of the quick-flush is to provide a rapid source of anesthetic-free
oxygen to the patient when required. Most quick-flush valves
are of the spring-loaded, push-button type, but some lever-action
valves may be encountered.
- If the valve
seat develops a leak, it will dilute the anesthetic in the breathing
circuit and hinder maintenance of anesthesia.
- The quick-flush
should not be operated when a Bain circuit is in use, since the
blast of high-pressure gas is directed down the endotracheal tube
and may cause pulmonary barotraouma.
- Oxygen released
by the quick-flush valve should not pass through the vaporizer.
- Some older
anesthesia machines may be fitted with a nitrous oxide quick-flush.
This is potentially dangerous and should be disabled.