ICU Ventilators

Question 0

Maquet SERVOi

Answer 0

STANDARD MODES
   Assist/Control CMV-Vol (VC)
   PCV (PC)
   SIMV-VC (Vol. Cont), SIMV-PC (Press. Cont.)
   PRVC (PRVC), SIMV PRVC (SIMV-PRVC)
   PSV-CPAP, APRV (BiVent)

ADDITIONAL MODES
NAVA, VS

Features/Settings
MRI capable
Ultrasonic transducer
Active exhalation valve (if patient breaths 3cmH20 above the set pressure it will regulate it back down to set pressure, if the patient exceeds the upper pressure limit it will cycle to expiration)

AutoMode- shifts automatically within a breath among controlled ventilation, supported ventilation, and spontaneous ventilation based on the effort sensed from the patient.
VC or PRVC change to VSV
PC changes to PSV

Bias flow- 2 L/min (adult), 0.5 L/min (infant)
Green= flow triggered, Red= pressure triggered
3 hour max battery life
P0.1 (occlusion pressure)- indicator of respiratory drive

Question 1

Covidien PB 840

Answer 1

STANDARD MODES
   Assist/Control CMV-Vol (A/C volume)
   PCV (A/C pressure)
   SIMV-VC (volume), SIMV-PC (pressure)
   PRVC (VC+), SIMV PRVC (SIMV VC+)
   PSV-CPAP (SPONT), APRV (BiLevel), NIV, Apnea Vent.

ADDITIONAL MODES
PAV+ /VS (Proportional Assist Ventilation)
-targets a pressure based on the selected percentage of support set by the RT and the flow and volume readings from the patient. Works to rhythmically unload the respiratory muscles
Neomode

Volume Support- pressure support ventilation with a volume target, like PRVC the ventilator adjust pressure to meet set Vt.

Question 2

Drager EvitaXL

Internal Drive: Electromagnetic servo valves

Power sources: Pneumatic, electrical, internal battery

Answer 2

STANDARD MODES
Assist/Control CMV-Vol (CMV)
PCV (PCV+)
SIMV-VC (vol. and PSV), SIMV-PC (Press. +PSV)
PRVC (AutoFlow), SIMV PRVC (AutoFlow with SIMV, volume)
PSV-CPAP, APRV

ADDITIONAL MODES
MMV & MMV + PS
NIV

Features/Settings
Thermistor measures expiratory flow
Automatic Leakage Compensation
Sigh (intermittent increase in PEEP for 2 breaths in CMV mode)
ATC-Automatic Tubing Compensation (artificial airway compensation)
AutoFlow- dual control mode, can be active in volume-targeted modes (CMV, SIMV, MMV) provides pressure limited breaths that are volume-targeted

Question 3

CareFusion AVEA

Internal Mechanism: A rigid accumulator

Power sources: Pneumatic, electrical, internal battery

Answer 3

STANDARD MODES
   Assist/Control CMV-Vol (Volume A/C)
   PCV (Pressure A/C)
   SIMV-VC (Volume SIMV), SIMV-PC (Pressure SIMV)
   PRVC (Vsync-on), SIMV PRVC
   PSV-CPAP, APRV (BiPhasic), Apnea, NIV

ADDITIONAL MODES
TCPL-A/C and TCPL-SIMV, volume guarantee (neonatal only)
Neonatal has no PRVC, APRV, NIV

FEATURES/Settings
   Artificial airway compliance (AAC)
   Variable orifice (flow) pneumotachometer 
   VSYNC- changes vol. control breaths to pressure-limited vol. targeted
   PSV Tmax (established max length of I-time during PSV)
   Heliox delivery 
   Volume limit- limits Vt delivery 
   Machine volume- establishes minimum volume delivery when     mandatory breaths are pressure targeted (pressure AC or SIMV)