High sensitivity troponin T (hs-TnT; ng/L) levels at baseline and 6–8 h following the procedure are given from left to right for the implant only group, the implant and testing group and testing alone groups. The bars represent median and interquartile range. In the implant group, there was a 96% increase in median hs-TnT at 6–8 h (P = 0.002), in the implant and testing group there was a 161% increase in median hs-TnT at 6–8 h (P = 0.005), and in the testing only group there was no change in the median hs-TnT at 6–8 h (P = 0.90).