Valved shunt as a treatment for obstructive uropathy: does pressure make a difference?

Abstract

Low-pressure shunts preserved both bladder volume and renal development. High-pressure shunts did neither.

Therapeutic intervention for fetal lower urinary tract obstruction: Current evidence and future strategies

“…There has not been an innovation in shunt design in several years. There is concern that the shunt itself may cause bladder wall thickening and fibrosis [34]. Kitagawa et al explored the option of a "valved" shunt, hypothesizing it would preserve the filling/emptying cycle of a normal bladder [35].…”