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Primary Raynaud’s phenomenon and nailfold videocapillaroscopy: age-related changes in capillary morphology

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Abstract

This study aimed to detect by nailfold videocapillaroscopy (NVC) the presence of age-related capillary morphological patterns in a large cohort of subjects affected by primary Raynaud’s phenomenon (PRP). NVC was performed in 877 patients affected by PRP, divided into three age groups: <35, 35–55 and >55 years. The following qualitative parameters were assessed and compared in the three groups of patients: apical dilations, irregular (non-homogeneous) dilations, venous branch dilations, microhaemorrhages, tortuosities and subpapillary venous plexus visibility. Patients with either irregular dilations or venous branch dilations were found significantly younger than those without (p < 0.0001). The presence of either irregular or venous branch dilations seems to exclude the presence of apical dilations. Patients with microhaemorrhages were found significantly younger than those without (p = 0.05), and 81 % of patients without microhaemorrhages did not show irregular and venous branch dilations. The subpapillary venous plexus seems more visible in subjects with age < 35, as well as in those with age > 55 years (p < 0.0001). A statistically significant negative correlation was found between presence of apical and irregular dilations (p < 0.0001), apical dilations and venous branch dilations (p = 0.02), apical dilations and tortuosities (p = 0.0005), microhaemorrhages and tortuosities (p < 0.0001) and venous branch dilations and tortuosities (p = 0.02). Finally, a statistically significant positive correlation was found between irregular and venous branch dilations (p < 0.0001), irregular dilations and microhaemorrhages (p < 0.0001) and venous branch dilations and microhaemorrhages (p < 0.0001). In conclusion, our study detected different age-related morphological capillary changes mainly in younger patients with PRP, as well as statistically significant correlations between the presence of different capillary variables.

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Correspondence to Carmen Pizzorni.

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Pizzorni, C., Sulli, A., Smith, V. et al. Primary Raynaud’s phenomenon and nailfold videocapillaroscopy: age-related changes in capillary morphology. Clin Rheumatol 36, 1637–1642 (2017). https://doi.org/10.1007/s10067-016-3442-3

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  • DOI: https://doi.org/10.1007/s10067-016-3442-3

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