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Nailfold capillaroscopy for day-to-day clinical use: construction of a simple scoring modality as a clinical prognostic index for digital trophic lesions

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Abstract
Objective Construction of a simple nailfold videocapillaroscopic (NVC) scoring modality as a prognostic index for digital trophic lesions for day-to-day clinical use. Methods An association with a single simple (semi)quantitatively scored NVC parameter, mean score of capillary loss, was explored in 71 consecutive patients with systemic sclerosis (SSc), and reliable reduction in the number of investigated fields (F32-F16-F8-F4). The cut-off value of the prognostic index (mean score of capillary loss calculated over a reduced number of fields) for present/future digital trophic lesions was selected by receiver operating curve (ROC) analysis. Results Reduction in the number of fields for mean score of capillary loss was reliable from F32 to F8 (intraclass correlation coefficient of F16/F32: 0.97; F8/F32: 0.90). Based on ROC analysis, a prognostic index (mean score of capillary loss as calculated over F8) with a cut-off value of 1.67 is proposed. This value has a sensitivity of 72.22/70.00, specificity of 70.59/69.77, positive likelihood ratio of 2.46/2.32 and a negative likelihood ratio of 0.39/0.43 for present/future digital trophic lesions. Conclusions A simple prognostic index for digital trophic lesions for daily use in SSc clinics is proposed, limited to the mean score of capillary loss as calculated over eight fields (8 fingers, 1 field per finger).
Keywords
SEVERITY, SYSTEMIC-SCLEROSIS PATIENTS, RAYNAUDS-PHENOMENON, SCLERODERMA, VIDEOCAPILLAROSCOPY ASSESSMENT

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Chicago
Smith, Vanessa, Filip De Keyser, Carmen Pizzorni, Jens Van Praet, Saskia Decuman, Alberto Sulli, Ellen Deschepper, and Maurizio Cutolo. 2011. “Nailfold Capillaroscopy for Day-to-day Clinical Use: Construction of a Simple Scoring Modality as a Clinical Prognostic Index for Digital Trophic Lesions.” Annals of the Rheumatic Diseases 70 (1): 180–183.
APA
Smith, V., De Keyser, F., Pizzorni, C., Van Praet, J., Decuman, S., Sulli, A., Deschepper, E., et al. (2011). Nailfold capillaroscopy for day-to-day clinical use: construction of a simple scoring modality as a clinical prognostic index for digital trophic lesions. ANNALS OF THE RHEUMATIC DISEASES, 70(1), 180–183.
Vancouver
1.
Smith V, De Keyser F, Pizzorni C, Van Praet J, Decuman S, Sulli A, et al. Nailfold capillaroscopy for day-to-day clinical use: construction of a simple scoring modality as a clinical prognostic index for digital trophic lesions. ANNALS OF THE RHEUMATIC DISEASES. 2011;70(1):180–3.
MLA
Smith, Vanessa, Filip De Keyser, Carmen Pizzorni, et al. “Nailfold Capillaroscopy for Day-to-day Clinical Use: Construction of a Simple Scoring Modality as a Clinical Prognostic Index for Digital Trophic Lesions.” ANNALS OF THE RHEUMATIC DISEASES 70.1 (2011): 180–183. Print.
@article{1975106,
  abstract     = {Objective Construction of a simple nailfold videocapillaroscopic (NVC) scoring modality as a prognostic index for digital trophic lesions for day-to-day clinical use. 
Methods An association with a single simple (semi)quantitatively scored NVC parameter, mean score of capillary loss, was explored in 71 consecutive patients with systemic sclerosis (SSc), and reliable reduction in the number of investigated fields (F32-F16-F8-F4). The cut-off value of the prognostic index (mean score of capillary loss calculated over a reduced number of fields) for present/future digital trophic lesions was selected by receiver operating curve (ROC) analysis. 
Results Reduction in the number of fields for mean score of capillary loss was reliable from F32 to F8 (intraclass correlation coefficient of F16/F32: 0.97; F8/F32: 0.90). Based on ROC analysis, a prognostic index (mean score of capillary loss as calculated over F8) with a cut-off value of 1.67 is proposed. This value has a sensitivity of 72.22/70.00, specificity of 70.59/69.77, positive likelihood ratio of 2.46/2.32 and a negative likelihood ratio of 0.39/0.43 for present/future digital trophic lesions. 
Conclusions A simple prognostic index for digital trophic lesions for daily use in SSc clinics is proposed, limited to the mean score of capillary loss as calculated over eight fields (8 fingers, 1 field per finger).},
  author       = {Smith, Vanessa and De Keyser, Filip and Pizzorni, Carmen and Van Praet, Jens and Decuman, Saskia and Sulli, Alberto and Deschepper, Ellen and Cutolo, Maurizio},
  issn         = {0003-4967},
  journal      = {ANNALS OF THE RHEUMATIC DISEASES},
  keyword      = {SEVERITY,SYSTEMIC-SCLEROSIS PATIENTS,RAYNAUDS-PHENOMENON,SCLERODERMA,VIDEOCAPILLAROSCOPY ASSESSMENT},
  language     = {eng},
  number       = {1},
  pages        = {180--183},
  title        = {Nailfold capillaroscopy for day-to-day clinical use: construction of a simple scoring modality as a clinical prognostic index for digital trophic lesions},
  url          = {http://dx.doi.org/10.1136/ard.2010.132431},
  volume       = {70},
  year         = {2011},
}

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