Sleep Efficiency  81%
REM Latency  74.5 minutes

Stage 1  7.7%
Stage 2  64.2%
State 3/4  14.9%
REM  13.2%

Arousals  197
Awakenings  0
REM Awakenings  1

RDI 3.3
Total A+H  19
Obstructive  2
Central  1
Mixed  0
Hypopnea 16

Apnea index, NREM    0 (non-supine)  0 (supine)
Apnea index, REM  5.1 (non-supine)  0 (supine)
Hypopnea index, NREM  0 (non-supine)  1.5 (supine)
Hypopnea index, REM  5.1 (non-supine)  54.0 (supine)

AHI, NREM  0 (non-supine)  1.5 (supine)
AHI, REM  10.1 (non-supine)  54.0 (supine)

SaO2 NREM 90-97 mean 95
SaO2 REM 89-97 mean 95

I woke several times during the test (I remember at least 3 or 4) yet the report lists no "awakenings" (though it does list 1 "REM awakening").  Is that because they were not the result of a respiratory event?  I know one time I awoke because I was just too warm.  My chart (if I'm reading it correctly) shows 13 awakenings.

Now the biggest question I have is:  It appears that the RDI simply only includes apneas and hypopneas which only added up to 19.  Yet I had 197 arousals!  How do I know how many of the arousals were caused by other respiratory events that were not apneas or hypopneas (RERAs)?  Is it assumed that ALL of them were?  I thought the definition of RDI was AHI + RERA?  Many of the arousals (most maybe) did not seem to cause a change from one sleep stage to another.

The diagnosis was UARS or REM-dependant OSA.  It does appear I only have apnea/hypopnea trouble only during REM, especially in supine but the arousals occurred pretty steadily all night long regardless of sleep stage or position so that would point to UARS.