Accuracy of mobile 6-lead electrocardiogram device for assessment of QT interval: a prospective validation study.
Neth Heart J
; 31(9): 340-347, 2023 Sep.
Article
em En
| MEDLINE
| ID: mdl-36063313
ABSTRACT
INTRODUCTION:
Ambulatory assessment of the heart rate-corrected QT interval (QTc) can be of diagnostic value, for example in patients on QTc-prolonging medication. Repeating sequential 12-lead electrocardiograms (ECGs) to monitor the QTc is cumbersome, but mobile ECG (mECG) devices can potentially solve this problem. As the accuracy of single-lead mECG devices is reportedly variable, a multilead mECG device may be more accurate.METHODS:
This prospective dual-centre study included outpatients visiting our cardiology clinics for any indication. Participants underwent an mECG recording using a smartphone-enabled 6lead mECG device immediately before or immediately after a conventional 12-lead ECG recording. Multiple QTc values in both recordings were manually measured in leads I and II using the tangent method and subsequently compared.RESULTS:
In total, 234 subjects were included (mean⯱ standard deviation (SD) age 57⯱ 17 years; 58% males), of whom 133 (57%) had cardiac disease. QTc measurement in any lead was impossible due to artefacts in 16 mECGs (7%) and no 12-lead ECGs. Mean (± SD) QTc in lead II on the mECG and 12-lead ECG was 401⯱ 30 and 406⯱ 31â¯ms, respectively. Mean (± SD) absolute difference in QTc values between both modalities was 12⯱ 9â¯ms (râ¯= 0.856; pâ¯< 0.001). In 55% of the subjects, the absolute difference between QTc values was <â¯10â¯ms.CONCLUSION:
A 6-lead mECG allows for QTc assessment with good accuracy and can be used safely in ambulatory QTc monitoring. This may improve patient satisfaction and reduce healthcare costs.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Neth Heart J
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Holanda