Figure 1.
Correlations between QRS width and SAI QRST (A), between mean magnitude of spatial QRS vector and SAI QRST (B), between mean magnitude of spatial T vector and SAI QRST (C), and between mean heart rate and SAI QRST (D).
Linear regression fitted line is shown in each graph.
Table 1.
Baseline clinical characteristics of patients with SAI QRST, dichotomized at the 75th percentile (>334 mV*ms).
Table 2.
Outcomes and baseline ECG parameters in patients with SAI QRST, dichotomized at the 75th percentile (>334 mV*ms).
Figure 2.
Correlation between the time after myocardial infarction and SAI QRST. P = 0.003.
Figure 3.
Kaplan-Meier curves for the probability of sudden arrhythmic death, (A) by quartiles of SAI QRST; (B) in patients with the highest SAI QRST quartile and those with the lower 3 SAI QRST quartiles.
Figure 4.
Kaplan-Meier curves for the probability of (A) sudden arrhythmic death, and (B) all-cause mortality in patients with the highest SAI QRST quartile and those with the lower 3 SAI QRST quartiles, by MADIT II study arm (ICD arm and conventional medical therapy arm).
Table 3.
Hazard ratios for MADIT II risk score components for sudden arrhythmic death and all-cause mortality.
Figure 5.
Kaplan-Meier curves for the probability of (A) sudden arrhythmic death, and (B) all-cause mortality in patients with the highest SAI QRST quartile and those with the lower 3 SAI QRST quartiles, by the presence of bundle brunch block.
Table 4.
Multivariate Cox regression models for prediction of sudden arrhythmic death and all-cause mortality with SAI QRST as continuous variable in patients with and without bundle branch block.