Hypopnea vs obstructive

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
BigTex
Posts: 58
Joined: Tue Feb 21, 2012 12:17 am
Location: Houston, TX

Hypopnea vs obstructive

Post by BigTex » Sat Mar 31, 2012 2:52 pm

I dont know the difference between the two.

I often see hypopnea higher then obstructive numbers.

could someone please tell me the difference and if its significant to getting a successful night?
example:
Last night my AHI was 7.73
Hypoena - 3.36
Apnea - 0
Obstructive - 3.70

Channel Min Med 95% Max
PressurePressure (cmH20)
W-Avg: 12.00 12.00 12.00 12.00 12.00
EPAPExpiratory Pressure (cmH20)
W-Avg: 9.00 9.00 9.00 9.00 9.00
Minute Vent.Minute Ventilation (L/min)
W-Avg: 12.09 2.25 11.38 19.50 27.62
Resp. RateRespiratory Rate (breaths/min)
W-Avg: 20.23 4.40 17.40 39.60 50.00
Flow LimitFlow Limit Graph (0-1)
W-Avg: 0.01 0.00 0.05 0.51 0.85
LeaksLeak Rate (L/min)
W-Avg: 4.50 0.00 4.80 16.80 32.91
SnoreSnore (unknown)
W-Avg: 0.13 0.00 0.12 0.34 0.59
Insp TimeInspiratory Time (seconds)
W-Avg: 1.62 0.26 1.56 2.24 3.20
Exp TimeExpiratory Time (seconds)
W-Avg: 1.62 0.04 1.62 2.22 2.93
Tidal VolumeTidal Volume (ml)
W-Avg: 629.39 80.00 620.00 1000.00 1580.00

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Pugsy
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Location: Missouri, USA

Re: Hypopnea vs obstructive

Post by Pugsy » Sat Mar 31, 2012 3:59 pm

In my signature is a link to the SleepyHead Glossary which offers definitions of the terms.
Also you can find a glossary in the CPAP Wiki...the light bulb at the top of the page.

ResMed and Respironics have minor differences in the % of reduction in flow to meet the criteria.
Mainly Hyponeas are a partial collapse of the airway resulting in a partial reduction in airflow.
Obstructive Apneas are more like a total collapse of the airway resulting in an even greater reduction in flow. Both have to last at least 10 seconds to meet criteria.

Central Apneas (Clear Airway) are when there is a cessation of breathing lasting 10 seconds or more but the airway is open with no collapse of the airway.

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pap4life
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Joined: Tue Jan 25, 2011 12:08 pm
Location: Florida

Re: Hypopnea vs obstructive

Post by pap4life » Sat Mar 31, 2012 5:54 pm

All apneas regardless of type are significant to your sleep and health.

>>Apnea<< means secession of breathing.

obstructive apnea means ..you stopped breathing because your airway was closed for 10 secs or longer.
hypopnea means you had a partial closure or the obstructive apnea was less then 10 seconds.
central apnea means you stopped breathing because your brain failed to signal your diaphram to contract or expand.

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Pugsy
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Location: Missouri, USA

Re: Hypopnea vs obstructive

Post by Pugsy » Sat Mar 31, 2012 6:03 pm

posting.php?mode=reply&f=1&t=76246
Hyponeas aren't less than 10 seconds. The must be 10 seconds or longer along with some other criteria.

"In the context of diagnosis and treatment of sleep disorders, a hypopnea event is not considered to be clinically significant unless there is a 30% (or greater) reduction in flow lasting for 10 seconds or longer and an associated 4% (or greater) desaturation in the person's O2 levels, or if it results in arousal or fragmentation of sleep.

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BigTex
Posts: 58
Joined: Tue Feb 21, 2012 12:17 am
Location: Houston, TX

Re: Hypopnea vs obstructive

Post by BigTex » Sun Apr 01, 2012 12:12 pm

Thank you for the answers.

I did not really get across what I was looking for.

I had already checked the definitions.

What I am trying to understand is if the cpap will treat both types.
I assume thats the case.

I am still struggling a bit with the cpap but its much better after I increased the pressure to 11.
For the last 4-5 days the AHI has gone up a little bit. I think my mask is leaking more.
not sure why.

I think I am in the "fine tuning mode" now, getting the numbers below 5.
Hyponea seems to be higher then obstructive several nights.
I wonder if need to increase the pressure?

Also, when I sleep on my back (something I really need to) my numbers are getting much worse.
Again, I am thinking the pressure needs to be higher when I sleep on my back.

comments and suggestions appreciated.

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Pugsy
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Location: Missouri, USA

Re: Hypopnea vs obstructive

Post by Pugsy » Sun Apr 01, 2012 12:18 pm

Hyponeas and obstructive apneas are both caused from a collapse (full or partial of the airway)
CPAP therapy pressure treats both because it is the pressure that hopefully will hold the airway open and prevent the collapse from occurring.

CPAP therapy treats the obstructive components which are the obstructive apneas and hyponeas.
CPAP therapy does nothing to prevent or help reduce open airway events.

_________________
Machine: AirCurve™ 10 VAuto BiLevel Machine with HumidAir™ Heated Humidifier
Additional Comments: Mask Bleep Eclipse https://bleepsleep.com/the-eclipse/
I may have to RISE but I refuse to SHINE.