Time course of cDPP3 in patients undergoing open (open) or endovascular (endo) thoraco-abdominal aortic aneurysm repair. Only at ICU admission were significant differences between open and endovascular surgery observed (P < 0.001; P > 0.2 for all other time points). The sampling time points were as follows: presurgery (pre), at admission to the ICU (adm), 12 h post-ICU admission (12 h), 24 h post-ICU admission (24 h) and 72 h post-ICU admission (72 h). The number of patients per time point is assigned as ‘n’. On ICU admission, the blood drawn from n = 1 patient was missing; patients had died prior to the blood draw at 24 h (n = 2), 48 h (n = 1) and 72 h (n = 1); an additional n = 2 patients had missing blood draws at 72 h. cDPP3: circulating dipeptidyl peptidase 3; ICU: intensive care unit.