Ed34 is correct and of course this can happen! I have lived for years with angina caused by both heart vessel spasm and a dysfunction of the microvessels of the heart. My tests were fine for years. Spasms are life threatening, can cause angina, and heart attack and it's my recommendation that you stay on medication to settle down the potential spasm/angina. Angina can sometimes show on ekg and sometimes not depends on WHEN the heart decides to reflect the angina. I have seen patients with ekgs indicating angina but they didn't complain! Don't rely just on test results, listen to your signs, and don't dismiss symptoms even when a medical professional reads a test and states no angina as per the testing findings. Statins have been shown to act on vessel walls and help stabilize them also.I use nitro to help me with angina.So don't be mad;continue with lifestyle and diet changes and get help AGAIN if you continue to experience angina,especially on exertion. Joan.
There are two types of angina, stable and unstable. With stable angina it is easy to diagnose and predict when symptoms will occur. It is also usually treatable with medication, PCI or bypass. Lifestyle and diet change can also have a big impact on relieving symptoms. With unstable angina it is more difficult to diagnose because symptoms can be very intermittent. This condition is basically caused by coronary arteries going into a spasm, squeezing and restricting blood flow. It's one of those conditions where many people visit hospital, have tests and the symptoms dont return. A bit like the dreaded tv engineer turning up and the tv decides it wants to work.
Some people have just a few spasms and they never return, whereas others seem to find them a nuisance for many years. It is unknown why this condition occurs but medication is available although it doesn't have the same effects with all patients.