Electrophysiological mechanisms of the SI SII SIII electrocardiographic morphology

Journal Article · Thu Jan 01 04:00:00 EST 1987 · J. Electrocardiol.; (United States)

DOI:https://doi.org/10.1016/0022-0736(87)90006-9· OSTI ID:6790485

Bayes de Luna, A; Carrio, I; Subirana, M T; Torner, P; Cosin, J; Sagues, F; Guindo, J

We studied three groups of individuals by means of spatial-velocity electrocardiograms and thallium-201 myocardial imaging to figure out the electrophysiological explanation of the SI SII SIII electrocardiographic morphology. We studied twelve healthy individuals without SI SII SIII, seven healthy individuals with SI SII SIII and fifteen patients with chronic obstructive pulmonary disease with SI SII SIII. The average values of the QRS-E and QRS-F intervals were higher in the second and third groups than in the first. One patient of the second group and thirteen of the third showed right ventricular enlargement. The slowing down of the right ventricular conduction explained the SI SII SIII morphology in normal individuals in more than half the cases. In patients with chronic obstructive pulmonary disease with SI SII SIII the conduction delay plays an important part in the electrogenesis of the right ventricular enlargement electrocardiographic morphology. We think that these observations can give further data about the electrophysiologic mechanism of the SI SII SIII morphology.

• Research Organization: Servicio de Cardiologia del Hospital de San Pablo, Barcelona, Spain
• OSTI ID: 6790485
• Journal Information: J. Electrocardiol.; (United States), Journal Name: J. Electrocardiol.; (United States) Vol. 1; ISSN JECAB
• Country of Publication: United States
• Language: English

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62 RADIOLOGY AND NUCLEAR MEDICINE
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