Urinary retention is the inability to empty the bladder. Dysuria means difficult urination. The absence of urinary output is called anuria. The inability to form urine is term â¦ ed anuria.
Some experts recommend changing your air filter as often as every 3,000 miles (4,828 kilometers), along with changing the oil [source: 2CarPros.com ].Others say that's a little too excessive and that you should simply use your judgment in visually spot-checking the air filter and change it out when it looks dirty.ome experts recommend changing your air filter as often as every 3,000 miles (4,828 kilometers), along with changing the oil [source: 2CarPros.com ].
Typically you should change a basic, fiberglass or paper furnace filter every one to two months. And you should change or clean an electrostatic or HEPA filter every two to four months ifâ¦. â you have one or more furry pets. â you notice excessive to moderate dust buildup in your house. â one or more people in your home smoke.