Flashcards in Types of Ventilators Deck (12)
Assist-Control Ventilation (ACV)
Ventilator delivers a preset Vt at preset frequency
Gives patient some control in breathing while assisting them
Synchronized Intermittent Mandatory Ventilation (SIMV)
Delivers preset Vt at preset frequency with synchronization of patient's spontaneous breathing.
Patient can breathe spontaneously
Used for weaning and continuous ventilation.
Pressured Support Ventilation (PSV)
Delivers positive pressure once patient starts to breathe (inspiration).
Used for continuous ventilation and weaning
Pressure Controlled Ventilation (PCV)
gives pressure-limited breath delivered at set rate.
It allows for spontaneous breathing
Pressure Control Inverse Ratio Ventilation (PC-IRV)
Combines PCV with Inspiration/Expiration (I/E) Ratio
Most starts with a 1/1 ratio and changes with each client. It allows for increase in inspiratory time to expand collapse alveoli.
Used for ARDS and continuous hypoxemia
Airway Pressure Release Ventilation (APRV)
Patient can breathe any time during respiratory cycle but need the help of a CPAP to maintain appropriate amount of high pressure for a short time.
CPAP and time needs to be patient-specific
Positive End Expiratory Pressure (PEEP)
Positive pressure is applied during the expiration phase.
It increases lung volume, functional residual capacity (FRC) and oxygenation of the lungs.
FIO2 can be reduced
Pressure falls between 3-20 cm H2O.
Automatic Tube Compensation (ATC)
Support system designed to overcome WOB through artificial airway.
Increases inspiration and decreases expiration
High-frequency oscillatory ventilation (HFOV)
Gives small Vt at rapid RR.
Recruit and maintain lung volume and reduce intrapulmonary shunting.
Patients needs to be sedated and paralyzed.
Extracorporeal Membrane Oxygenation (ECMO)
Alternative form of pulmonary support for patient with severe respiratory failure.
Removes blood from patient, infuse O2, remove waste and put the blood back to patient
Requires systemic anticoagulation and time-limited intervention
Needs a specialists
What is the mechanism for negative pressure ventilation?
The ventilator pulls the chest wall outwards and reduces intrathoracic pressure. It allows for passive expiration.