[Spanish bottled and tap water analysis and their relation with urinary lithiasis].
OBJECTIVE
To perform a chemical analysis of all the available waters in Spain with the idea of offering consume recommendations to lithiasic patients.


METHODS
Information research of the chemical composition of Spanish tap and bottled water in publications, supermarkets and Internet. A descriptive study, and a correlation study between water components by means of Pearson test were performed.


RESULTS
Information about composition from tap water of most of the main Spanish cities and 85 bottled water brands was found. A significant correlation between calcium and magnesium concentration (p = 0.0001) and high correlation between bicarbonate and sodium concentration (p = 0.0001, Pearson coefficient 0.958) was found. It is also offered water classifications according to calcium, bicarbonate, sodium and magnesium concentrations.


CONCLUSIONS
A guideline about water election for lithiasic patients is offered according to their geographical origin and dietetic preferences, mainly lactic consume.
Millán Rodríguez
Félix
F
Servicio de Urología, Fundació Puigvert, Barcelona, España. fmillan@fundacio-puigvert.es
Gracia García
Silvia
S
Jiménez Corro
Rocío
R
Serrano Liesa
Miriam
M
Rousaud Barón
Ferran
F
Sánchez Martín
Francisco
F
Angerri Feu
Oriol
O
Martínez Rodríguez
Roberto
R
Villavicencio Mavrich
Humberto
H
D001639:Bicarbonates / Q000032:analysis; D002118:Calcium / Q000032:analysis; D004326:Drinking; D006801:Humans; D013030:Spain; D052878:Urolithiasis / Q000517:prevention & control*; D014867:Water / Q000032:analysis*
D001639:Bicarbonates; D014867:Water; D002118:Calcium