Correcting diffusion artifacts in urinary oxygen tension monitoring
Ali Ramezani, Natalie A. Silverton, Laurence M. Saint-Pierre, Guillaume L. Hoareau, Kai Kuck · 2026
Read Correcting diffusion artifacts in urinary oxygen tension monitoring by Ali Ramezani, Natalie A. Silverton, Laurence M. Saint-Pierre, Guillaume L. Hoareau, Kai Kuck (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13542220.txt.
Description
Ramezani and colleagues fix a measurement problem in a promising kidney monitor. Urine oxygen tension, read from a bladder catheter, could warn of kidney oxygen starvation hours before blood tests react. The reading at the catheter's far end, though, is corrupted: urine dawdles in transit and oxygen leaks through the catheter wall. The distortion is worst when urine flow is low and the patient sickest. Their 2026 physics-based algorithm models both distortions and works backwards to reconstruct the true bladder value.
On a bench rig the correction cut average error from nearly eleven units of pressure to under one. It tightened the agreement band dramatically, while correlation with truth jumped from mediocre to strong in the reported figures. In eight pigs driven through haemorrhagic shock and resuscitation, nearly sixty-nine thousand paired samples showed the same pattern. Bias and absolute error roughly halved, with the largest gains at low flow.
Catalog record
| CREATOR | Ali Ramezani, Natalie A. Silverton, Laurence M. Saint-Pierre, Guillaume L. Hoareau, Kai Kuck |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 142 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |