Considerations on exercise stress testing: A personal experience of grey zones

Article history: Received 8 September 2015 Accepted 2 October 2015 Available online 9 October 2015 on Diamond and Forrester work [5]. Anyway I did the test. I first underwent a standard test using a ramp protocol, which is the rule at my institution. I reached 15.6 metabolic equivalents (METs) with a significant down-sloping of ST at peak effort which however normalized after a few second of rest (Fig. 1). I had no symptoms at all. Since I was doubtful about the result of the test I resolved to repeat it