AVEA ventilator systems Chapter 6: Infant Non-invasive Ventilation 155
L2786 Rev. M
Nasal Intermittent Mandatory Ventilation (nIMV)
Nasal CPAP is a spontaneous mode of ventilation. In this mode, no mechanical positive pressure breaths are delivered.
Nasal IMV is a time-triggered, time-cycled mode of pressure control ventilation provided via nasal prongs. This is an
enhancement to the nasal CPAP mode. When a rate is set greater than zero, time-triggered, time-cycled mandatory
breaths are delivered. Each breath comprises an inspiratory phase, during which the delivered pressure is increased
from baseline (PEEP) to PEEP + Inspiratory Pressure, and an expiratory phase, during which the delivered pressure is
returned to PEEP.
Nasal IMV breaths are:
• Controlled by pressure
• Limited by pressure
• Cycled by time
Note:
Nasal CPAP/IMV is only available in the neonatal patient size setting.
Circuit compatibility
This mode utilizes standard two-limbed infant/neonatal patient circuits and nasal prongs for the patient interface.
The following nasal CPAP prongs have been approved for use:
• HUDSON Infant Nasal CPAP Cannula: Sizes 0 through 4
Hudson RCI, Research Triangle NC
• INCA
®
Infant Nasal Cannula: Sizes 7.5F, 9F, 10.5F, 12F, 15F
CooperSurgical, Inc., Trumbull CONN
• NEOTECH Binasal Airway: Sizes 3.0 mm, 3.5 mm, 4.0 mm
NEOTECH Products, Inc., Valencia CA
• ARGYLE
®
Infant Nasal Cannula: Sizes Extra-small, Small, Large
Sherwood Medical; St. Louis MO
General specifications
nCPAP Level
Range: 2 to 10 cmH
2
O
Resolution: 1 cmH
2
O
Default: 5 cmH
2
O
Accuracy: ±2 cmH
2
O
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