P wave duration in the 12 leads of the electrocardiogram and its relationship with interatrial conduction time in patients with paroxysmal supraventricular tachycardias

Authors

  • Raimundo Carmona Puerta
  • Elibet Chávez-González
  • Magda A. Rabassa López-Calleja
  • Elizabeth Lorenzo Martínez
  • Gustavo Padrón Peña
  • Juan M. Cruz Elizundia
  • Fernando Rodríguez González
  • Yasser Beovides Medero
  • Orlando Chaviano Herrera

Abstract

Introduction: Although some studies relate P wave parameters to different atrial conduction times, they do not consider each electrocardiogram lead separately.

Objective: To determine the duration of P wave (Pdur) in the 12 leads of the electrocardiogram and relate it to the interatrial conduction time.

Method: We conducted a cross-sectional study in 153 adult patients with confirmed diagnosis of atrioventricular nodal reentry tachycardia (AVNRT) or accessory pathways by invasive electrophysiological study. 

Results: When comparing the Pdur between arrhythmic substrates by each lead, no significant differences were found, except for V6. In leads II, III, aVR, aVF, V1 and V3-V6, Pdur was correlated with the interatrial conduction time in both arrhythmic substrates. In our multivariate analysis, the Pdur was an independent predictor of interatrial conduction times ≥ 95 percentile in inferior wall leads and in V3, V5 and V6. High values of the area under the receiver operating characteristic curve were observed in II (0.950; p<0.001), III (0.850; p<0.001) and V5 (0.891; p<0.001) leads.

Conclusions: The Pdur showed no difference by leads when comparing cases with AVNRT and accessory pathways, except for V6. Most of the leads were correlated with the interatrial conduction time; Pdur was an independent predictor of interatrial conduction times ≥ 95 percentile. Lead II has the greatest discriminatory ability to find prolonged values of interatrial conduction time.

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Published

2020-07-11

How to Cite

1.
Carmona Puerta R, Chávez-González E, Rabassa López-Calleja MA, Lorenzo Martínez E, Padrón Peña G, Cruz Elizundia JM, et al. P wave duration in the 12 leads of the electrocardiogram and its relationship with interatrial conduction time in patients with paroxysmal supraventricular tachycardias. CorSalud [Internet]. 2020 Jul. 11 [cited 2025 Jun. 21];12(3):247-53. Available from: https://revcorsalud.sld.cu/index.php/cors/article/view/689

Issue

Vol. 12 No. 3 (2020)

Section

ORIGINAL ARTICLES

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