Term
| What is positive pressure vents? |
|
Definition
Use a mechanical drive mechanism to force air into the patients lungs through EET or tracheal tubes.
(pressure cycled, time cycled, volume cycled, high frequency ventilation) |
|
|
Term
What is negative pressure vents? |
|
Definition
Applied externally to the patient and decrease the atmospheric pressure surrounding the thorax to initiate inspiration.
(iron lung, body wrap)
|
|
|
Term
What does control mean in regard to a ventilator?
|
|
Definition
| -inflates patient’s lungs at predetermined intervals regardless of patients inspiratory effort. Delivers a preset tidal volume and rate. (vent is doing all the work even if person is awake and breathing on own) |
|
|
Term
| What does assist-control mean in regard to a ventilator? |
|
Definition
| -delivers a preset tidal volume or pressure in response to patient’s inspiratory effort. Will initiate a breath if patient fails to do so within a preset time. Ex: CMV (a coma patient on control wakes up and begins to breathe on own, the vent will change to assist and start to just assist the patient in breathing. |
|
|
