Sleep quality and its associations with disease activity and quality of life in older patients with rheumatoid arthritis.

PURPOSE: Sleep disturbance is among the most important geriatric syndromes, and its evaluation is part of the routine comprehensive geriatric assessment (CGA). Previous studies have demonstrated that older patients with rheumatoid arthritis (RA) have poorer sleep quality than younger control patients. However, there needs to be more data on the sleep quality of older patients with RA with age-matched controls. METHODS: Totally 100 participants, 50 older RA patients classified according to the ACR criteria, and 50 age- and gender-matched control patients without RA were included in the study. All patients underwent CGA, including assessing their functionality, depressive, cognitive, and nutritional status. In addition, sleep quality was assessed by the Pittsburg Sleep Quality Index (PSQI), and RA disease activity by a rheumatologist using the Disease Activity Score 28 (DAS28-CRP), and quality of life with the RA QoL questionnaire (RAQoL). RESULTS: The median age was 70 years (min-max: 65-86), and 62.5% were female. Co-morbidities and comprehensive geriatric assessment parameters were similar between the two groups. Median PSQI global score was higher in patients with RA than controls [9 (min-max: 1-20) vs. 5 (min-max: 1-13), p = 0.029). When the patients were categorized with respect to being 'poor sleepers' (PSQI score > 5), 62% of patients with RA and 38% of controls were poor sleepers (p = 0.016). The patients classified as poor sleepers were more likely to have a diagnosis of RA, higher DAS28-CRP and RAQoL scores, lower grip strength, and be a woman. PSQI global scores were significantly positively correlated with DAS28-CRP scores (r = 0.514, p < 0.001), RAQoL scores (r = 0.689, p < 0.001), number of medications used (r = 0.292, p = 0.003), and YDS scores (r = 0.407, p < 0.001), and significantly negatively correlated with handgrip strength (r = - 0.351, p = 0.001). CONCLUSION: The results suggest that older patients with RA might have poorer sleep quality compared to age- and gender-matched controls. Moreover, sleep quality correlated with RA disease activity and QoL in old age.

Parotid elastography: a potential alternative to replace labial biopsy in classification of patients with primary Sjögren's syndrome?

BACKGROUND: There has been a substantial improvement in classifying patients with primary Sjögren's syndrome (pSS), with the new 2016 ACR/EULAR classification criteria. It was aimed to investigate the potential role of parotid elastography in the classification of patients with pSS, as well as the clinical diagnosis of those who do not otherwise fulfil the criteria. METHOD: This is a cross-sectional analysis of patients with pSS followed up in tertiary out-patient rheumatology clinic. Patients' medical records were retrospectively investigated whether or not clinically diagnosed pSS patients fulfil 2016 ACR/EULAR criteria sets. Elastographic evaluation of parotid and submandibular glands bilaterally was performed when presented for follow-up. Strain ratio, shear wave velocity and Pascal values of the glands were obtained. RESULTS: Clinical data on 179 patients with Sjögren's syndrome were investigated. Ninety-six patients with pSS and 30 gender and age-matched healthy controls were included in the study. Eighty-six percent of the clinically diagnosed patients satisfied the 2016 ACR /EULAR criteria and were considered 'criteria patients', and the remaining were considered 'non-criteria patients'. Both criteria and non-criteria patients had significantly higher parotid strain ratio and submandibular velocity compared with healthy controls (p < 0.001 and p < 0.001 for parotid strain ratio and p < 0.001 and p = 0.016 for submandibular velocity, respectively). Replacing labial gland biopsy findings with parotid strain ratio in the new classification criteria resulted in similar sensitivity and lower specificity, 91.6% and 80%, respectively. CONCLUSION: Parotid shear elastography is an easy and noninvasive method and might be a useful tool for the classification of patients with pSS, especially when labial gland biopsy is not feasible. Key Points • Salivary gland elastography (SGE) is a useful tool for the classification of patients with pSS. • SGE could be performed instead of labial biopsy without changing the diagnostic power of classification criteria.