“…Twenty-one studies defined normal kidney function by serum creatinine. Non-emergent cardiac surgery was the most commonly reported type of surgery (15 studies, 31%), [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] followed by general surgery (12 studies, 25%), [4,[35][36][37][38][39][40][41][42][43][44][45] vascular surgery (9 studies, 18%), [41,[46][47][48][49][50][51][52][53] orthopaedic surgery (9 studies,18%) [54][55][56][57][58][59][60][61] and urologic/gynaecologic surgery (4 studies, 8%)(62-65). Twenty-two of the 49 studies assessed a single surgical procedure, [24-27, 29, 31-34, 39, 41, PLOS ONE https://doi.org/10.1371/journal.pone.0234402.g001 Thirty six studies did not report dialysis modality, eleven studies specifically examined haemodialysis patients only,…”