Systemic sclerosis & Raynaud's

Digital ulcers in systemic sclerosis are strongly associated with digital arterial disease: a finger-by-finger analysis of finger brachial pressure index measurements

Rheumatology (Oxford)Published Cross-sectional study

Authors' conclusion

These results confirm the importance of digital arterial disease in the pathogenesis of DU of SSc, which is independent from the microangiopathy.

Study context

Population
Patients with SSc in five of the nine SCLEROCAP centres; Finger brachial pressure index (FBPI) in the last four fingers of both hands at baseline2,537 fingers
Participants
326 patients
Exposure
Fingers with vs without digital ulcers (DU) or scars
Outcome
Association between FBPI and presence of DU or scars, before and after adjusting for capillaroscopic pattern and systemic factors
Follow-up
Baseline
Methodological detailsmulticentre, observational, finger-by-finger analysis, ancillary to the SCLEROCAP study, same laser-Doppler device in all centres
  • Multicentre
  • Observational
  • Finger-by-finger analysis
  • Ancillary to the SCLEROCAP study
  • Same laser-Doppler device in all centres

Main finding

As reported in the abstract

FBPI lower than 0.70

Fingers with DU or scars

57.5%

FBPI lower than 0.70 in all fingers
26%

Observational data: associations, not effects.

Further findings

Prevalence of active ulcers or scars

Active ulcers or scars in fingers (more often on the right hand, and in the second and third fingers)
10.8%

Original publication

Digital ulcers in systemic sclerosis are strongly associated with digital arterial disease: a finger-by-finger analysis of finger brachial pressure index measurements. Rheumatology (Oxford). Published 1 October 2024. doi:10.1093/rheumatology/keae478

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