Results: According to the QRS duration, 56 patients had a QRS duration ≤120 ms (Group 1), 33 patients had a QRS duration between 120 and 150 ms (Group 2), and 34 patients had a QRS duration ≥ ...
[37] The mean duration of QRS interval in this trial was 163 ± 22 ms. A total of 41 patients from the PROSPECT trial were enrolled in a 'narrow' QRS substudy with a QRS complex less than 130 ms ...