[Clinical value of determining Na-Li countertransport in the diagnosis of arterial hypertension associated with minor urinary syndrome].

Na-Li-countertransport was determined in 117 patients aged 16-17. The main groups included 22 patients with essential hypertension accompanied by minor urinary syndrome; 12 patients with hypertensive form of chronic diffuse glomerulonephritis; and 21 patients with chronic pyelonephritis either with or without urinary syndrome who exhibited no severe alterations in function, shape and structure of kidneys according to instrumental findings. 23 patients with chronic diffuse glomerulonephritis and 24 patients with chronic pyelonephritis reliably diagnosed by instrumental methods as well as patients with essential hypertension without urinary syndrome were included into groups of comparison. Patients with essential hypertension from both groups had individual Na-Li-countertransport values over 300 mumol/l RBC/hr; nevertheless, mean values of countertransport as well as systolic and diastolic BP levels were higher in the main group. Individual Na-Li-countertransport rates in patients with parenchymatous renal diseases did not exceed in overwhelming majority of cases 300 mumol/l RBC/hr. Main groups and groups of comparison did not differ in mean values of countertransport.