SLEEP ANALYSIS REPORT

Name :  	CATRON, LAURA	10/17/2005		

Recording Technician Comments:
Patient seen in the Sleep Laboratory for nocturnal polysomnogram.  Procedure explained, standard montage employed, including the appropriate sensors for the continuous recording of EOG, EEG, EMG of the chin and anterior tibialis muscles, EKG, respiratory movements of the chest, abdomen and air flow at the nose and mouth, pulse oximetry, body position and tracheal sound.  The patient was calm and cooperative throughout.  The study was continuously observed by a technician and recorded via infrared video photography.

Scoring Technician Comments:
The total recording time was 434.7 minutes of which 345.9 minutes was sleep.  Sleep efficiency was fair at 79.6%.  Overall, there were 45 respiratory events, of which 38 were obstructive apneas and 7 were obstructive hypopneas.  The AHI for REM was 26.7, for NREM 5.0 and for sleep 7.8.  Positional dependency was exhibited, with an AHI of 11.1 while the patient was supine versus 0.6 in non-supine positions.  Snoring was observed in all body positions and is described as loud.  There were 22 desaturations with a nadir of 85.7%.  There were 69 PLMs with an index of 12.0.  The PLMs were moderate in nature.  There were 15 awakenings and 269 arousals.  35 of the arousals were associated with respiratory events, 197 were spontaneous in nature and 37 were associated with PLMs.  There were no arrhythmia observed.  Spontaneous arousals mostly associated with flow reduction and/or limitation as noted on nasal pressure transducer.

Sleep Architecture

Time at Lights Off	11:45:20	
Time at Lights On	07:00:00	
Total Recording Time (TRT)	434.7  min.	
Total Sleep Period (TSP)	424.4  min.	
Total Sleep Time (TST)	345.9  min.	
Sleep Efficiency (SE)	79.6  %	
		
Sleep Onset Latency (SOL)	10.2  min.	
Number of Stage 1 Shifts	52	
Number of Stage Shifts	162	
Number of Awakenings	15	
		
Number of REM Periods	3	
REM Latency	118.0  min.	
REM Latency minus Awake	115.5  min.	

Sleep Stages

STAGES
	TIME
(min.)	TST
(%)	LATENCY
(min.)	
				
WAKE	78.0			
STAGE 1	37.0	10.7	10.2	
STAGE 2	242.4	70.1	2.0	
STAGE 3	21.5	6.2	29.0	
STAGE 4	0.0	0.0	N.A	
STAGE REM	45.0	13.0	118.0	

Respiratory Analysis:               NREM                         REM                       TOTAL                      INDEX

Central Apneas	0	0	0	0.0	
Obstructive Apneas	19	19	38	6.6	
Mixed Apneas	0	0	0	0.0	
Hypopneas	6	1	7	1.2	
Apneas + Hypopneas	25	20	45	7.8	

Respiratory Events With Arousals

PARAMETER	INDEX	TOTAL	
			
Total Events	6.1	35	
NREM	3.8	19	
REM	21.3	16	

Apnea Events

PARAMETER	CENTRAL	OBSTRUCTIVE	MIXED	TOTAL	
					
Number	0	38	0	38	
Index	0.0	6.6	0.0	6.6	
Mean Duration	N/A	16.7	N/A	16.7	
Longest Duration	N/A	23.5	N/A	23.5	
Occur in REM	0	19	0	19	
Occur in NREM	0	19	0	19	
REM Index	0.0	25.3	0.0	25.3	
NREM Index	0.0	3.8	0.0	3.8	

Hypopnea Events

PARAMETER	CENTRAL	OBSTRUCTIVE	MIXED	TOTAL	
					
Number	0	7	0	7	
Index	0.0	1.2	0.0	1.2	
Mean Duration	N/A	19.1	N/A	19.1	
Longest Duration	N/A	28.4	N/A	28.4	
Occur in REM	0	1	0	1	
Occur in NREM	0	6	0	6	
REM Index	0.0	1.3	0.0	1.3	
NREM Index	0.0	1.2	0.0	1.2	

Respiratory Events and Body Position		       RDI and REM/NREM Sleep

PARAMETER	INDEX	TOTAL		PARAMETER	INDEX	
						
Apneas and Hypopneas	7.8	45		REM RDI	26.7	
Supine Events	11.1	44		NREM RDI	5.0	
Non-Supine Events	0.6	1		Sleep RDI	7.8	

Arousal Analysis:           NREM             INDEX             REM             INDEX         TOTAL          INDEX

Total Arousals	234	46.7	35	46.7	269	46.7	
PLM’s	64	12.8	5	6.7	69	12.0	
PLM Arousals	35	7.0	2	2.7	37	6.4	
Respiratory Arousals	19	3.8	16	21.3	35	6.1	
Spontaneous Arousals	180	35.9	17	22.7	197	34.2	

PLMs and Sleep Stages

STAGES	PLM-AROUSAL INDEX	ALL-PLM
INDEX	PLM-AROUSAL TOTAL	ALL-PLM TOTAL	
					
Total Sleep	6.4	12.0	37	69	
Stage 1	11.4	11.4	7	7	
Stage 2	6.9	14.1	28	57	
Stage 3	0.0	0.0	0	0	
Stage 4	0.0	0.0	0	0	
Stage REM	2.7	6.7	2	5	

PLM Events With Arousals

PARAMETER	INDEX	TOTAL	
			
Total Events	6.4	37	
NREM	7.0	35	
REM	2.7	2	

PLM Events W/O Arousals

PARAMETER	INDEX	TOTAL	
			
Total Events	5.6	32	
NREM	5.8	29	
REM	4.0	3	

Oxygen Saturation

PARAMETER	AWAKE	NREM	REM	TOTAL RECORD	
					
Mean SaO2 %	94.3	93.3	93.4	93.5	
Min SaO2 %	89.7	86.7	85.7	85.7	
Max SaO2 %	97.0	97.0	96.6	97.0	
					
% Duration of SaO2 In Range :					
90 – 100 %	97.8	99.0	96.6	98.5	
80 – 90 %	0.0	0.8	3.4	0.9	
70 – 80 %	0.0	0.0	0.0	0.0	
60 – 70 %	0.0	0.0	0.0	0.0	
50 – 60 %	0.0	0.0	0.0	0.0	
Below 50 %	0.0	0.0	0.0	0.0	

Desaturations

Percent desaturation required	4	
Total number of desaturations	22	
Desaturation Index ( / hr)	3.8	
Basal O2 during sleep	95.3	
Average low O2 during all desaturations	89.5	
Number of desaturations < 90	11	
Average duration of desaturations < 90	53.7	
Minimum O2 value	85.7	

RESPIRATORY EVENT SUMMARY

GRAPHIC SUMMARY