[Late ventricular potentials in patients with cardiological X syndrome and their association with ventricular arrhythmias].
The purpose of the study was to explore late ventricular potentials (LVPs) in patients with cardiological X syndrome (XS), their association with ventricular arrhythmias (VA), with the structure and function of the heart. Fifty-two patients were examined. A control group comprised 17 healthy individuals. LVPs were determined by recording a signal-averaged high resolution (AHR) ECG by means a Megacart-400 device ("Siemens"). It was shown that there was a relationship between LVPs and high-grade VA in patients with XS. The patients with the recorded LVPs were observed to have the enlarged left ventricle (LV) and a significant ST-segment depression during bicycle ergometric tests. Those with LVPs were ascertained to have a relationship between the end LV systolic volume and the values of a single of AHR ECG. At the same time, there was no correlation between the values of a single of AHR ECG and the magnitude of ST-segment depression.
Kostin
V I
VI
Makarov
S A
SA
D016757:Death, Sudden, Cardiac; D005080:Exercise Test; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008133:Long QT Syndrome / Q000175:diagnosis* / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D015646:Ventriculography, First-Pass / Q000295:instrumentation