Philips V200 manual Safety Valve Open SVO, VCV PCV Nppv

Chapter 7

Operating Theory

Parameters Used in Apnea Ventilation, Settings, and Alarm Limits

	VCV	PCV	NPPV
Settings	Tidal Volume	Inhalation Pressure	IPAP
	Peak Flow	Inhalation Time	EPAP
	PEEP	PEEP	Inhalation Time
	I-Trigger (pressure/flow)	I-Trigger (pressure/flow)	Rise Time
	Flow pattern	Rise Time	I-Trigger (flow)
	O2 %	O2 %	E-Cycle
	Insp Hold	Apnea Rate	O2%
	Apnea Rate		Apnea Rate
Alarm	High Pressure	High Pressure	Low Pressure
Limits	Low Insp Pressure	Low Insp Pressure	Low EPAP
	Low PEEP	Low PEEP	Low Tidal Volume
	Low Mandatory Tidal Volume	Low Mandatory Tidal Volume	High Rate
	High Rate	High Rate	Low Exhaled Minute Volume
	High Exhaled Minute Volume	High Exhaled Minute Volume	High Leak
	Low Exhaled Minute Volume	Low Exhaled Minute Volume

Table 7-2: Parameters Used in Apnea Ventilation, Settings, and Alarm Limits

The ventilator will reset out of Apnea Ventilation if the operator presses the

Alarm Reset button, or if the patient triggers two successive breaths.

Safety Valve Open (SVO)

Safety valve open is an emergency mode of ventilation that allows the patient to breathe through the system whenever any of the following occur:

1.An occlusion is detected.

(The ventilator resumes normal breathe delivery if the occlusion is removed.)

2.Loss of both the air supply and the oxygen supply occurs.

(The ventilator resumes normal breath delivery if the gas supply is made available.)

3.The Ventilator Inoperative state (Vent InOp) is entered due to a hardware malfunction that prevents breath delivery.

(The ventilator will not resume normal breath delivery in this case. Call for service.)

During SVO:

1.The safety valve is opened,

2.The exhalation valve is opened,

3.The air and oxygen valves remain closed,

4.A high priority alarm is activated,

5.The Safety Valve Open indicator is illuminated,

6.The Normal indicator is turned off.

7-8 Respironics V200 Ventilator Operator’s Manual REF 1057983 A