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2026 Already Passed Frequently 77
Comprehensive study guide for the ATI CMS Fundamentals exam (2026).
All 77 questions and answers verified and graded.
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Stage 1 Sleep Stage 2 Sleep
- Very light sleep - Deeper sleep
- Only a few minutes long - 10-20 min long
- Awaken easily - Increased relaxation
- Feels relaxed and drowsy
Stage 3 Sleep Stage 4 Sleep
- Beginning of deep sleep - "Delta Sleep"
- 15-30 min long - Deepest sleep
- Difficult to awaken - 15-30 min long
- Very difficult to awaken
- Sleep walking, sleep talking, enuresis
REM Insomnia
- vivid dreaming inability to sleep
- 90 min after falling asleep
- Very difficult to awaken
- cognitive restoration