scholarly journals Variability of Periodic Leg Movements in Various Sleep Disorders: Implications for Clinical and Pathophysiologic Studies

SLEEP ◽  
2005 ◽  
Keyword(s):  
Sleep Disorders ◽  
Periodic Leg Movements ◽  
Leg Movements

scholarly journals Pupillographic Sleepiness Test and Polysomnography in Nondemented Patients with Ischemic White Matter Lesions

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Ralf Landwehr ◽  
Robert Liszka
Keyword(s):  
Sleep Apnea ◽  
White Matter ◽  
Sleep Disorders ◽  
Daytime Sleepiness ◽  
White Matter Lesions ◽  
Primary Insomnia ◽  
Periodic Leg Movements ◽  
Nonrestorative Sleep ◽  
Pupillographic Sleepiness Test ◽  
Leg Movements

Background. Patients with ischemic white matter lesions (WML) frequently report nonrestorative sleep or daytime sleepiness. However, subjective estimations of sleep and sleepiness can differ considerably from objective measures. The pupillographic sleepiness test (PST) could identify patients with sleep disorders requiring polysomnography (PSG) and further treatment. Methods. We performed a PST and a PSG of 35 nondemented patients with WML, who reported nonrestorative sleep or daytime sleepiness, and assessed the diagnostic value of the pupillary unrest index (PUI). Sleep parameters were compared to normative data. Results. The mean PUI of WML patients was normal (5.89 mm/min) and comparable to PUIs of patients with other neurological disorders. All 9 of the 35 WML patients (25.7%) who had a PUI above normal also had clinically relevant sleep disorders (5: sleep apnea, 7: periodic leg movements, and 4: insomnia). Six patients with a normal PUI had mild to moderate primary insomnia. Conclusion. PST and PSG parameters were physiological in most patients with WML. Age-related changes and affective and neuropsychological disorders might account for their sleep-related complaints. An elevated PUI in patients with WML seems to indicate comorbid sleep disorders that require further diagnostic evaluation and treatment (sleep apnea, insomnia with periodic leg movements, but not primary insomnia).

scholarly journals RestEaze: An Emerging Technology to Characterize Leg Movements During Sleep

2021 ◽  
Author(s):  
Justin Brooks ◽  
Cody Feltch ◽  
Janet Lam ◽  
Christopher Earley ◽  
Ryan Robucci ◽  
...  
Keyword(s):  
Sleep Disorders ◽  
Assessment Tool ◽  
Measurement Techniques ◽  
Standard Of Care ◽  
Measurement Unit ◽  
Periodic Leg Movements ◽  
Leg Muscles ◽  
Sleep Assessment ◽  
Sleep Measurement ◽  
Leg Movements

Abstract Several sleep disorders are characterized by periodic leg movements during sleep including Restless Leg Syndrome, and can indicate disrupted sleep in otherwise healthy individuals. Current technologies to measure periodic leg movements during sleep are limited. Polysomnography and some home sleep tests use surface electromyography to measure electrical activity from the anterior tibilias muscle. Actigraphy uses 3-axis accelerometers to measure movement of the ankle. Electromyography misses periodic leg movements that involve other leg muscles and is obtrusive because of the wires needed to carry the signal. Actigraphy based devices require large amplitude movements of the ankle to detect leg movements (missing the significant number of more subtle leg movements) and can be worn in multiple configurations precluding precision measurement. These limitations have contributed to their lack of adoption as a standard of care for several sleep disorders. In this study, we develop the RestEaze sleep assessment tool as an ankle-worn wearable device that combines capacitive sensors and a 6-axis inertial measurement unit to precisely measure periodic leg movements during sleep. This unique combination of sensors and the form-factor of the device addresses current limitations of periodic leg movements during sleep measurement techniques. Pilot data collected shows high correlation with polysomnography across a heterogeneous participant sample and high usability ratings. RestEaze shows promise in providing ecologically valid, longitudinal measures of leg movements that will be useful for clinicians, researchers, and patients to better understand sleep.

Actimetry-documented persistent Periodic Limb Movements during EEG-confirmed deep General Anesthesia: a case report.

2019 ◽  
Author(s):  
Friedrich Lersch ◽  
Pascal Jerney ◽  
Heiko Kaiser ◽  
Cédric Willi ◽  
Katharina Steck ◽  
...  
Keyword(s):  
Case Report ◽  
Motor Activity ◽  
General Anesthesia ◽  
Burst Suppression ◽  
Periodic Limb Movements ◽  
Deep Sclerectomy ◽  
Limb Movements ◽  
Periodic Leg Movements ◽  
Increase Motor Activity ◽  
Leg Movements

Motor activity during general anesthesia (GA) without curarization is often interpreted as reflecting insufficient analgosedation. Here we present the case of an octogenarian scheduled for deep sclerectomy receiving opioid-sparing electroencephalography-(EEG)-guided anesthesia. Periodic Leg Movements (PLM) made their appearance with ongoing surgery while his raw EEG displayed a pattern of deep GA (burst suppression). To the best of our knowledge, this is the first description of actimetry-documented persisting PLM during EEG-monitored GA. Recognizing PLM in the context of GA is of importance for anesthesiologists, as increasing sedation may increase motor activity.

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