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Analysis of the risk stratification of premature ventricular contraction in predicting paroxysmal ventricular tachycardia |
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Abstract Objective To analyze the value of the risk stratification factors of premature ventricular contraction(PVC) in predicting paroxysmal ventricular tachycardia(PVT). MethodsAccording to the results of 24-hour ambulatory electrocardiography, 60 cases with PVT were enrolled as PVT group and another 60 cases without PVT as the control group. For patients with PVT, their PVC index, PVC vulneralbe index, and the factors in Myerburgs risk stratification of PVC and Schamaroth's risk stratification of PVC were analyzed. As far as the above factors were concerned, the incidence rates of PVT were compared. Between the two groups, the differences of factors in risk stratification of PVC were also made a comparison. ResultsThere was no statistical significance in the differences of PVC index, PVC vulneralbe index, and QRS amplitude and QRS duration in Schamaroth's pathological PVC between the two groups. However, the differences of QRS wave incisure, irregularity and ST-T changes in Schamaroth's pathological PVC, as well as Myerburg's risk stratification of PVC were statistically significant. ConclusionAmong various factors in risk stratification of PVC, Myerburg's PVC(forms) is the most valuable in predicting the occurrence of PVT. The values of PVC index and PVC vulneralbe index in predicting PVT failed to show up.
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