Study selection
The systematic search revealed a total of 5843 papers. After duplicates were excluded, 3435 papers remained for review. Based on title and abstract review, irrelevant publications for those that did not satisfy our inclusion criteria were not considered, leaving 9 articles6,12-19 for full-text review. Following the full-text assessment of these articles, studies that lacked data on outcomes of FFR guided CABG, or which did not meet our inclusion criteria were excluded (Figure 1) leaving a total of 6 articles12-17 to be analysed.