Unlabelled: Plastic surgeons are frequently consulted to perform temporal artery biopsy (TAB), even though patients meet the American College of Rheumatology diagnostic criteria for giant cell arteritis (GCA) and are already treated. This study aimed to analyze the impact of TAB on steroid duration in patients undergoing TAB.
Methods: We undertook a prospective study of adult patients undergoing TAB for GCA in Calgary. Consecutive, multicenter recruitment was performed over 2 years. Primary outcomes included initiation or discontinuation and duration of corticosteroids.
Results: Twenty-one TABs were performed in 20 patients. Nineteen percent of TABs were positive, and 71.4%, negative. In 9.5% of patients, accidental sampling of a vessel other than the superficial temporal artery occurred. Fifty-two percent of patients received steroids before TAB, of which the mean duration was 8.0 days for TAB+ (postive temporal artery biopsy result) patients and 8.4 days for TAB- (negative temporal artery biopsy result; = 0.22) patients. Before TAB, the American College of Rheumatology score was 2.5 for TAB+ patients and 2.4 for TAB- ( = 0.74). Postbiopsy, the American College of Rheumatology score was 3.5 for TAB+ patients (therefore reaching diagnostic threshold of 3) but remained 2.4 for TAB- ( = 0.02). TAB+ patients were treated for 352.3 days, whereas TAB- patients for 16.7 days ( = 0.29). Complications were more likely with long-term (>6 weeks) steroids ( = 0.17).
Conclusion: In patients with a low suspicion of GCA, a negative TAB helps bolster physician confidence and leads to a shorter steroid duration.
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| http://dx.doi.org/10.1097/GOX.0000000000005035 | DOI Listing |
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