I Got My Sleep Study (PSG) Report This Evening!

I'm the same person who wrote the "I'm confused about my sleep study" thread. Anyway, I must say that I am VERY impressed at how quickly I got my results! I mean the test was just 2 nights ago! Now I haven't been spoken to by the doctor, but I have been asked to come back and be fitted for a CPAP. Here are my results, I could use some input since I haven't had it explained to me by my doctor yet.

Sleep Staging: The patient slept a total of 270.0 minutes, with a sleep efficiency of 68%. The patient's sleep latency was 36.5 minutes and REM latency was 340.5 minutes. The intermittent wake time during sleep was 90.5 minutes. Total time in bed was 360.5 minutes. Sleep Staging/% total sleep time: Stage 1, 12.4%. Stage 2, 83.1%, Stage 3, 0%. Stage 4, 0%. Stage REM, 4.4%.

Cardiac Monitoring: The patient had a minimum heart rate of 70 bpm, and a maximum heart rate of 90 bpm. No significant cardiac dysrhythmias were noted.

Limb Movements: The patient exhibited 0 periodic limb movement events.

Sleep Quality: The patient exhibited 46 total arousals, 13 associated with respiratory events, 0 associated with periodic limb movements, 31 spontaneous arousals, for an arousal index of 10.2/hr. Patient characterized sleep as poor.

Comprehensive Ventilatory Monitoring: The average O2 saturation during non-REM sleep was 93%, and the average O2 saturation during REM sleep was 89.0% (the lowest being 82.0%). The patient exhibited 9 obstructive, 0 central, and 0 mix apneic events (average duration of 13 seconds, the longest being 21 seconds) and 132 hypopneas (average duration of 16 seconds, the longest being 29 seconds) resulting in an overall apnea-hypopnea index (AHI) of 31.3 per hour distributed as 30.5 per hour Non-REM, and 50.0 per hour REM. Grade 4 snoring was noted.

Impression: This polysomnogram demonstrates sleep fragmentation secondary to Obstructive Sleep Apnea Syndrome with an overall Apnea-Hypopnea Index (AHI) of 31.3 per hour and low oxygen saturation of 82.0%.

Recommendations: The patient is advised to return to the sleep laboratory for a Continuous Positive Airway Pressure (CPAP) titration.

JayPSU wrote: Sleep Staging: The patient slept a total of 270.0 minutes, with a sleep efficiency of 68%. The patient's sleep latency was 36.5 minutes and REM latency was 340.5 minutes. The intermittent wake time during sleep was 90.5 minutes. Total time in bed was 360.5 minutes. Sleep Staging/% total sleep time: Stage 1, 12.4%. Stage 2, 83.1%, Stage 3, 0%. Stage 4, 0%. Stage REM, 4.4%

I am looking at my report from 4 years ago, and merely comparing both of our numbers and what the sleep doctor told me was abnormal about mine:

Your initial sleep latency (time it took to get to Stage 1) was a little delayed but considering most people's are because they are hooked up to all these gadgets and sleeping in an unfamiliar surroundings, my sleep latency was 15 mins, yours was almost 40 mins. Your REM latency, may not be within normal limits. REM latency is how long it takes from initial sleep onset til a person reaches their first cycle of REM, the average time is 90 mins. Mine was 241 minutes and the doctor termed mine as extremely prolonged REM latency, and yours was longer than mine. Could be because you never reached deep delta sleep (stages 3 and 4) Normal stages of sleep are :Stage 1) 5-10%, stage 2) 40-50%, stage 3/4) 20% and REM 20-25%. ( these normal ranges were listed on my report next to my numbers from Beth Israel Hospital in Boston)

Your oxygen levels dipping into the 80's I believe is not considered normal. Typically oxygen should stay around 92-95% So this is good news that you are going to be titrated and the sleep techs can figure out what pressures need to be set on the CPAP to keep your airway open.

Of course I suppose every hospital/sleep clinic and physician might have their own opinions on what is normal or abnormal given your report information, but I was merely comparing your numbers to the my numbers and report from 2002. It goes without saying, I'm not a physician and you need to hear from your physician to be given your "diagnosis" and so forth.

Good Luck, you'll probably have many more ?'s once you get started and everyone here is very helpful and knowledgeable, so write back and fill us in once you get your equipment.

Suzy

Thanks so much. I think the REM latency was due to the fact that I just couldn't sleep very well that night. As for the rest of the report, I'm still waiting for some more of the knowlegable people on this board to fill me in

In reading this site it appears that my next challenge will be dealing with a DME!

I must say Suzy's answer seems very knowledgeable to me!

Suzy wrote:Normal stages of sleep are :Stage 1) 5-10%, stage 2) 40-50%, stage 3/4) 20% and REM 20-25%. ( these normal ranges were listed on my report next to my numbers from Beth Israel Hospital in Boston)

Your oxygen levels dipping into the 80's I believe is not considered normal. Typically oxygen should stay around 92-95% So this is good news that you are going to be titrated and the sleep techs can figure out what pressures need to be set on the CPAP to keep your airway open.

If you find the terminology strange, here's a short translation:

Your sleep was badly disrupted by total obstructions (apneas) and partial obstructions (hypopneas) - to the total count of about 31 such disruptions per hour. That is what A(apnea) H(hypopnea) I(index) means.

While you're waiting for titration, take a peak at the cpap videos, and the faqs and cpapopedia above the messaga board. cpap.com also have a great faq link on their site.

Welcome to club friend. Good luck.
O.

DEFINITIONS:
APNEA = cessation of airflow for 10 seconds or greater.
HYPOAPNEA =>50% decrease in airflow for 10 seconds or greater with a decrease in oxygen saturation of >3%.
APNEA/HYPOAPNEA INDEX (AHI) = apnea plus (+) hypoapnea/hour of sleep.
RESPIRATORY AROUSAL INDEX (RAI) = AHI +snoring related EEG arousals/hour of sleep.
AHI/RAI** Scale =<5 events /hour = (none); 5-15 events/hour = (mild); 15-30 events/hour = (moderate); >30 events/hour = (severe).
Respiratory related sleep fragmentation: Sleep arousals due to respiratory events or snoring.
Desaturation = Drop in O2 oximetry distribution saturation by 3% below average saturation.
SaO2 scale: >89%=(none); 85-89%=(mild);80-84%=(moderate); <80% (severe).
EPWORTH SLEEPINESS SCALE =<10=(does not indicate EDS (Excessive Daytime Somnolence));10-15=(indicates daytim somnolence-not excessive);>16 (indicates EDS).
RESPIRATORY EFFORT RELATED AROUSALS (RERAs)=Sleep Arousals due to respiratory events characterized by pressure flow limitations in the airflow indicator channel without significant O2 desaturations.
StageIII and StageIV are combined and referred to as Deep Sleep.
Sleep Efficiency = Normal is >80%