[Changes of A and V waves in transesophageal electrogram].
The transesophageal electrogram is registered in case of complicated setting up by means of surface electrocardiogram the relation of the atrial complex and electric activity. Various biophysical factors, including the electric conduction of the electrode environment in the esophagus, influence the quality or the transesophageal electrogram (amplitude, interval of frequency, phase). The objective of the research is to show the conduction of the electrode environment in the esophagus of the persons under investigation who were asked to swallow some big gulps of drinking water. The analysis of the monopolar and bipolar transesophageal electrogram of thirty volunteers showed a steady statistic growth of the amplitude of a and v waves and the spectral force of the signal. The setoff components of high frequency high frequency reflect the process of the depolarization of the atrium.
Pauliukenas
Linas
L
Kauno medicinos universiteto Fizikos, matematikos ir biofizikos katedra, Mickeviciaus 9, 3000 Kaunas. pauliukenas@vision.kmu.lt
Skucas
Jonas
J
Lukoseviciūte
Aldona
A
D000328:Adult; D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000503:physiopathology; D004326:Drinking / Q000502:physiology; D004553:Electric Conductivity; D004562:Electrocardiography / Q000379:methods*; D004566:Electrodes; D004947:Esophagus / Q000502:physiology; D006801:Humans; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D017202:Myocardial Ischemia / Q000175:diagnosis / Q000503:physiopathology; D012815:Signal Processing, Computer-Assisted