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 Three weeks after surgery to implant a mechanical aortic valve, a 70-year-old man develops chest pain, fever, and leukocytosis. On examination, the JVP is increased, there is a mechanical S2 sound, and a pericardial friction rub. Which of the following is the most likely diagnosis? and explain in detail?
The principal symptom is the pain of acute pericarditis that usually develops 1-4 weeks following the cardiac surgery but could appear after months. It can also occur after myocardial infarction (Dressler's syndrome) or after trauma to the heart (stab wound, blunt trauma). The syndrome can remit and recur for up to 2 years. The acute symptoms usually subside in 1-2 weeks.