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.
Depending on the type of catheter you have and why it's being used, the catheter may be removed after a few minutes, hours or days, or it may be needed for the long term. Types of urinary catheter There are two main types of urinary catheter: 1  intermittent catheters â these are temporarily inserted into the bladder and removed once the bladder is empty. 2  indwelling catheters â these remain in place for many days or weeks, and are held in position by an inflated balloon in the bladder.