English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/96531
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

A new device for simple and accurate urinary pH testing by the Stone-former patient

AutorGrases, Felix; Rodriguez, Adrian; Berga, Francisco; Costa-Bauza, Antonia; Prieto, Rafael M.; Burdallo, Isabel; Cadarso, Alfredo; Jiménez Jorquera, Cecilia; Baldi, Antonio; Garganta, Rosendo
Fecha de publicación28-abr-2014
CitaciónSpringerPlus 3(1) : 209- (2014)
ResumenAbstract Purpose Urinary pH is an important factor linked to renal stone disease and a useful marker in the treatment of urolithiasis. Although the gold standard for measuring urinary pH utilizes a glass electrode and a pH meter, at present dipstick testing is largely used to estimate urinary pH. However, the accuracy and precision of this method may be insufficient for making clinical decisions in patients with lithiasis. The aim of this study is to describe a new device for urinary pH testing. Methods The device includes a pH sensor based on differential measurement of an ISFET-REFET pair. The drawbacks associated with this type of configuration, namely short lifetime and manual fabrication, have been overcome in the prototype. An automatic one point calibration is performed when turning on the system. Two buffer solutions were utilized to determine the intra- and inter-day precision of the device. The pH of 30 fresh human urine samples was measured using a pH-meter, a dipstick and the new electronic device. Results In some cases, dipstick measurements differed from those of the pH meter by more than 0.40 units, a clinically relevant discrepancy, whereas none of the measurements made with the new electronic device differed from the results of the pH-meter by more than 0.1 pH units. Conclusions This new electronic device has the possibility to be used by stone-formers to control their urinary pH at home, increasing the tools available for stone prevention and prophylaxis.
Aparece en las colecciones: (IMB) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
2193-1801-3-209.xml36,99 kBXMLVisualizar/Abrir
2193-1801-3-209.pdf606,38 kBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.