Which type of catheter is inserted and remains inside the bladder for a period of time?

An indwelling catheter, often referred to as a Foley catheter, is specifically designed to be inserted into the bladder and remain in place for an extended period. This type of catheter is equipped with a balloon that is inflated after insertion to help keep it securely positioned within the bladder, allowing for continuous drainage of urine without the need for frequent replacements.

This is particularly useful in medical situations where a patient may be unable to void urine naturally due to conditions such as surgery, urinary retention, or incontinence. The materials and design of indwelling catheters are intended for long-term use, which distinguishes them from other types of catheters that are designed for shorter procedures or temporary usage, such as straight or intermittent catheters.

Condom catheters are external devices used primarily for males and do not enter the bladder, and therefore they do not remain inside the bladder. Intermittent catheters are inserted for immediate drainage and then removed, rather than being left in place. Thus, the characteristic of remaining within the bladder for an extended duration is what distinctly qualifies indwelling catheters as the correct answer.