Vasculitis & polymyalgia rheumatica

A novel ultrasound-based score for assessing carotid artery activity in Takayasu's arteritis

Clin Exp RheumatolPublished Diagnostic accuracy study

Authors' conclusion

Our proposed ultrasound-based score carries the potential in the detection of active disease among TAK patients.

Study context

Population
TAK patients with carotid artery involvement, prospectively followed up for 6 monthstraining n=136, validation n=30
Comparison
Ultrasonographic activity score (ULTRAS) alone or combined with ESR or CRP for active TAK
Outcome
Diagnostic performance of ULTRAS for active disease (AUC)
Methodological detailsprospective, internal validation
  • Prospective
  • Internal validation

Performance

As reported in the abstract

Diagnostic accuracy of ULTRAS for active TAK (training group; optimal cut-off of 7)
Test or modelAUC95% CI
ULTRAS0.8882-94

ULTRAS

AUC0.88
95% CI82-94
ULTRAS combined with ESR, AUC
0.91 (95% CI 86-96)
ULTRAS combined with CRP, AUC
0.90 (95% CI 86-95)

Further findings

OutcomeULTRASESR plus ULTRASCRP plus ULTRAS
Active TAK, validation group
AUC0.880.950.92

Post-treatment follow-up

Thickness (TS), echogenicity scores (ES) and ULTRAS paralleled disease remission and symptom recovery

Wall thickness improvement ≥0.3 mm and symptom recovery · 3 months

Improvement ≥0.3 mm correlated with symptom recovery in proportion of patients
50%

Original publication

A novel ultrasound-based score for assessing carotid artery activity in Takayasu's arteritis. Clin Exp Rheumatol. Published 16 April 2024. doi:10.55563/clinexprheumatol/purgx3

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