VEMERS 2.0: Upgrading of an Emergency Use Ventilator from a Single Mandatory Volume Control Mode of Ventilation (VEMERS 1.0) to 8 Modes of Ventilation

Table 1

Working limits on VEMERS 2.0.

Limit	Units	Value
Maximum cycle volume	ml	800
Minimum cycle volume	ml	125
Failsafe relief pressure	cm H20	60
Maximum pressure in pressure control mode	cm H20	40
Minimum pressure in pressure control mode	cm H20 10
Maximum peep	cm H20	25
Highest trigger pressure in assisted mode	cm H20	−3
Lowest trigger pressure in assisted mode	cm H20	−10
Maximum respiratory frequency	bpm	40
Minimum respiratory frequency	bpm	10
Maximum IE ratio		3
Minimum IE ratio		1
Maximum flow	lpm	60
Maximum time apnea in pressure support mode	sec	60
Minimum time apnea in pressure support mode	sec	5
Maximum flow O2 therapy	lpm	60
Minimum flow O2 therapy	lpm	10