i am a nurse

i am a nurse

Sunday, November 21, 2010

Mechanical Ventilation

Indication

-Airway obstruction
-Inadequate oxygenation-O2 saturation (<90% on hi-flow oxygen via nonrebreather mask)
-Inadequate ventilation-hypoventilation (high pCO2, pH-acidosis)
-Increased work of breathing, ineffective breathing pattern
-Airway protection


Common Setting
*AC (Assist Control)
-Pt. triggers ventilator to deliver a breath. If apnea occurs, a minimum rate & volume will be delivered to the pt.


*CPAP (Continuous Positive Airway Pressure)
-Continuous, nonstop positive positive pressure is applied throughout entire respiratory cycle.


*BiPAP (Bilevel Positive Airway Pressure)
-Same as CPAP but with 2 preset setting ; one for inspiration & one for expiration


*CMV (Continuous Mandatory Ventilation)
-Ventilator delivers a set tidal volume at a set rate regardless of a pt.'s own attemps to breathe. Expect pt. to
  require sedation.


*IMV (Intermittent Mandatory Ventilation)
-Ventilator delivers a set tidal volume at a set rate, yet also allows the pt. to initiate breaths.


*PSV (Positive Support Ventilation)
-For pt. with spontaneous breathing. Ventilator delivers a preset positive pressure for the duration of
  inspiration when the pt. initiates a breath.


*SIMV (Syncrhonized Intermittent Mandatory Ventilation)
-Ventilator is triggered only by a patient-activated demand valve & therefore, synchronizes with the pt. own
  respiratory efforts.


*PEEP (Positive End-Expiratory Pressure)
-Maintains a preset positive airway pressure at the end of each expiration. PEEP is used to treat a PaO2 <60 mmHg on FiO2 >50%

No comments:

Post a Comment