Key result
Decreased magnitude and directional change of the ventricular gradient reflect the severity and location of myocardial damage in single vessel coronary artery disease.
Why the study?
Do vectorcardiographic parameters (Aqrs, At, and G) reflect the severity and location of myocardial damage in single vessel coronary artery disease?
Observational
Do vectorcardiographic parameters (Aqrs, At, and G) reflect the severity and location of myocardial damage in single vessel coronary artery disease?
Vectorcardiographic parameters, specifically the ventricular gradient, can indicate the severity and location of myocardial damage in patients with single vessel coronary artery disease.
May aid noninvasive damage assessment in single-vessel CAD; hypothesis-generating and requires prospective validation.
Deflection area vectors of QRS (Aqrs) and T (At) and ventricular gradient (G) calculated from vectorcardiographic leads were compared in single vessel coronary artery diseases divided into subgroups of normokinetic, hypokinetic and akinetic by left ventriculography. In the LAD group, Aqrs shifted posteriorly, At were smaller and shifted to the right and G were smaller and shifted posteriorly or to the right. In the RCA group, Aqrs were smaller and shifted upwards, At shifted upwards and G were smaller and shifted upwards. In the LCx group, Aqrs shifted upwards, At shifted anteriorly and upwards and G were smaller and shifted upwards. Decreased magnitude and directional change of G reflect the severity and location of myocardial damage.
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Motomura et al. (1989) conducted an observational in Single vessel coronary artery disease. Single vessel coronary artery disease location (LAD, RCA, LCx) vs. Between vessel groups and kinetic subgroups was evaluated on Deflection area vectors of QRS (Aqrs), T (At), and ventricular gradient (G). Decreased magnitude and directional change of the ventricular gradient reflect the severity and location of myocardial damage in single vessel coronary artery disease.
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