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

Lovely Chhabra | Zendy; V. K. Chaubey | Zendy; Chandrasekhar Kothagundla | Zendy; Bajaj | Zendy; Sudesh Kaul | Zendy; Spodick | Zendy

Open Access

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

Author(s) -

Lovely Chhabra,

V. K. Chaubey,

Chandrasekhar Kothagundla,

Bajaj,

Sudesh Kaul,

Spodick

Publication year - 2013

Publication title -

international journal of copd

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 67

eISSN - 1178-2005

pISSN - 1176-9106

DOI - 10.2147/copd.s45127

Subject(s) - medicine , confounding , cardiology

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.

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