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 The following is/are true of a descending aoic dissection: and explain in detail?
Descending Aoa dissections Almost always seen in hypeensive patients. Diagnosis is made by locating the tear in the aoa distal to the left subclan aery. Type III dissections may involve only the descending thoracic aoa but can extend the entire length of the aoa.