[Evaluation of the renal excretory function using estimated GFR in patients coming to Voivoidship St. Lukas Hospital in Tarnow in the years 2007-2010].

Background: Studies concerning chronic kidney disease frequency are becoming of more and more interest. This is connected with an increased morbidity and diagnosis of chronic kidney disease. The aim of this study was an analysis of glomerular filtration rate results in patients coming to Emergency Department (ED) of Voivodship St. Lucas Hospital in Tarnów for various medical reasons.

Material And Methods: We analyzed patients admitted to ED between 30th March 2007 and 31st December 2010. In that period 121116 patients were seen in ER (52660 females and 68456 males). A creatinine level test was performed using the kinetic Jaffe method with alkaline picrate. Glomerular filtration rate (eGFR) was automatically calculated using the abbreviated MDRD formula. eGFR was evaluated in 26176 persons aged 18-104 years (average 59 years) which constituted 21.6% of all people coming to the hospital. Due to lack of some data and some mistakes the final analysis was performed on 23845 patients (12472 females (52.3%) and 11373 males (47.4%)). The whole study population was divided according to sex and age range; 18-34 years, 35-64 years and above 65 years. Stratification of kidney failure was done using the classification of stages of chronic kidney disease according to NKF KDOQI.

Results: Patients with chronic kidney disease stages 3 to 5 comprised 25.2% of the study population. Patients above 65 years constituted 45.9%. That group had also the greatest number of patients with eGFR below 60 ml/min (stages 3, 4 and 5 respectively 79.6%, 83.2% and 60.3%), mostly females. Patients who had a creatinine test performed and eGFR evaluated were more frequently hospitalized than patients without creatinine and eGFR checking.

Conclusions: Among patients admitted to ED 21.6% had eGFR evaluated which allowed classification of those patients to an appropriate stage of chronic kidney disease. 25.2% patients in that group had renal insufficiency. The majority of patients with renal insufficiency were above 65 years of age and mostly women. People who had eGFR evaluated were more frequently hospitalized. Evaluating eGFR in ED can help in diagnosing chronic kidney disease.