hypnograms for sleep apnea


  • Hypnogram shows stages of sleep, apnea/hyponea/desaturations
  • shows how many cycles of each sleep stage
  • usually 3-4 REM
  • wake: high frequency
  • N1: low amp, mixed freq
  • N2: K-complex, spindles
  • N3: delta waves, slow waves
  • REM: eye movements