The Prevalence of Proteinuria and Hematuria at a Tertiary Referral Hospital / 대한신장학회잡지

ABSTRACT

Urinalysis is one of the basic laboratory tests in patient care and routine examinations. But few studies have been carried out about the prevalence of proteinuria and hematuria in Korea, especially in tertiary referral hospital, and the meanings of them are not clear until now. So we performed a cross- sectional study to find out the prevalence of proteinuria and hematuria at a tertiary referral hospital, Seoul National University Hospital. From Jan. 1. 1995 to Dec. 31. 1995, there were 35,361 adults (17,123 males and 18,238 females) in whom urinalyses were carried out. The age of them ranged from 15 to 96 years and the average was 49 years with the distribution of 2.3% in 15-19 years, 10.6% in 20-29 years, 16.0% in 30-39 years, 19.6% in 40-49 years, 24.3% in 50-59 years, 19.2% in 60-69 years, and 8.0% in 70 years or older. The degree of proteinuria was classified to '-', '+/-', '+', '++', '+++' by dipstick method. In males, 80.0% were '-', 6.3% '+/-, 6.8% '+', 3.7% '++', 3.2% '+++', and 5.0% '+/-', 5.1% '+', 2.8% '++', 2.1% '+++' in females. Proteinuria of degree '+/-' or higher was defined as significant and found in 19.9% of males and 14.9% of females. According to the age groups, 17.0% in 15 to 19 years, 17.3% in 20 to 29 years, 16.3% in 30 to 39 years, 15.2% in 40 to 49 years, 16.8% in 50 to 59 years, 18.6% in 60 to 69 years, 23.6% in 70 years or older had significant proteinuria. Hematuria was classified by the number of erythrocytes per 400X high-power field, to grade 1 (30), 6 (many). In males, 62.9% were grade 1, 23.5% grade 2, 5.3% grade 3, 3.9% grade 4, 1.9% grade 5, 2.6% grade 6, and 47.4% grade 1, 32.6% grade 2, 8.8% grade 3, 5.3% grade 4, 2.4% grade 5, 3.4% grade 6 in females. Hematuria of grade 3 or higher was defined as significant and found in 13.6% of males and 20.0% of females. According to the age groups, 11.1% in 15 to 19 years, 13.7% in 20 to 29 years, 16.8% in 30 to 39 years, 17.4% in 40 to 49 years, 16.7% in 50 to 59 years, 18.0% in 60 to 69 years, 19.9% in 70 years or older had significant hematuria.