Carla Piano1,2, Anna Losurdo3, Giacomo Della Marca3, Marcella Solito1, Giovanna Calandra-Buonaura2, Federica Provini2, Anna Rita Bentivoglio1, Pietro Cortelli2. 1. Center for Parkinson Disease and Extrapyramidal Disorders, Movement Disorders Unit, Institute of Neurology, Catholic University, Rome, Italy. 2. IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy; Department of Biomedical and NeuroMotor Sciences (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy. 3. Sleep Disorders Unit, Institute of Neurology, Rome, Italy.
Abstract
STUDY OBJECTIVES: To evaluate the sleep pattern and the motor activity during sleep in a cohort of patients affected by Huntington disease (HD). DESIGN: Cross-sectional cohort study. SETTING: Sleep laboratory. PATIENTS: Thirty HD patients, 16 women and 14 men (mean age 57.3 ± 12.2 y); 30 matched healthy controls (mean age 56.5 ± 11.8 y). INTERVENTIONS: Subjective sleep evaluation: Epworth Sleepiness Scale (ESS); Berlin's Questionnaire, interview for restless legs syndrome (RLS), questionnaire for REM sleep behavior disorder (RBD). Clinical evaluation: disease duration, clinical severity (unified Huntington disease motor rating scale [UHDMRS]), genetic tests. Laboratory-based full-night attended video-polysomnography (V-PSG). MEASUREMENTS AND RESULTS: The duration of the disease was 9.4 ± 4.4 y, UHMDRS score was 55.5 ± 23.4, CAG repeats were 44.3 ± 4.1. Body mass index was 21.9 ± 4.0 kg/m(2). No patients or caregivers reported poor sleep quality. Two patients reported symptoms of RLS. Eight patients had an ESS score ≥ 9. Eight patients had high risk of obstructive sleep apnea. At the RBD questionnaire, two patients had a pathological score. HD patients, compared to controls, showed shorter sleep, reduced sleep efficiency index, and increased arousals and awakenings. Four patients presented with sleep disordered breathing (SDB). Periodic limb movements (PLMs) during wake and sleep were observed in all patients. No episode of RBD was observed in the V-PSG recordings, and no patients showed rapid eye movement (REM) sleep without atonia. The disease duration correlated with ESS score (P < 0.02). UHMDRS correlated positively with the ESS score (P < 0.005), and negatively with the percentage of REM sleep. CONCLUSIONS: Patients with Huntington disease showed a severe sleep disruption and a high prevalence of periodic limb movements, but no evidence of sleep disordered breathing or REM sleep behavior disorder.
STUDY OBJECTIVES: To evaluate the sleep pattern and the motor activity during sleep in a cohort of patients affected by Huntington disease (HD). DESIGN: Cross-sectional cohort study. SETTING: Sleep laboratory. PATIENTS: Thirty HDpatients, 16 women and 14 men (mean age 57.3 ± 12.2 y); 30 matched healthy controls (mean age 56.5 ± 11.8 y). INTERVENTIONS: Subjective sleep evaluation: Epworth Sleepiness Scale (ESS); Berlin's Questionnaire, interview for restless legs syndrome (RLS), questionnaire for REM sleep behavior disorder (RBD). Clinical evaluation: disease duration, clinical severity (unified Huntington disease motor rating scale [UHDMRS]), genetic tests. Laboratory-based full-night attended video-polysomnography (V-PSG). MEASUREMENTS AND RESULTS: The duration of the disease was 9.4 ± 4.4 y, UHMDRS score was 55.5 ± 23.4, CAG repeats were 44.3 ± 4.1. Body mass index was 21.9 ± 4.0 kg/m(2). No patients or caregivers reported poor sleep quality. Two patients reported symptoms of RLS. Eight patients had an ESS score ≥ 9. Eight patients had high risk of obstructive sleep apnea. At the RBD questionnaire, two patients had a pathological score. HDpatients, compared to controls, showed shorter sleep, reduced sleep efficiency index, and increased arousals and awakenings. Four patients presented with sleep disordered breathing (SDB). Periodic limb movements (PLMs) during wake and sleep were observed in all patients. No episode of RBD was observed in the V-PSG recordings, and no patients showed rapid eye movement (REM) sleep without atonia. The disease duration correlated with ESS score (P < 0.02). UHMDRS correlated positively with the ESS score (P < 0.005), and negatively with the percentage of REM sleep. CONCLUSIONS:Patients with Huntington disease showed a severe sleep disruption and a high prevalence of periodic limb movements, but no evidence of sleep disordered breathing or REM sleep behavior disorder.
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