Mian Owais S, de Souza Russell J, Newman David M, Singh Sheldon M
Schulich Heart Center, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
Temetry Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
CJC Open. 2025 Feb 19;7(5):588-592. doi: 10.1016/j.cjco.2025.02.010. eCollection 2025 May.
The real-world use of head-upright tilt-table tests (HUTTs) in North America is not known. This single-centre retrospective study in Toronto, Ontario, Canada reports on 1063 HUTTs conducted between 2014 and 2024. Use of the HUTT increased year over year, with a greater increase in HUTTs conducted as a result of a referral diagnosis of postural orthostatic tachycardia syndrome (POTS). Using specific diagnostic criteria for syncope and POTS, patients with either diagnosis who underwent testing, after January 2021 had an almost 50% reduction in the odds of a positive HUTT (syncope: odds ratio: 0.54, 95% confidence interval: 0.40-0.73 and postural orthostatic tachycardia syndrome: odds ratio: 0.51, 95% confidence interval: 0.28-0.95).
北美直立倾斜试验（HUTTs）在现实世界中的使用情况尚不清楚。这项在加拿大多伦多安大略省进行的单中心回顾性研究报告了2014年至2024年间进行的1063次直立倾斜试验。直立倾斜试验的使用逐年增加，因体位性直立性心动过速综合征（POTS）转诊诊断而进行的直立倾斜试验增加幅度更大。使用晕厥和POTS的特定诊断标准，2021年1月后接受测试的任何一种诊断患者直立倾斜试验阳性几率降低了近50%（晕厥：优势比：0.54，95%置信区间：0.40-0.73；体位性直立性心动过速综合征：优势比：0.51，95%置信区间：0.28-0.95）。
