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KMID : 1002120090060020093
Journal of Korean Sleep Research Society
2009 Volume.6 No. 2 p.93 ~ p.96
Retrospective and prospective memory depending on the type of cue in obstructive sleep apnea patients: Questionnaire study
Kim Kwang-Ki

Nam Hyun-Woo
Byun Eun-Hee
Abstract
Background: Obstructive sleep apnea (OSA) is common and causes cognitive dysfunction including memory failure. This study examined the subjective failure frequencies of retrospective and prospective memory when there were two different cues (self- and environmental-cued) in patients with OSA using questionnaire.

Method: Forty-three patients who underwent polysomnography and were diagnosed as OSA were included. The OSA patients were categorized into 3 groups based on the scores of the apnea-hypopnea index (AHI). All patients answered the questionnaire of 16 questions. The questions were divided into four categories as a result of the combination of memory type (prospective and retrospective memory) and cueing (self-cue vs. environmentally-cued).

Results: All patient groups showed subjective memory failure in both retrospective and prospective memory. The subjective memory failure frequency of the self-cued condition was higher than the environmentally-cued condition when patients in the retrospective memory condition. On the other hand, there was no significant difference in the prospective memory condition.

Conclusion: OSA patients have dysfunction in both retrospective and prospective memory. The pattern of dysfunction is different depending on the kind of cue.
KEYWORD
Obstuctive sleep apnea, Prospective memory, Retrospective memory, Questionnaire
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