1. Optimizing <scp>ECG</scp> lead selection for detection of prolongation of ventricular repolarization as measured by the Tpeak‐end interval
- Author
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Isabelle Ruedisueli, Joyce Ma, Randy Nguyen, Karishma Lakhani, Jeffrey Gornbein, and Holly R. Middlekauff
- Subjects
Adult ,Cohort Studies ,Electrocardiography ,Young Adult ,Physiology (medical) ,Humans ,General Medicine ,Cardiology and Cardiovascular Medicine - Abstract
The Tpeak-end(Tp-e) has not been compared in all 12 ECG leads in healthy adults to determine if the Tp-e varies across leads. If there is variation, it remains uncertain, which lead(s) are preferred for recording in order to capture the maximal Tp-e value.The purpose of the current study was to determine the optimal leads, if any, to capture the maximal Tp-e interval in healthy young adults.In 88 healthy adults (ages 21-38 years), including derivation (n = 21), validation (n = 20), and smoker/vaper (n = 47) cohorts, the Tp-e was measured using commercial computer software (LabChart Pro 8 with ECG module, ADInstruments) in all 12 leads at rest and following a provocative maneuver, abrupt standing. Tp-e was compared to determine which lead(s) most frequently captured the maximal Tp-e interval.In the rest and abrupt standing positions, the Tp-e was not uniform among the 12 leads; the maximal Tp-e was most frequently captured in the precordial leads. At rest, grouping leads V2-V4 resulted in detection of the maximum Tp-e in 85.7% of participants (CI 70.7, 99.9%) versus all other leads (p .001). Upon abrupt standing, grouping leads V2-V6 together, resulted in detection of the maximum Tp-e 85.0% of participants (CI 69.4, 99.9% versus all other leads; p .001). These findings were confirmed in the validation cohort, and extended to the smoking/vaping cohort.If only a subset of ECG leads will be recorded or analyzed for the Tp-e interval, selection of the precordial leads is preferred since these leads are most likely to capture the maximal Tp-e value.
- Published
- 2022
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