• Luciana Paula Dardin, Ana Beatriz Andreo Garcia, Fernanda Martins Gazoni, Fania Cristina Dos Santos, MelloMarco Tulio deMT0000-0003-3896-2208Physical Education School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., and TrevisaniVirginia Fernandes MoçaVFM0000-0002-7180-6285Discipline of Emergency Medicine and Evidence-Based Medicine, Universidade Federal de São Paulo, São Paulo, SP, Brazil..
• Discipline of Emergency Medicine and Evidence-Based Medicine, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
• Sao Paulo Med J. 2020 Mar 1; 138 (2): 146151146-151.

BackgroundFatigue is a frequent symptom in patients with primary Sjögren's syndrome (pSS) and can be a cause of or be associated with sleep disorders.ObjectiveTo assess the sleep quality of pSS patients and its relationship with fatigue and disease activity.Design And SettingAnalytical observational study conducted at an exercise psychobiology laboratory.MethodsSleep quality was evaluated using the Pittsburg sleep quality index (PSQI) and actigraphy. Fatigue was evaluated through the Profile of Fatigue and Discomfort - Sicca Symptoms Inventory (PROFAD-SSI-SF) and a visual analogue scale for fatigue (VAS-fatigue). Disease activity was evaluated using a visual analogue scale for pain (VAS-pain), EULAR Sjögren's Syndrome Patient Reported Index (ESSPRI) and Disease Activity Index (ESSDAI). We summarized the data through descriptive statistics.ResultsA total of 50 female patients with pSS, of average age 56.4 years, were included in the study; 80% presented low disease activity. The total PSQI score showed that 74% had poor sleep. The actigraphy showed mean sleep latency of 26.2 minutes and mean nightly awakening of 48.2 minutes (duration of wakings after sleep onset, WASO). There were correlations between PSQI and VAS-pain, VAS-fatigue, PROFAD-SSI and ESSPRI. Actigraphy showed a correlation between the duration of WASO and ESSDAI.ConclusionThe present study provides important information regarding correlations between sleep disorders and disease activity. There is a need for proper control over disease activity and for development of strategies to help patients to sleep better in order to diminish their fatigue.

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