27
Report Generation
JON W. ATKINSON
NOTE: This chapter corresponds to Chapter 33 in Fundamentals of Sleep Technology, 2nd edition.
Consider the following information for questions 1 to 3.
Lights off epoch = 15
Lights on epoch = 931
Sleep onset epoch = 30
Stage R onset epoch = 42
1. What is the total recording time (TRT)?
2. What is sleep onset latency (SOL)?
3. What is stage R latency (RL)?
Answer questions 4 to 8 using the information below.
Total recording time (TRT) = 400 minutes
Stage N1 = 80 epochs
Stage N2 = 400 epochs
Stage N3 = 20 minutes
Stage R = 100 minutes
4. What is the percentage of total sleep time (%TST) of N1?
5. What is the %TST of N2?
6. What is the %TST of N3?
7. What is the %TST of stage R?
8. What is the sleep efficiency (SE)?
For questions 9 to 10, use the following information.
Sleep efficiency (SE) = 80%
Total recording time (TRT) = 400 minutes
Obstructive apneas (OA) = 40
Mixed apneas (MA) = 10
Hypopneas (H) = 100
9. Calculate the total sleep time (TST).
10. Calculate the apnea–hypopnea index (AHI).
Questions 11 to 20 are based on the following information.
Stage N1 sleep = 30 minutes
Stage N2 sleep = 200 minutes
Stage N3 sleep = 86 minutes
Stage R = 80 minutes
Sleep efficiency = 90%
Periodic limb movements (PLM) = 200
PLM with arousals = 80
Obstructive apneas (OA) = 60
Mixed apneas (MA) = 20
Central apnea (CA) = 10
Hypopneas (H) = 90
11. What is the total recording time (TRT)?
12. What is the periodic limb movement index (PLMI)?
13. What is the periodic limb movement with arousal index (PLMArI)?
14. What is the apnea index (AI)?
15. What is the hypopnea index (HI)?
16. What is the apnea–hypopnea index (AHI)?
17. What is the percentage of total sleep time (%TST) of N1 sleep?
18. What is the %TST of N2 sleep?
19. What is the %TST of N3 sleep?
20. What is the %TST of stage R sleep?
Given the following information, answer questions 21 to 22.
Apneas = 100
Hypopneas = 200
AHI = 50 events per hour
Sleep efficiency (SE) = 75%
21. What is the total sleep time (TST)?
22. What is the total recording time (TRT)?
For questions 23 to 28, fill the blank cells in the grid below.
29. What is the arousal index (ArI) if there are 60 arousals recorded during 6 hours of total sleep time (TST)?
Questions 30 to 31 refer to the following information.
Lights off: epoch 24 (stage W)
Epoch 25: stage W
Epoch 26: stage W
Epoch 27: stage R
30. What is the sleep onset latency (SOL)?
31. What is stage R latency (RL)?
32. Oxygen desaturation index (ODI) is defined as the number of qualifying oxygen desaturation episodes per ______________ of sleep.
33. During a recording, oxygen saturation nadir is the:
A. Longest desaturation episode
B. Highest saturation level
C. Average saturation level
D. Lowest saturation level
34. Total recording time (TRT) minus total wake time (TWT) = ______________.
35. Total time in N1 + total time in N2 + total time in N3 = ______________.
36. Total time in N1 + total time in N2 + total time in N3 + total time in stage R = ______________.
For questions 37 to 40, consider the information presented in Table 27-1.
Table 27-1
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