Ultrafiltration can be thought of as a ‘mechanical diuretic’. It is a treatment that is recommended for patients who have considerable fluid retention despite maximum doses of standard diuretics. It is a portable machine incorporating a special filter which is connected to a tube (cannula) in the arm or neck.
Ureteric stents are inserted for many reasons but the commonest are blockage of the ureter (the tube draining urine from the kidney to the bladder) or as a prelude to lithotripsy (shockwave treatment) for a kidney stone.
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