RESUMO
Objective To study the characteristics of vestibular autorotation test (VAT) in patients with the posterior circulation transient ischemic attacks(PCTIA) ,further reveal the pathogenesis vestibular function damage because of PCTIA .Methods VAT was performed on 41 patients with posterior circulation transient ischemic at‐tacks(PCTIA group) and 30 healthy controls(control group) .Parameters analyzed included gains ,phases and a‐symmetry of VAT .The positive result of the test could be defined if any of the paramaeters was abnormal .Results In the PCTIA group and control group ,gains were enhanced without being reduced as showed in 25 (62 .5% ,25/40) cases and 5(16 .7% ) ,respectively (χ2 =7 .09 ,P<0 .01) ,gains were enhanced with reduced as showed in 10(25% ) cases and 0(0% ) ,respectively (χ2 =8 .78 ,P<0 .01) .Conclusion The results of VAT in patients with the PCTIA can show gains enhanced with reduced in different frequency .VAT can provide valuable reference on positioning as‐sessment of vestibular system damage in patients with PCTIA .