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AHI Readings PRS1 vs SH
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graeme Offline

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Machine: Philips Respironics Remstar Pro C-Flex+
Mask Type: Nasal mask
Mask Make & Model: Fisher & Paykel ESON
Humidifier: Respironics System One Heated Humidifier with Heated Tube
CPAP Pressure: 14 cm
CPAP Software: SleepyHead EncoreBasic

Other Comments: Intermittently use CMS50D+ Oximeter

Sex: Male
Location: Liverpool, NSW Australia

Post: #1
AHI Readings PRS1 vs SH
Can anybody throw some light on my concerns.
I am using the latest version of Sleepyhead to try to make sense of my readings. The AHI readings as displayed on my CPAP machine bear no resemblance to those shown in the daily readings shown in Sleepyhead.
Machine: Philips Respironics System One Remstar Pro with C-Flex+
Software: SleepyHead v0.9.3
07-16-2013 10:49 PM
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PaulaO2 Offline
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Machine: S9 Autoset
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CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #2
RE: AHI Readings PRS1 vs SH
Graeme, I changed the subject line to hopefully get you the help you need.

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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
07-17-2013 12:39 AM
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zonk Offline

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Machine: A10 AutoSet
Mask Type: Nasal mask
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Sex: Male
Location: Australia

Post: #3
RE: AHI Readings PRS1 vs SH
From the manual
AHI - The device accumulates individual Apnea/Hypopnea indices (AHI) for each session the patient used the device. This screen displays the average of these individual nightly AHI values over a 7 day and 30 day time frame (provided the device has at least 7 or 30 days of data respectively). If the device has only 5 days of data to use for the calculation, the 5 day average value will be seen under the 7 day display.
07-17-2013 02:29 AM
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graeme Offline

Preferred Members

Posts: 31
Joined: May 2013

Machine: Philips Respironics Remstar Pro C-Flex+
Mask Type: Nasal mask
Mask Make & Model: Fisher & Paykel ESON
Humidifier: Respironics System One Heated Humidifier with Heated Tube
CPAP Pressure: 14 cm
CPAP Software: SleepyHead EncoreBasic

Other Comments: Intermittently use CMS50D+ Oximeter

Sex: Male
Location: Liverpool, NSW Australia

Post: #4
RE: AHI Readings PRS1 vs SH
(07-17-2013 02:29 AM)zonk Wrote:  From the manual
AHI - The device accumulates individual Apnea/Hypopnea indices (AHI) for each session the patient used the device. This screen displays the average of these individual nightly AHI values over a 7 day and 30 day time frame (provided the device has at least 7 or 30 days of data respectively). If the device has only 5 days of data to use for the calculation, the 5 day average value will be seen under the 7 day display.
Thanks for your input.
My manual states that "the device accumulates individual Apnea/Hypopnea indices for each session etc..The screen displays the nightly AHI value for the most recent 1 day time frame. It displays the average etc 7 days and 30 days etc".
I suspect that the 1 day time frame could be significant ie from 00:00 am. to 23:59pm.
07-17-2013 10:47 PM
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PaulaO2 Offline
Wiki Editor
Moderators

Posts: 8,068
Joined: Feb 2012

Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #5
RE: AHI Readings PRS1 vs SH
Actually it is noon to noon. The screen resets itself at noon (according to the machine's internal clock).

PaulaO2
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www.ApneaBoard.com


Breathe deeply and count to zen.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
07-17-2013 10:59 PM
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zonk Offline

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Posts: 7,908
Joined: Feb 2012

Machine: A10 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
Humidifier: Integrated /ClimateLineAir
CPAP Pressure: 9/13
CPAP Software: ResScan

Other Comments: CPAP since Nov 2010

Sex: Male
Location: Australia

Post: #6
RE: AHI Readings PRS1 vs SH
(07-17-2013 10:47 PM)graeme Wrote:  I suspect that the 1 day time frame could be significant ie from 00:00 am. to 23:59pm.
I don,t use PRS1, CPAP new day start at midday (12 noon) until midday the following day. If sleeping cross over the midday cutoff, the portion before midday count with the previous day and the portion after midday with the new day
07-17-2013 11:12 PM
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