Given the task definition and input, reply with output. In this task, you will be given a single sentence or a set of sentences. You have to recognize the name of the disorder or disease. Disease is a disorder of structure or function in a human, animal, or plant, especially one that produces specific symptoms or that affects a specific location and is not simply a direct result of physical injury. Although there might be several correct answers, you need to write one of them.

 Oral pre - treatment with PK ( 80 mg kg ( - 1 ) day ( - 1 ) for 15 days ) significantly prevented the isoproterenol - induced myocardial infarction and maintained the rats at near normal status .

myocardial infarction