[A new method of recording spike potentials of the atria from the body surface].
A new method of recording spike potentials (rapid deflections) of the heart conductive system (sinus node, atrial conductive tracts, His' bundle)from the body surface was developed using differential magnifying 50 to 250 times and yielding frequencies 30-110 Hz with special filters. The curves with differentially amplified spike potentials (DASP) of the heart conductive system were recorded in 249 patients with various cardiac arrhythmias; the control group consisted of 60 healthy persons. By means of synchronous recording of intracardiac ECG and DASP curves on the latter well recognizable points for the determination of the excitation spreading rate in certain areas of the conductive system were distinguished. The recording of DASP-curves allowed the determination of intraatrial conduction disturbances, atrial overloading and distinguishing of retrograde conduction in atria, sinoventricular conduction, ectopic prefibrillatory activity and differentiation of paroxysmal tachycardias. The new method of recording of spike potentials of the atria from the body surface allows the diagnosis of the conduction disturbances and cardiac arrhythmias, including life threatening ones, which were previously determined using exclusively intracardiac ECG. The application of our method enables to increase the possibilities of the investigation of cardiac arrhythmias and conductive disturbances and allows a multiple examination and evaluation of the influence of drugs on the heart conductive system.
D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000503:physiopathology; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000379:methods*; D006325:Heart Atria / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans
Eine neue Registriermethode von Spike-Potentialen der Vorhöfe von der Körperoberfläche.