Electrocardiographic correlation of anatomical and haemodynamic data in ostium primum atrial septal defects.
نویسندگان
چکیده
The electrocardiographic characteristics of ostium primum atrial septal defects were first recognized in 1952 (Zuckermann et al., 1952) and have subsequently been well documented (Rogers and Rudolph, 1953; Blount, Balchum, and Gensini, 1956; Toscano-Barbosa, Brandeburg, and Burchell, 1956; Giraud et al., 1957; Pryor, Woodward, and Blount, 1959; Burchell, Du Shane, and Brandeburg, 1960). The salient electrocardiographic features are the association of a right bundle-branch conduction defect with left axis deviation of the mid vector (30-60 msec.; superior to -30° and of counterclockwise inscription in the frontal plane). An altered sequence of ventricular excitation is now the generally accepted cause for the electrocardiographic pattern, though the left ventricular hypertrophy frequently seen in this condition was thought in some early papers to contribute to the left axis deviation (Blount et al., 1956). The anatomical findings of the specialized ventricular conduction system (Morison, 1913; Lev, 1958; Neufeld et al., 1961; Visioli, Baragan, and Lenegre, 1962; Verduyn Lunel, 1964; Feldt, Du Shane, and Titus, 1966), as well as recent electrophysiological data concerning the sequence of epicardial depolarization (Durrer, Roos, and Van Dam, 1966), corroborate the theory of the altered sequence of activation. The QRS complex in ostium primum atrial septal defect lends itself particularly well to trivector analysis. The first vector represents the activation
منابع مشابه
The persistent ostium primum atrial septal defect. (Partial persistent common atrioventricular canal).
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THE 4 forms of interatrial comnmunication -ostium secundum, ostium primum, common atrium, and total anomalous pulmonary venous connection-are associated with clinical symptoms and signs and radiologic, electrocardiographic, anid physiologic features that permit proper differential diagnosis in most instanees. The usual type of atrial septal defect, ostium secundum, is by far the most common for...
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ورودعنوان ژورنال:
- British heart journal
دوره 30 4 شماره
صفحات -
تاریخ انتشار 1968