Title: 928-77 Right and Left Precordial QRS Duration Ratio in Arrhythmogenic Right Ventricular Dysplasia
Abstract: Prolongation of QRS duration in V2 of 110 msec or more seems to be a specific diagnostic parameter in arrhythmogenic right ventricular dysplasia (ARVD) with a sensitivity of 75%. In orderto define a more common criterium with higher sensitivity QRS duration in a best available limb lead and in all precordial leads were analysed in 41 pts. with ARVD fulfilling major and minor diagnostic criteria and in 24 pts. with idiopathic right ventricular arrhythmia. Localised right precordial prolongation of QRS duration could be achieved in 38 pts (93%) with a QRS duration ratio in V2/N4 and a ratio of the sum of right (Vl-3) and left precordial (V4-6) QRS duration of > 1.1; on the contrary, in all pts. with idiopathic right ventricular arrhythmia these ratios were < 1.1 and not more than 1 in most cases. QRS duration in V2 was 110 msec or more in 29 pts (76%) and 100–<11 0 msec in 9 pts. T wave inversions in VI–V3 could be found in 7 pts (18%) and in V1->V3 in 18 pts (47%) in ARVD and in V4–V6 in 3 pts with idiopathic right ventricular arrhythmia. Localised right precordial ORS prolongation is the ECG criterium of highest sensitivity (93%) and outstanding specifity (1 00%) in ARVD in a definition using QRS duration ratios of right and left precordial leads. With this criterium which cannot be found in idiopathic right ventricular arrhythmia conventional ECG contributes significantly in the clinical definition of ARVD.
Publication Year: 1995
Publication Date: 1995-02-01
Language: en
Type: article
Indexed In: ['crossref']
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