Oklahoma CNA State Practice Exam 2026 – Your All-in-One Guide to Certification Success!

Question: 1 / 400

An indwelling catheter is held in place by what mechanism?

A clip on the side

A film strip

A balloon on the tip

An indwelling catheter is secured in place by a balloon located at its tip. This balloon is filled with sterile water after the catheter has been inserted into the bladder, creating a seal that prevents the catheter from slipping out. This mechanism is critical for maintaining proper positioning inside the bladder, ensuring that urine can drain effectively into the collection bag without the need for external support or fastening.

The other options do not serve this purpose in the way that the balloon does. For example, clips or straps might be used for securing external parts of catheters, but they don’t actually hold the catheter in the bladder. The balloon mechanism is specifically designed to retain the catheter within the bladder itself, making it a key feature of indwelling catheters.

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A strap around the leg

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