[Changes in the protein and amino acid composition of the blood in patients with peptic ulcer complicated by stenosis].

Hypo- and disproteinemia, a decrease of total circulating proteins, an increased nitrogen excretion in the urine and aminoacid disbalance in blood serum were noted in patients with ulcerous disease complicated with stenosis. These changes were mostly pronounced in decompensated stenosis. Substitutive proteinotherapy in the preoperative period results in normalization of protein metabolism indices in blood only in patients with compensated stenosis.