Diagnostic yield of standard-wake and sleep EEG recordings

Pirgit Meritam; Elena Gardella; Jørgen Alving; Daniella Terney; Melita Cacic Hribljan; Sándor Beniczky

doi:10.1016/j.clinph.2018.01.056

Diagnostic yield of standard-wake and sleep EEG recordings

Pirgit Meritam, Elena Gardella, Jørgen Alving, Daniella Terney, Melita Cacic Hribljan, Sándor Beniczky

Department of Clinical Neurophysiology

15 Citations (Scopus)

Abstract

OBJECTIVE: To investigate whether Posterior Dominant Rhythm (PDR) can be reliably assessed in sleep-EEG recordings and to investigate the diagnostic yield of standard-wake and sleep-recordings.

METHODS: EEG recordings of 303 consecutive patients aged 18-88 years were analyzed. All patients had both standard-wake and sleep-recordings, including patients who had abnormal standard recordings. Melatonin was used in 6% of sleep EEGs, and sleep deprivation in 94%. The mean duration of sleep was 41 min. We measured the PDR frequency in standard and sleep-recordings, both before and after sleep. We compared the diagnostic yield of standard-wake and sleep EEG recordings.

RESULTS: Compared to standard EEG, sleep-recordings showed a significantly lower PDR frequency, both when measured before and after sleep (p < 0.001). One-hundred-fifty-six patients (51%) had normal standard recordings, and 35 of them (22%) had abnormal findings in the sleep-recording. One-hundred-forty-seven patients had abnormal standard recordings and in 16 of them (11%) these abnormalities were not present in sleep-recording.

CONCLUSIONS: PDR is significantly slower in the wake periods of sleep-recordings, compared to standard wake recordings.

SIGNIFICANCE: Sleep and standard wake recordings are complementary.

Original language	English
Journal	Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
Volume	129
Issue number	4
Pages (from-to)	713-716
Number of pages	4
ISSN	1388-2457
DOIs	https://doi.org/10.1016/j.clinph.2018.01.056
Publication status	Published - Apr 2018

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10.1016/j.clinph.2018.01.056

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title = "Diagnostic yield of standard-wake and sleep EEG recordings",

abstract = "OBJECTIVE: To investigate whether Posterior Dominant Rhythm (PDR) can be reliably assessed in sleep-EEG recordings and to investigate the diagnostic yield of standard-wake and sleep-recordings.METHODS: EEG recordings of 303 consecutive patients aged 18-88 years were analyzed. All patients had both standard-wake and sleep-recordings, including patients who had abnormal standard recordings. Melatonin was used in 6\% of sleep EEGs, and sleep deprivation in 94\%. The mean duration of sleep was 41 min. We measured the PDR frequency in standard and sleep-recordings, both before and after sleep. We compared the diagnostic yield of standard-wake and sleep EEG recordings.RESULTS: Compared to standard EEG, sleep-recordings showed a significantly lower PDR frequency, both when measured before and after sleep (p < 0.001). One-hundred-fifty-six patients (51\%) had normal standard recordings, and 35 of them (22\%) had abnormal findings in the sleep-recording. One-hundred-forty-seven patients had abnormal standard recordings and in 16 of them (11\%) these abnormalities were not present in sleep-recording.CONCLUSIONS: PDR is significantly slower in the wake periods of sleep-recordings, compared to standard wake recordings.SIGNIFICANCE: Sleep and standard wake recordings are complementary.",

author = "Pirgit Meritam and Elena Gardella and J{\o}rgen Alving and Daniella Terney and \{Cacic Hribljan\}, Melita and S{\'a}ndor Beniczky",

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T1 - Diagnostic yield of standard-wake and sleep EEG recordings

AU - Meritam, Pirgit

AU - Gardella, Elena

AU - Alving, Jørgen

AU - Terney, Daniella

AU - Cacic Hribljan, Melita

AU - Beniczky, Sándor

PY - 2018/4

Y1 - 2018/4

N2 - OBJECTIVE: To investigate whether Posterior Dominant Rhythm (PDR) can be reliably assessed in sleep-EEG recordings and to investigate the diagnostic yield of standard-wake and sleep-recordings.METHODS: EEG recordings of 303 consecutive patients aged 18-88 years were analyzed. All patients had both standard-wake and sleep-recordings, including patients who had abnormal standard recordings. Melatonin was used in 6% of sleep EEGs, and sleep deprivation in 94%. The mean duration of sleep was 41 min. We measured the PDR frequency in standard and sleep-recordings, both before and after sleep. We compared the diagnostic yield of standard-wake and sleep EEG recordings.RESULTS: Compared to standard EEG, sleep-recordings showed a significantly lower PDR frequency, both when measured before and after sleep (p < 0.001). One-hundred-fifty-six patients (51%) had normal standard recordings, and 35 of them (22%) had abnormal findings in the sleep-recording. One-hundred-forty-seven patients had abnormal standard recordings and in 16 of them (11%) these abnormalities were not present in sleep-recording.CONCLUSIONS: PDR is significantly slower in the wake periods of sleep-recordings, compared to standard wake recordings.SIGNIFICANCE: Sleep and standard wake recordings are complementary.

AB - OBJECTIVE: To investigate whether Posterior Dominant Rhythm (PDR) can be reliably assessed in sleep-EEG recordings and to investigate the diagnostic yield of standard-wake and sleep-recordings.METHODS: EEG recordings of 303 consecutive patients aged 18-88 years were analyzed. All patients had both standard-wake and sleep-recordings, including patients who had abnormal standard recordings. Melatonin was used in 6% of sleep EEGs, and sleep deprivation in 94%. The mean duration of sleep was 41 min. We measured the PDR frequency in standard and sleep-recordings, both before and after sleep. We compared the diagnostic yield of standard-wake and sleep EEG recordings.RESULTS: Compared to standard EEG, sleep-recordings showed a significantly lower PDR frequency, both when measured before and after sleep (p < 0.001). One-hundred-fifty-six patients (51%) had normal standard recordings, and 35 of them (22%) had abnormal findings in the sleep-recording. One-hundred-forty-seven patients had abnormal standard recordings and in 16 of them (11%) these abnormalities were not present in sleep-recording.CONCLUSIONS: PDR is significantly slower in the wake periods of sleep-recordings, compared to standard wake recordings.SIGNIFICANCE: Sleep and standard wake recordings are complementary.

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Diagnostic yield of standard-wake and sleep EEG recordings

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