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A Journal on Anesthesiology, Resuscitation, Analgesia and Intensive Care

Official Journal of the Italian Society of Anesthesiology, Analgesia, Resuscitation and Intensive Care
Indexed/Abstracted in: Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 2,036

Frequency: Monthly

ISSN 0375-9393

Online ISSN 1827-1596


Minerva Anestesiologica 2010 May;76(5):316-24


Kidney instant monitoring (K.IN.G®): a new analyzer to monitor kidney function

Caironi P. 1,2, Langer T. 1, Taccone P. 2, Bruzzone P. 2, De Chiara S. 2, Vagginelli F. 2, Caspani L. 2, Marenghi C. 2, Gattinoni L. 1,2

1 Department of Anesthesiology, Intensive Care Unit and Dermatological Sciences, Fondazione IRCCS - Ospedale Maggiore Policlinico, Mangiagalli, Regina Elena, University of Milan, Milan, Italy;
2 Department of Anesthesiology, Resuscitation and Pain Therapy, Fondazione IRCCS - Ospedale Maggiore Policlinico, Mangiagalli, Regina Elena, Milan, Italy

AIM: The key role of the kidney in the regulation of body fluids and acid-base status is well known. Nonetheless, urine analysis has not received great attention in critically ill patients, likely due to the common practice of only analyzing 24-hour collected specimens. We hypothesized that the kidney may react more rapidly to minimal hemodynamic and acid-base status variations than can be assessed by a 24-hour analysis. Accordingly, we developed and tested a urine analyzer, allowing quasi-continuous urinary analysis.
METHODS: A novel analyzer (Kidney INstant monitorinG - K.IN.G®) was developed that allows non-invasive, quasi-continuous analysis of urine pH, sodium, chloride, potassium and ammonium levels. Analytic measurement accuracy was calculated for urine samples of patients admitted to ICUs as well as medical staff, using standard techniques as references. For clinical investigation, approximately 200 patients were connected to the analyzer after ICU admission until discharge. Clinically relevant parameters were recorded. Here, three cases are presented.
RESULTS: For each analytic parameter, the accuracy of measurements obtained with the K.IN.G® analyzer appeared to be acceptable as compared to those of the reference techniques. In case 1, urine analysis revealed increased urinary sodium and chloride excretion strictly in parallel with mean arterial pressure, and increased ammonium excretion which was associated with moderate hypercapnia. Case 2 showed increases in urinary pH and sodium and chloride levels following awakening after sedation suspension. In case 3, urine analysis revealed an impairment of renal concentrative power, which was associated with hypovolemia.
CONCLUSION: The K.IN.G® analyzer, allowing quasi-continuous monitoring of urinary pH and principal electrolyte levels, may represent a novel tool for clinical and research purposes.

language: English


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