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Related Experiment Videos

Office capillaroscopy in systemic sclerosis.

Murray Baron1, Mary Bell, Arthur Bookman

  • 1McGill University, and Jewish General Hospital, Montreal, Quebec, Canada. mbaron@rhu.jgh.mcgill.ca

Clinical Rheumatology
|December 13, 2006
PubMed
Summary
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Ophthalmoscopes and dermascopes show moderate reliability for detecting nailfold capillary abnormalities in systemic sclerosis (SSc). These office tools are useful for identifying dilated and giant capillaries, though less effective for avascular areas.

Area of Science:

  • Rheumatology
  • Dermatology
  • Vascular Biology

Background:

  • Nailfold capillaroscopy is crucial for diagnosing systemic sclerosis (SSc).
  • Assessing capillary abnormalities in SSc patients requires reliable and accessible diagnostic tools.
  • Office-based techniques need validation for detecting microvascular changes in SSc.

Purpose of the Study:

  • To evaluate the reliability of ophthalmoscopy and dermoscopy for detecting nailfold capillaroscopy abnormalities in systemic sclerosis (SSc).
  • To compare the diagnostic accuracy of these office techniques against widefield capillary microscopy.
  • To determine the utility of ophthalmoscopes and dermascopes as clinical tools for SSc assessment.

Main Methods:

  • Two studies were conducted involving rheumatologists examining nailfolds of SSc patients and healthy controls.

Related Experiment Videos

  • Ophthalmoscopy and Dermlite dermoscopy were used to identify dilated loops, giant capillaries, and avascular areas.
  • Kappa coefficients assessed inter-observer and intra-observer reliability; microscopy served as the gold standard for validity.

    • Main Results:

    • Both ophthalmoscopy and dermoscopy demonstrated moderate to substantial reliability for detecting giant and dilated capillaries.
    • Inter-observer agreement for detecting avascular areas was poor with both instruments.
    • Ophthalmoscopy showed good validity compared to microscopy for identifying giant or dilated capillaries.

    Conclusions:

    • Ophthalmoscopes and dermascopes are valuable office-based tools for detecting capillary abnormalities in systemic sclerosis (SSc).
    • These techniques offer reliable detection of key microvascular changes, aiding in SSc diagnosis and monitoring.
    • Further refinement may be needed for consistent identification of avascular areas using these methods.