What if there is no prospective, double blind, randomised trial?

Different road maps for ventricular tachycardia ablation

“…Moreover, there was considerable overlap in patients in the image-guided VT ablation group, since four out of five studies (two from Barcelona, two from Bordeaux) were from the same cardiology centre and CMR data were available in only a subset of patients, with the remainder undergoing CT or echocardiography. For further determination as to whether image-guided VT ablation can be considered a superior approach compared to conventional VT ablation, a more stringent, randomised comparison of different strategies is needed [ 10 ]. Nevertheless, the authors should be commended for their informative and hypothesis-generating efforts to increase our understanding of strategies aimed at improving VT ablation therapies.…”