[Echocardiographic study of movements of the interventricular septum in type B Wolff-Parkinson-White syndrome. Description of 2 cases].
In the first case interventricular septum movements in a man of 65 and in one of 24, with type B W.P.W., were recorded echocardiographically. The septum described a typical expulsive "beak" movement followed by a paradoxical anterior movement during ventricular systolic ejection. In the second case, the septum gives rise in the pre-expulsive phase to a marked posterior incisure before going through its normal posterior movement in the systolic phase. Stress is laid on the aspecificity of the series of septal movements in the first case as it is common to other conditions, namely total left branch block, extrasystole originating from the night ventricle and many cases of temporary intracardial electrostimulation with floating catheter in the right ventricle. It is considered however that echocardiographic investigation in type B W.P.W. is useful in any case because, unlike surface ECG which is always the same, it offers information about the extent of the pre-excited zone.
D000368:Aged; D004452:Echocardiography; D006346:Heart Septum / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology*
Contributo allo studio ecocardiografico dei movimenti del setto interventricolare nel W.P.W. di tipo B. Descrizione di due casi.