If a stress echo found no problems, then I would doubt very much if you've had a heart attack. A heart attack that was unknown to you would have left scar tissue, which would alter the way the heart muscle moves. This would be spotted in a stress echo. The two tests are very different, analysing different aspects of the heart. An EKG looks at the electrical activity, controlling the pumping action, while the echo looks at the physical side of the heart. It is now up to the cardiologist to decide what is causing the abnormal EKG and if any medications or intervention is required. The physical side of your heart is fine, and that's the worst of the two to resolve. So, on that front, good news.
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