For a CSU, a new urine sample must be collected through the catheter bag's sampling port or, in the case of a catheter valve, directly from the valve.
An indwelling urinary catheter is implanted, however it remains in place unlike an intermittent catheter. The catheter is secured in the bladder with the help of a water-filled balloon. Foley catheters are a common name for these catheters.
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