Department of Pharmacy, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands.
Department of Cardiology, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands.
Ann Noninvasive Electrocardiol. 2020 Jan;25(1):e12683. doi: 10.1111/anec.12683. Epub 2019 Jul 26.
To assess the diagnostic accuracy of a single-lead portable ECG device for measuring QTc-intervals in comparison with a standard 12-lead ECG.
Adult patients visiting the cardiology outpatient clinic for a 12-lead recording were also measured with a portable single-lead ECG recorder (HeartcheckTM). QTc-intervals were determined by two cardiologists. Perfect agreement was defined as a limit of ≤10 ms between the two measurement methods.
Hundred one ECGs were recorded. QTc-interval mean differences between the two measurement methods was substantially outside our definition of perfect agreement (-31.9 [SD±41.3] ms).
In conclusion, the Heartcheck single-lead ECG device is not accurate for measuring QTc-intervals.
评估单导联便携式心电图设备与标准 12 导联心电图相比测量 QTc 间期的诊断准确性。
在心血管门诊就诊的接受 12 导联记录的成年患者也使用便携式单导联心电图记录仪（HeartcheckTM）进行测量。由两名心脏病专家确定 QTc 间期。完全一致定义为两种测量方法之间的差值≤10ms。
共记录了 101 份心电图。两种测量方法之间的 QTc 间期平均差异大大超出了我们对完全一致的定义（-31.9[SD±41.3]ms）。
总之，Heartcheck 单导联心电图设备测量 QTc 间期不准确。
