title: [The influence of a combined low dose oral contraceptive containing drospirenone on electrolite equlibrum and renal function in young woman].
abstract: Drospirenone--a new 17 alpha-spironolactone derivate is a progestin with aldosterone receptor antagonism activity (PARA) thanks to which it decreases sodium and fluid retention.
  
  
  OBJECTIVE
  The aim of our study was to estimate the electrolytes level and renal function parameters in blood during the therapy of low dose oral contraceptive containing drospirenone.
  
  
  METHODS
  The group consisted of 22 young women in mean age 25,9 +/- 4,3 years, without contraindications to hormonal contraception used specimen containing 20 microg ethinyloestradiol and 3.0 mg drospirenone during 12 cycles. Blood levels of electrolytes (sodium, potassium, calcium, phosphorus and chloride) and renal function parameters (creatinine, urea and uric acid) were evaluated before and after 3, 6 and 12 cycles of the treatment
  
  
  RESULTS
  There were no statistically significant differences observed in serum concentration of electrolytes and renal function parameters.
  
  
  CONCLUSIONS
  The therapy of a low dose oral contraceptive containing 20 microg ethinyloestradiol and 3.0 mg drospirenone does not influence the electrolyte equilibrium and renal function.
authors.affiliation: Klinika Endokrynologii Ginekologicznej, Warszawski Uniwersytet Medyczny. kasiasauer@gmail.com
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Szlendak-Sauer
authors.forename: Stanisław
authors.initials: S
authors.lastname: Radowicki
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Skórzewska