If a factor in raising the productivity of labor is not used in the production process, it is referred to as a reserve for increasing labor productivity. Reserves are classified according to their association with a particular production process, an economic sector, or the national economy.
Definition. 1  Urinary catheterization is the insertion of a catheter into a patient's bladder. The catheter is used as a conduit to drain urine from the bladder into an attached bag or container.
Types of urinary catheter. There are two main types of urinary catheter: intermittent catheters â these are temporarily inserted into the bladder and removed once the bladder is empty. indwelling catheters â these remain in place for many days or weeks, and are held in position by an inflated balloon in the bladder.