detail?
(A) Haemorrhage > An important cause of transient cerebral ischemia is embolization.> In many patients with these attacks, a source is readily apparent in the heart or a major extracranial artery to the head & emboli sometimes are visible in retinal arteries> Moreover, an embolic phenomenon explains why separate attacks may affect different parts of the territory supplied by the same major vessel.> Cardiac causes of embolic ischemic attacks include rheumatic heart disease, mitral valve disease, cardiac arrhythmia, infective endocarditis, atrial myxoma, and mural thrombi complicating myocardial infarction.> Atrial septal defects and patent foramen ovale may permit emboli from the veins to reach the brain ("paradoxical emboli").> An ulcerated plaque on a major artery to the brain may serve as a source of emboli.> Patients with AIDS have an increased risk of developing transient ischemic deficits or strokes.