Studies of the Serum Electolytes in Urology II.Changes in the Levels of Serum Sodium, Potassium, Calcium and UreaNitrogen in the Various Urological Diseases

The following results were obteined by measuring the levels of serum, potassium and calcium with the flame photometer and that of serum urea-nitrogen with the xanthydrol method in 147-150 in-patients who were subjected to urological surgery. 1) In 28 Patients with urogenital tuberculosis, the serum sod i um was decreased, while the potassium level in most cases was within normal limit. The serum calcium level in the majority of the cases was also within normal limit. The urea-nitrogen was increased in 17.8 per cent of the cases, which resulted in slight to moderate degree of azotemia. 2) In the patients with urolithiasis, the serum sodium level was mostly wi t hin normal limit, the serum potassium level was lowered in one third of the cases, and the serum calcium increased in the majority of the cases. The urea-nitrogen was increased in 14 per cent of the cases, which resulted in slight to moderate degree of azotemia. 3) In the patients with urogenital tumors, the serum sodium was d e creased, the serum potassium was either increased or decreased in half of the cases with slightly lower mean, and the serum calcium was slightly increased. Urea-nitrogen was increased in 14 per cent of the cases, which resulted in slight to moderate degree of azotemia. 4) In the patients with urogenital malformation, the serum s o dium level was within normal limits, the mean serum potassium level was lowered, and the mean serum calcium level was elevated. Urea-nitrogen was increased in 25 per cent of cases, which resulted in slight to high degree of azotemia. 5) In the patients with urogenital inflammatory and other diseases, the mean serum sodium level was lowered, the mean serum potassium level was markedly elevated, and the mean serum calcium level was also elevated. Urea-nitrogen was increased in 70 per cent of the cases, which resulted in slight to high degree of azotemia