P-wave indices in patients with pulmonary emphysema: do P-terminal force and interatrial block have confounding effects?

International Journal of Chronic Obstructive Pulmonary Disease
Lovely ChhabraD H Spodick

Abstract

Pulmonary emphysema causes several electrocardiogram changes, and one of the most common and well known is on the frontal P-wave axis. P-axis verticalization (P-axis > 60°) serves as a quasidiagnostic indicator of emphysema. The correlation of P-axis verticalization with the radiological severity of emphysema and severity of chronic obstructive lung function have been previously investigated and well described in the literature. However, the correlation of P-axis verticalization in emphysema with other P-indices like P-terminal force in V1 (Ptf), amplitude of initial positive component of P-waves in V1 (i-PV1), and interatrial block (IAB) have not been well studied. Our current study was undertaken to investigate the effects of emphysema on these P-wave indices in correlation with the verticalization of the P-vector. Unselected, routinely recorded electrocardiograms of 170 hospitalized emphysema patients were studied. Significant Ptf (s-Ptf) was considered ≥40 mm.ms and was divided into two types based on the morphology of P-waves in V1: either a totally negative (-) P wave in V1 or a biphasic (+/-) P wave in V1. s-Ptf correlated better with vertical P-vectors than nonvertical P-vectors (P = 0.03). s-Ptf also significantly corr...Continue Reading

References

Mar 20, 1999·Clinical Cardiology·R Baljepally, D H Spodick
Aug 15, 2001·Clinical Cardiology·U C Jairath, D H Spodick
Oct 31, 2001·American Heart Journal·S B Goyal, D H Spodick
Sep 11, 2007·The American Journal of Cardiology·Elias GialafosChristodoulos Stefanadis
Feb 11, 2011·The American Journal of Cardiology·Anish J ThomasD H Spodick
Sep 13, 2011·Journal of Electrocardiology·Lovely Chhabra, D H Spodick
Jul 6, 2012·Indian Journal of Gastroenterology : Official Journal of the Indian Society of Gastroenterology·Lovely ChhabraD H Spodick
Aug 28, 2012·Journal of Electrocardiology·Antonio Bayés de LunaD H Spodick
Feb 5, 2013·International Journal of Chronic Obstructive Pulmonary Disease·Rishi BajajD H Spodick

Citations

Dec 3, 2013·International Journal of Chronic Obstructive Pulmonary Disease·Swapnil S LanjewarD H Spodick
Dec 24, 2013·Journal of Electrocardiology·Michelle L SnyderGerardo Heiss
Dec 2, 2015·International Journal of Cardiology·Lovely Chhabra
Sep 24, 2015·International Journal of Cardiology·Goudis A Christos
Aug 25, 2015·International Journal of Cardiology·N Gurukripa Kowlgi, Lovely Chhabra

Related Concepts

Cardiac Arrhythmia
Right Atrial Structure
Cardiac Conduction System
Focal Emphysema
Severity of Illness Index
Polarcardiography
Genetic Vectors
Indicators
Literature
Lung

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