• Volume Limited (or Cycled)
  • Controlled Mechanical Ventilation (CMV)
    • V_E, RR, and V_t determined by ventilator
    • Patient does not contribute
  • Assist Control (AC)
    • V_E, RR, and V_t determined by ventilator
    • Patient can increase V_E by triggering additional breaths
    • V_t is constant so be aware of respiratory alkalosis
  • Intermittent Mandatory Ventilation (IMV)
    • Same as AC, but patients increase V_E by spontaneous breathing
  • Synchronous Intermittent Mandatory Ventilation (SIMV)
    • Variation of IMV
    • Ventilator breaths are synchronized with patient
    • Tidal Volume may vary
• Pressure Limited (Pressure Control)
  • Physician sets I:E ratio, RR, PEEP and FiO₂
  • Pressure-limited AC or Pressure-regulated volume control (PRVC)
  • Pressure-limited IMV or SIMV
  • Pressure-limited may have improved synchrony with patient and earlier liberation from mechanical ventilation
  • CANNOT guarantee constant V_t and V_E
  • Used for obese patients (like obese patient with compartment syndrome)
• Flow Limited Ventilation (Pressure Support Ventilation [PSV])
  • Not truly a “limited” mode
  • Preset airway pressure is delivered after ventilator is triggered
  • Inspiration ends when inspiratory flow decreases to certain value
  • Patient triggers each breath, RR and V_E ARE NOT SET
  • Patient should have spontaneous breathing
  • Often used as a weaning mode
  • Associated with poorer sleep than AC
  • Need high pressure (> 20 cm H₂O) to prevent alveolar collapse
• Continuous Positive Airway Pressure (CPAP)
  • Delivers continuous level of positive airway pressure
  • Similar to PEEP
  • Patient must initiate all breaths
• Bi-Level Positive Airway Pressure (Bi-PAP)
  • Non-invasive
  • Can deliver different inspiratory and expiratory pressure
• Airway Pressure Release
  • High continuous positive airway pressure for a long duration, then lower pressure for a shorter duration
  • Spontaneous breathing possible
  • May be indicated for elevated intracranial pressure

No, I hadn’t forgotten to do the M and E for respiratory   I am going to start posting the new ones on the monday/tuesday of each week. 

Here is for week 13….

RESP 3 MnE

RESP 3 MnE ans