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The validity of the PAM-RL device for evaluating periodic limb movements in sleep and an investigation on night-to-night variability of periodic limb movements during sleep in patients with restless legs syndrome or periodic limb movement disorder using this system.
Sleep Med. 2014 Jan; 15(1):138-43.SM

Abstract

BACKGROUND

The status of night-to-night variability for periodic limb movements in sleep (PLMS) has not been clarified. With this in mind, we investigated the validity of PLMS measurement by actigraphy with the PAM-RL device in Japanese patients with suspected restless legs syndrome (RLS) or periodic limb movement disorder (PLMD) and the night-to-night variability of PLMS among the subjects.

METHODS

Forty-one subjects (mean age, 52.1±16.1 years) underwent polysomnography (PSG) and PAM-RL measurement simultaneously. Thereafter, subjects used the PAM-RL at home on four more consecutive nights.

RESULTS

The correlation between PLMS index on PSG (PLMSI-PSG) and PLM index on PAM-RL (PLMI-PAM) was 0.781 (P<.001). When the PLMSI cutoff value on PSG was set at 15 episodes per hour, the cutoff value for predicting this PLMSI level was 16.0 episodes per hour. When the condition was set to the level in which the mean interclass correlation coefficient reached ≥0.9, the number of required nights for repeated measurements was 26 nights for subjects with PLMI of <15 episodes per hour and three nights for those with PLMI ≥15 episodes per hour on PAM-RL.

CONCLUSIONS

PAM-RL is thought to be valuable for assessing PLMS even in Japanese subjects. Recording of PAM-RL for three or more consecutive nights may be required to ensure the screening reliability of a patient with suspected pathologically frequent PLMS.

Authors+Show Affiliations

Department of Somnology, Tokyo Medical University, Tokyo, Japan; Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan; Yoyogi Sleep Disorder Center, Tokyo, Japan.Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan; Yoyogi Sleep Disorder Center, Tokyo, Japan.Department of Somnology, Tokyo Medical University, Tokyo, Japan; Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan; Yoyogi Sleep Disorder Center, Tokyo, Japan.Department of Somnology, Tokyo Medical University, Tokyo, Japan; Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan; Yoyogi Sleep Disorder Center, Tokyo, Japan.Department of Somnology, Tokyo Medical University, Tokyo, Japan; Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan; Yoyogi Sleep Disorder Center, Tokyo, Japan.Department of Somnology, Tokyo Medical University, Tokyo, Japan.Department of Somnology, Tokyo Medical University, Tokyo, Japan.Department of Somnology, Tokyo Medical University, Tokyo, Japan.Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan; Yoyogi Sleep Disorder Center, Tokyo, Japan.Department of Somnology, Tokyo Medical University, Tokyo, Japan; Japan Somnology Center, Neuropsychiatric Research Institute, Tokyo, Japan; Yoyogi Sleep Disorder Center, Tokyo, Japan. Electronic address: inoue@somnology.com.

Pub Type(s)

Clinical Trial
Journal Article
Validation Study

Language

eng

PubMed ID

24269130

Citation

Kobayashi, Mina, et al. "The Validity of the PAM-RL Device for Evaluating Periodic Limb Movements in Sleep and an Investigation On Night-to-night Variability of Periodic Limb Movements During Sleep in Patients With Restless Legs Syndrome or Periodic Limb Movement Disorder Using This System." Sleep Medicine, vol. 15, no. 1, 2014, pp. 138-43.
Kobayashi M, Namba K, Ito E, et al. The validity of the PAM-RL device for evaluating periodic limb movements in sleep and an investigation on night-to-night variability of periodic limb movements during sleep in patients with restless legs syndrome or periodic limb movement disorder using this system. Sleep Med. 2014;15(1):138-43.
Kobayashi, M., Namba, K., Ito, E., Nishida, S., Nakamura, M., Ueki, Y., Furudate, N., Kagimura, T., Usui, A., & Inoue, Y. (2014). The validity of the PAM-RL device for evaluating periodic limb movements in sleep and an investigation on night-to-night variability of periodic limb movements during sleep in patients with restless legs syndrome or periodic limb movement disorder using this system. Sleep Medicine, 15(1), 138-43. https://doi.org/10.1016/j.sleep.2013.08.790
Kobayashi M, et al. The Validity of the PAM-RL Device for Evaluating Periodic Limb Movements in Sleep and an Investigation On Night-to-night Variability of Periodic Limb Movements During Sleep in Patients With Restless Legs Syndrome or Periodic Limb Movement Disorder Using This System. Sleep Med. 2014;15(1):138-43. PubMed PMID: 24269130.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The validity of the PAM-RL device for evaluating periodic limb movements in sleep and an investigation on night-to-night variability of periodic limb movements during sleep in patients with restless legs syndrome or periodic limb movement disorder using this system. AU - Kobayashi,Mina, AU - Namba,Kazuyoshi, AU - Ito,Eiki, AU - Nishida,Shingo, AU - Nakamura,Masaki, AU - Ueki,Yoichiro, AU - Furudate,Naomichi, AU - Kagimura,Tatsuo, AU - Usui,Akira, AU - Inoue,Yuichi, Y1 - 2013/10/31/ PY - 2013/03/13/received PY - 2013/07/26/revised PY - 2013/08/10/accepted PY - 2013/11/26/entrez PY - 2013/11/26/pubmed PY - 2014/9/24/medline KW - Night-to-night variability KW - PAM-RL KW - Periodic limb movement KW - Polysomnography KW - Restless legs syndrome KW - Validation SP - 138 EP - 43 JF - Sleep medicine JO - Sleep Med VL - 15 IS - 1 N2 - BACKGROUND: The status of night-to-night variability for periodic limb movements in sleep (PLMS) has not been clarified. With this in mind, we investigated the validity of PLMS measurement by actigraphy with the PAM-RL device in Japanese patients with suspected restless legs syndrome (RLS) or periodic limb movement disorder (PLMD) and the night-to-night variability of PLMS among the subjects. METHODS: Forty-one subjects (mean age, 52.1±16.1 years) underwent polysomnography (PSG) and PAM-RL measurement simultaneously. Thereafter, subjects used the PAM-RL at home on four more consecutive nights. RESULTS: The correlation between PLMS index on PSG (PLMSI-PSG) and PLM index on PAM-RL (PLMI-PAM) was 0.781 (P<.001). When the PLMSI cutoff value on PSG was set at 15 episodes per hour, the cutoff value for predicting this PLMSI level was 16.0 episodes per hour. When the condition was set to the level in which the mean interclass correlation coefficient reached ≥0.9, the number of required nights for repeated measurements was 26 nights for subjects with PLMI of <15 episodes per hour and three nights for those with PLMI ≥15 episodes per hour on PAM-RL. CONCLUSIONS: PAM-RL is thought to be valuable for assessing PLMS even in Japanese subjects. Recording of PAM-RL for three or more consecutive nights may be required to ensure the screening reliability of a patient with suspected pathologically frequent PLMS. SN - 1878-5506 UR - https://www.unboundmedicine.com/medline/citation/24269130/The_validity_of_the_PAM_RL_device_for_evaluating_periodic_limb_movements_in_sleep_and_an_investigation_on_night_to_night_variability_of_periodic_limb_movements_during_sleep_in_patients_with_restless_legs_syndrome_or_periodic_limb_movement_disorder_using_this_system_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1389-9457(13)01182-9 DB - PRIME DP - Unbound Medicine ER -