The effect of psychoemotional load on ventricular repolarization reflected in integral body surface potential maps

Title:

The effect of psychoemotional load on ventricular repolarization reflected in integral body surface potential maps

Creator:

Kellerová, E., Regecová, V., Katina, S., Titomir, L.I. , Aidu, E.A.I. , Trunov, V.G., and Szathmáry , V.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:2906f2c5-dbfc-4120-bbe1-a53bdcf8511a
uuid:2906f2c5-dbfc-4120-bbe1-a53bdcf8511a

Subject:

Electrocardiology, Depolarization, Repolarization, Body surface potential map, and Mental arithmetic stress test

Type:

article, model:article, and TEXT

Description:

The aim of the present study was to investigate the reflection of psychoemotional stress in the body surface potential distribution as documented by isointegral maps of cardiac activation and recovery. In 72 young men (18.3 ± 7.3 y.) with no cardiovascular history body surface potential maps (BSPMs) at rest and during the test of mental arithmetic were recorded. The digitalized data for each point of the QRS, STT and QRST integral maps, for each subject in both situations, were processed and evaluated by methods of univariate as well as spatial mathematical and statistical modeling. The results showed during MA a significant decrease of repolarization integral values over the sternum and right precordium, which contributed to analogically localized decrements also in the QRST BSM. The decrease occurred in more than 2/3 of lead points. The most pronounced changes were observed in the right precordial area, where potentials decreased in more than in 70 % of subjects. In conclusion, the discriminative power of the difference STT and QRST integral maps was strong enough to distinguish the mental arithmetic induced changes in the superficial cardiac electric field. These adrenergic transient alterations in ventricular recovery may be of importance in subjects at risk for ventricular arrhythmias.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2006 Volume:55 | Number:Suppl 1

Harvested from:

CDK

Metadata only:

false