At the age of 21 weeks of pregnancy, Mark, who had not yet been born, was diagnosed with dysplasia of both kidneys - a form of malformation of their development. The baby was born in the Republican Scientific and Practical Center «Mother and Child». Mark's health condition was so severe that he was sent to the intensive care unit. After conducting a series of examinations, the child was diagnosed with cystic dysplasia of both hypoplasmic kidneys. Mark is currently 11 months old. The diagnosis is the same. Hyperkalemia (one of the disorders of the water-electrolyte balance) against the background of adequate diuresis and nutrition correction persists for a long time. In order to correct hyperkalemia for vital signs, Mark needs to be prescribed Kalimeit.