Abstract
To evaluate the effects of premature ventricular beats on the impulse conduction of adjacent sinus cycles, we compared the high amplification signal-averaged electrocardiogram parameters of the pre- and post-extrasystolic beats with those of the remaining sinus cycle. According to the duration of filtered QRS (fQRS), to the voltage of root mean square of the terminal 40 ms (RMS 40) and to the duration of low amplitude terminal components of the sinus cycles, ventricular late potentials were detected in nine out of 29 subjects. Patients with an abnormal signal-averaged electrocardiogram exhibited a longer fQRS (146 ± 6 versus 116 ± 2 ms), a reduced RMS40 voltage (18 ± 2 versus 80 ± 10 μV) and a prolonged duration of
Original language | English |
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Pages (from-to) | 481-487 |
Number of pages | 7 |
Journal | European Heart Journal |
Volume | 12 |
Issue number | 4 |
Publication status | Published - 1991 |
Keywords
- post-extracystolic potentation
- premature ventricular beats
- re-entrant mechanisms
- signal averaging
- ventricular late potentials
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine