VPAPIII ST-A, AI and AHI

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
Mary Z
Posts: 1493
Joined: Wed Oct 28, 2009 9:55 am

VPAPIII ST-A, AI and AHI

Post by Mary Z » Wed Nov 03, 2010 8:45 am

I had posted awhile back about whether this mschine did record AI and AHI. Several ResMed reps reported it did, but I finally got an email with an attachment of specs for this machine. As it is essentially a servo vent it does not record AI and AHI.

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Mask: Wisp Nasal CPAP Mask with Headgear - Fit Pack
Additional Comments: PR System One Remstar BiPap Auto AS Advanced.
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ozij
Posts: 10537
Joined: Fri Mar 18, 2005 11:52 pm

Re: VPAPIII ST-A, AI and AHI

Post by ozij » Wed Nov 03, 2010 8:54 am

Thank you for the information, Mary.
Resmed did the same with their first ASV version too: no AHI data.

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Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear
Additional Comments: Machine: Resmed AirSense10 for Her with Climateline heated hose ; alternating masks.
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jnk
Posts: 5781
Joined: Mon Jun 30, 2008 3:03 pm

Re: VPAPIII ST-A, AI and AHI

Post by jnk » Wed Nov 03, 2010 9:20 am

From the VPAP™ III ST-A with QuickNav Clinical Guide:
A comprehensive set of data is available in the Clinical Summary menu, including Efficacy Data, Usage Data, Alarm History, Settings Summary and Servicing information.
Note: The Summary screens are also available in the patient menu. . . . Statistics quoted on the Efficacy Data screen include:

• Leak (95th centile value for mask-on time only)
• Vt—tidal volume (5th and 95th centile values for mask-on time only)
• Resp Rate—respiratory rate (5th and 95th centile values for mask-on time only)
• MV—minute ventilation (5th and 95th centile values for mask-on time only)
• % Spont. T—percentage spontaneous (flow) triggered breath
• % Spont. C—percentage spontaneous (flow) cycled breath.

. . . The Usage Data screen reports total hours the device has been used since the data was last erased, the Usage in hours per day and the number of days the device was used compared to the total days since the hourmeter was last reset. For Efficacy and Usage Data, statistics are provided for five time intervals (last day, last week, last month, last six months, last year) so you can assess the significance of recent events. All statistics calculated for a range of dates are median values. The median is a more robust measure than an average for a data set that has some extreme values.
So, exactly as stated, no AHI.
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