Renal calculi is:

The disease caused by the deficiency of $ADH$ is:

Blood is drained from a convenient $P$ of a patient and is pumped into a dialyzing unit after adding $Q$. After purification,$R$ is added to the blood,and it is returned to the body through $S$.
$\quad \quad P\quad \quad Q\quad \quad R\quad \quad S$

Uremia is a disease related to the

Uremia is indicated when the blood urea level rises above . . . . . . .

Which of the following is correct with reference to haemodialysis?