The mortality increase in cardiac surgery patients associated with shrunken pore syndrome correlates with the eGFR cystatin C /eGFR creatinine -ratio
Shrunken pore syndrome (SPS) is a condition in which estimated glomerular filtration rate (eGFR) based upon cystatin C is lower than eGFR based upon creatinine. It has been associated with increased mortality even in the presence of normal GFR in both a cardiac surgical population and a general population. No systematic studies of the variation in eGFR cystatin C /eGFR creatinine -ratio used fo