RECIPROCAL VENTRICULAR EXTRASYSTOLES

Reciprocal ventricular extrasystoles.

An impulse originating in the A-V node or ventricles may be conducted retrogradely through the A-V node. The retrograde impulse may, under certain circumstances, return anterogradely through the A-V node to the ventricles giving rise to a reciprocal or return extrasystole. One explanation for this re-entry phenomenon is based on the concept of a functional vertical division or longitudinal diss...

Concealed ventricular extrasystoles.

AN apparently haphazard distribution of ventricular extrasystoles may not be so haphazard as it appears and indeed may mask an underlying regularity. We previously reported a case in which careful analysis uncovered a simple but remarkable phenomenon, namely, that the interectopic intervals always contained an odd number of sinus beats.1 This was explicable on the assumption that a bigeminal rh...

The Localization of Ventricular Extrasystoles *

The interest in localization of the site of origin of ventricular extrasystoles by study of their electrocardiographic configuration does not arise from a sense of the importance of such a localization in the case of the majority of ventricular extrasystoles observed in man. It is, rather, founded on the recognition in the earliest days of electrocardiography'5 26, 27, 28 that the electrocardio...

Retrograde conduction of ventricular extrasystoles with consideration of return extrasystoles.

Prognostic significance of right ventricular extrasystoles.

UNLABELLED Extrasystoles (RVES) from the right ventricular outflow tract (RVOT) are a common arrhythmia in routine ECGs. METHODS In this prospective study 56 consecutive patients with RVES (22 males, 34 females) were examined for morphological and/or functional right ventricular (RV) abnormalities by 12-lead, Holter, exercise ECGs, transthoracic echocardiography and signal averaging. The foll...