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.
Urethral catheterisation, an invasive procedure with risks of infection, used to be regarded as the gold standard for measuring residual urine volume. It has now been superseded by an ultrasound scan of the bladder estimating the post-void residual urine (Martin et al, 2006).