BiPAP autoSV
Frequently Asked Questions
Question/Problem Solution
What is the BiPAP autoSV device used for? The intended use is: To provide non-invasive ventilatory support to treat adult patients with OSA and Respiratory Insufficiency caused by central and/or mixed apneas and periodic breathing.
What does autoSV mean? autoSV stands for automatic Servo Ventilation. This is a pressure support ventilation which will be automatically delivered as soon as the patient drops under a certain flow value.
How does the algorithm operate? The algorithm is based on flow. Using proven RI technologies such as Digital Auto-Trak, the flow signal is analyzed and a target flow is calculated. If the patient reaches the flow target, the device does not offer any additional pressure support. If the patient does not reach the flow target the device will dynamically change pressure support breath to breath.
Does the BiPAP autoSV operate like an Auto CPAP or Auto Bi-level device for treating obstructive events? No – The device does not have an auto-titrating algorithm to alleviate obstructive events. The innovative algorithm was designed to treat complex apnea and periodic breathing. The obstructive component of SDB is treated utilizing a clinician adjustable CPAP or BiPAP pressure level.
Which patient types can utilize the device? The device is designed to treat complicated breathing patterns. Complicated breathing patterns are mixed breathing patterns with OSA, Central, Mixed/Complex Sleep apneas and periodic breathing components, such as Cheyne-Stokes Respiration (CSR).
Is it necessary to titrate these patients? Yes. To treat the complexity of this patients as well as establish a baseline CPAP or BiPAP pressure for OSA, an in lab titration is necessary.
Which type of mask I can use with this device? The BiPAP autoSV can work with almost every mask type. However, controlling unintentional leak is very important for the algorithm to work effectively. If a patient presents with higher than expected leaks, move them to a full-face type of mask.
How long does it take before the patient’s periodic breathing is stabilized? After 2 – 4 cycles of periodic breathing the patient’s breathing pattern is typically stabilized.
Which modes are possible with the BiPAP autoSV? BiPAP autoSV is intended to be used as an auto-servo ventilator. However a variety of therapy treatments are available utilizing the 3 different pressure settings on the device. (EPAP, IPAPmin, IPAPmax). With these three pressure settings the device can be set to deliver CPAP, CPAP with autoSV, BIPAP and BiPAP with autoSV
Is it possible to use BiPAP autoSV patients with COPD, OHS and NMD? The BiPAP autoSV is designed to treat complicated breathing patterns in sleep patients. Nevertheless, utilizing the 3 different pressure settings and a standard backup rate of 4 -30bpm, the device can be set similar to that of a standard S/T device. The ASV algorithm is not able to assure a volume which would be most beneficial for these types of patients.
Is a Bi-level S/T device better for these patients (COPD, OHS and NMD)? A Bi-level ST device would be better for these types of patients. Experience with the VPAP adapt on these patients showed that over time the device can not treat them as well.
Will the patient require an in-lab sleep study with our BiPAP autoSV in order to be placed on the device at home? Yes. To treat the complexity of this patients as well as establish a baseline CPAP or BiPAP pressure for OSA, an in lab titration is necessary.
If so, will this differ from RMD? No.– In general an in-lab titration is appropriate. Remember, we handle complicated breathing patterns with changing conditions.
Can an identified candidate w/ Complicated Breathing Patterns, Central, and/or Mixed Apneas or Periodic Breathing (CSR), be put on the device w/o coming into the sleep lab? If the CPAP or BiPAP pressure is already determined in lab, the patient can be put directly on BiPAPautoSV. To assure that the patient is being properly treated it is a good idea to download the SmartCard data after 7-10 days.
What settings should be used in this case? For the set up of these patients it is advisable to use the CPAP or BiPAP pressure from the “old” unit,set the IPAPmax 10cmH2O above the CPAP or BiPAP pressure and set the back up Rate to Auto.
Will BiPAP autoSV utilize PC Direct with the “Plug n Play”? Yes, the BiPAP autoSV works plug and play with PC direct v1.5.
If so, will an upgrade be required and will this be available at launch? An upgrade to PC direct Version 1.5 is required. This Version can be found at My.Resironics.com.
Will BiPAP autoSV utilize Encore Pro and is an upgrade going to be necessary? Yes – The BiPAP autoSV does utilize Encore Pro v1.8, an upgrade available currently. A special reporting for the SV is available.
Will BiPAP autoSV be compatible with Alice 5? Yes – Similar to the Synchrony Lab unit, the BiPAP autoSV is compatible with Alice 5 as well as other diagnostic units.  When using the AutoSV it is recommended to display nasal/oral flow, tidal volume and PatPressure channels to identify when the device is providing support.. Pressure and flow can be displayed in the Alice 5 Sleepware.
If so, will an upgrade be required and will this be available at launch? A firmware upgrade of Alice 5 is required to display the correct pressure levels. The upgrade will be launched in April.

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