Catheter Valves
A catheter valve can be connected directly to a catheter and removes the need for a drainage bag for many patients, although some may still prefer to use a 2 litre drainage bag attached to the valve for night-time drainage. Using a catheter valve is much more discreet and it can be tucked inside underwear to promote dignity for the patient.
A valve also allows the bladder to fill and empty thereby helping to maintaining bladder tone, but it must be released periodically to prevent over-distension of the bladder (Bardsley and Kyle, 2007). Valves have been shown to reduce the incidence of bladder wall and urethral trauma as the bladder wall is lifted off the catheter tip and there is no weight dragging on the catheter, which would occur with a drainage bag (Bardsley and Kyle, 2007).
Catheter valves are not suitable for all patients.
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While valves are preferred by many patients, there are differences between the performance of different products (Fader et al, 1997) and the practice of using valves is based primarily on expert opinion rather than research.