Transcript Life Products LP-6 Home Ventilator
Life Products LP-6, LP 6 Plus and LP 10 Home Ventilator
By Bryce Younger
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Classification
Electrically powered
Microprocessor controlled
Single circuit
Rotary drive piston
Modes LP 6
OFF, Battery Charge, A/C, SIMV, and Pressure Limited modes
Sine flow wave in all modes.
PEEP possible by adding PEEP valve to exhalation valve. 2
LP 10 3
Modes on LP 6 Plus and LP 10
Standby A/C: pressure limited or not (LP 10) SIMV: machine breaths press limited or not (LP 10) Pressure Cycle
Set V T I.T. controls flowrate Hi pressure alarm setting ends inspiration but without audible alarm. Airway pressure is independent of HP alarm setting during inspiration.
Pressure Limit Control (LP 10 only) does not end inspiration.
Classification
In SIMV, patient must breathe through the circuit, humidifier and then through the piston intake valve unless one way valve teed in near patient wye.
Internal resistance is 1.0 cm H20/L/sec.
Oxygen is added between the ventilator and the humidifier or via reservoir bag added to piston intake valve for 40% or more oxygen concentrations.
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Controls
Vt = 100 - 2200 ml Rate = 1 - 38 BPM Inspiratory Time = .5 - 5.5 sec Sensitivity -10 to +10 cm H20 High Pressure Alarm Limit 25 to 100 cm H20 Internal pressure relief at 100 cm H20.
LP 10 has Pressure Limit Control 6
Modes
A/C Mode
Set
Tidal volume
Inspiratory time
If the inspiratory time is set too long, a system error alarm will be activated. Otherwise, inspiratory time essentially determines the flow rate of the set tidal volume.
Rate
LP 10 breaths can be Pressure Limited not end inspiration.
– This pressure limit does LP 6 LP 10 7
Modes cont.
Pressure Limited Mode (LP 6)
The High Pressure Alarm/Limit control limits pressure without an alarm and does not end inspiration. The set tidal volume may not be delivered if inadequate inspiratory time is set. If inspiratory time too long will get System Error Alarm.
Airway pressure developed during inspiration is independent of alarm/limit setting.
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Modes cont.
SIMV Mode
Mandatory breaths given according to the Rate control and patient allowed to breathe through ventilator or one-way valve, if added, for spontaneous breaths. If the SIMV rate is set < 6 BPM and the patient fails to initiate an assisted SIMV breath within 20 seconds, the apnea alarm activates and the ventilator switches to Backup ventilation at a rate of 10 BPM.
LP 10 machine breaths can be Pressure Limited. 9
Alarms
Low Pressure/Apnea –
Low pressure is the primary disconnect alarm except when rate set < 6 BPM. Apnea alarm activates if no patient effort sensed within 20 seconds and the rate is < 6 BPM. Automatically switches to 10 BPM at the same tidal volume and inspiratory time. Alarm must be manually reset.
Functional in all modes.
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Alarms
Low Power –
alarms when battery power drops to 10 volts. There is no alarm when power source switches from internal battery to AC. There is an alarm when power switches from AC to internal and must be reset.
High Pressure
– Ends inspiration in A/C and SIMV modes. Sets the pressure limit which does not end inspiration in Pressure Limited Mode for LP 6.
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Alarms
Setting error –
activates if inspiratory time setting incompatible with set tidal volume and respiratory rate. Ends inspiration.
Power switch over –
indicates whether AC, internal, or external battery in use.
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Indicators
Battery Test - shows charge level underneath airway pressure.
Breathing effort - indicates assisted breaths.
Power - indicates whether AC power or battery charge, external battery, or internal battery in use. Battery requires 2 hours of charge for every 1 hour of use.
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O
2
Bleed in
Can bleed in oxygen between ventilator and humidifier up to 40%. 40% and over must add reservoir bag and oxygen to the back at the piston intake filter.
V T set = V T desired (1 - FIO 2 ) .79
LPM = (V T desired - V T set) BPM 1000 14
Circuit
Circuit
Requires exhalation valve and proximal airway pressure line. Clean circuit with soapy water, rinse, and then soak in 1/3 cup vinegar per cup of water for 30 minutes every 24 hr.
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