As Rotorhead said, if you're doing a checkride in a sim, you don't need a medical. If you are doing the ride in an aircraft you only need a third class. The basic standards are found in Part 65. There's a bit more explanation here
https://www.faa.gov/about/office_org...ide/standards/
The only two cardiovascular items are pulse and blood pressure. From my non-medical reading of the standards it appears you are required to have a pulse. And blood pressure at or above 155 over 95 will be an issue. In addition if you are using medications to induce a pulse or keep the blood pressure below 155/95 there will be follow up questions or testing.