At the time of the second surgery (post-bariatric surgery), 27 patients (90%) presented a discrepancy, corresponding to 30% of the PROT, 20% of the GLU, 13% of the ALB, 7% of the AMYL and LIP and 3% of the TGC, TB, ALT, AST, AF and GGT blood tests. This evidence concerns the gene GPT and atrial fibrillation.