Excessive fragmentary myoclonus (EFM) does not require symptomatic treatment, but further evaluation is suggested as electrophysiological abnormalities are present in 50% of cases. Nine percent of healthy sleepers meet the criteria for EFM, raising the question if current, arbitrarily defined, cutoffs are valid.

2012年4月9日 · Excessive fragmentary myoclonus (EFM), previously called excessive fragmentary hypnic myoclonus, is defined by the American Academy of Sleep Medicine (AASM) as at least five characteristic fragmentary myoclonus electromyographic potentials per minute during at least 20 minutes of NREM sleep.

2013年1月15日 · In this study using the AASM scoring guidelines, we manually analyzed the polysomnograms (PSGs) of 8 consecutive patients with obvious EFM to assess EFM amplitude and sleep stage distribution. We also analyzed the effect of …

Excessive fragmentary myoclonus (EFM) is a polysomnographic finding registered by the surface electromyography (EMG) and characterized as a result of the muscle activity consisting of sudden, isolated, arrhythmic, asynchronous and asymmetric brief twitches.

2023年11月3日 · Previous studies suggested that EFM is a common incidental finding in sleep laboratory (polysomnography [PSG]) studies (Frauscher et al., 2011), but prevalence studies in the general population are missing.

2016年6月1日 · Patients with an incidental PSG diagnosis of EFM should undergo electrophysiological workup for peripheral nerve pathology. Excessive fragmentary myoclonus is a frequent incidental finding in patients undergoing polysomnography for other reasons.

2017年3月1日 · Patients with EFM had less REM sleep (%/SPT; median (IQR); 13.8 (9.1-18.2) vs. 17.1 (10.1-20.5); p = 0.008) and the PLMS-Index was higher in patients with EFM than in those without (16.2 vs....

To highlight the differences between adults and children in terms of staging and scoring of sleep. Score sleep stages in 30 seconds, sequential epochs, commencing at the start of the study. Assign a stage to each epoch. characteristic of Stage REM.

2016年9月1日 · Polysomnography (PSG) is the gold standard diagnostic test for sleep disorders. During PSG, several physiological parameters are monitored while the patient is asleep.

Excessive fragmentary myoclonus (EFM) does not require symptomatic treatment, but further evaluation is suggested as electrophysiological abnormalities are present in 50% of cases. Nine percent of healthy sleepers meet the criteria for EFM, raising the question if current, arbitrarily defined, cutoffs are valid.