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Table 3 Common Sleep Problems/Disorders in Hemodialysis Patients: Comparison of Subjective and Objective Measures

From: Nocturnal sleep, daytime sleepiness, and quality of life in stable patients on hemodialysis

Problem Subjective (prior six months) Objective (one night of PSG and daytime MSLT)
Insufficient sleep Amount of sleep typically obtained Total sleep time
Insomnia/Sleep Fragmentation Difficulty:  
  • Falling asleep Nocturnal sleep latency
  • Staying asleep Sleep efficiency
  • Early morning awakenings Arousals
  • Unrefreshing sleep  
Daytime sleepiness Frequency of daytime napping Nocturnal sleep latency
  Epworth Sleepiness Scale Multiple Sleep Latency Test
Periodic Limb Movement Disorder Waking from legs kicking Periodic limb movements/hour
Sleep Apnea Syndrome Waking from gasping/choking Apneas/hour
  1. PSG = polysomnography, MSLT = Multiple Sleep Latency Test