The estimation of glomerular filtration in acute and critical illness: Challenges and opportunities.

Recent events have made it apparent that the creatinine based estimating equations for glomerular filtration have their flaws. Some flaws have been known for some time; others have prompted radical modification of the equations themselves. These issues persist in part owing to the behaviour of the creatinine molecule itself, particularly in acute and critical illness. There are significant implications for patient treatment decisions, including drug and fluid therapies and choice of imaging modality (contrast vs. non-contrast CT scan for example). An alternative biomarker, Cystatin C, has been used with some success both alone and in combination with creatinine to help improve the accuracy of particular estimating equations. Problems remain in certain circumstances and costs may limit the more widespread use of the alternative assay. This review will explore both the historical and more recent evidence for glomerular filtration estimation, including options to directly measure glomerular filtration (rather than estimate), perhaps the holy grail for both Biochemistry and Nephrology.

Living donor kidney transplantation: Let's talk about it.

Transplantation is the preferred treatment option for end-stage renal disease as it offers superior results and patient reported outcomes in comparison to dialysis. Patients treated with a transplant live longer, healthier and more independent lives. Transplantation is also more cost-effective, reducing the overall burden of renal disease. Despite the rising incidence of renal failure, the uptake of living donor kidney transplantation has been static across the UK for several years. Among transplantation, living donation offers a number of advantages compared with deceased donor transplantation. The procedure is more likely to be performed pre-dialysis and the elective nature allows for better perioperative planning. Awareness for living donation processes among healthcare professionals, patients and the public appears to be poor. Sharing information regarding the process will help educate colleagues, dispel myths and, crucially, allow patients the opportunity to talk about this treatment option with their hospital doctor.

An acute presentation of visceral artery aneurysm.

A 56-year-old patient presented with shock and severe abdominal pain. Initial blood tests, erect chest x-ray and focused ultrasound were not diagnostic. CT imaging demonstrated bleeding from a superior mesenteric artery aneurysm. Operative treatment with ligation of the bleeding point and packing of the abdomen successfully controlled the bleeding. He eventually made a full recovery.