Localization of site of traumatic heart block with his bundle recordings

Intra-His bundle block: clinical, electrocardiographic, and electrophysiologic characteristics

“…Myocardial infarction may cause acute intra-His bundle block 15 . Some intra-His bundle block are congenital 16 , and others are caused by penetrating wounds 17 or by surgery 16 . In our case series, 5 patients had hypertensive heart disease, 3 had compensated left ventricular failure, 2 of whom had idiopathic dilated cardiomyopathy and 1 had ischemic heart disease, 1 patient had Sjögren's syndrome, and 7 had no structural heart disease.…”

Traumatic Heart Block

“…The H-V interval was 45 ms. (Fig. 3) and there was not convincing evidence of the presence of a split His potential as described by Rosen et al 9 Their patient's block was caused by a sharp knife wound. At emergency operation, a laceration was found in the outflow tract of the right ventricle, and subsequent cardiac catheterization demonstrated the presence of a ventricular septa} defect with a left-to-right shunt of 1.3:1.…”

Chronic His bundle block. Clinical, electrocardiographic, electrophysiological, and follow-up studies on 16 patients.

“…Although the majority of patients with His bundle block are elderly and have evidence of arteriosclerotic or degenerative heart disease, this type of block has also been seen in patients with congenital AV block, surgically induced AV block, block as a result of trauma to the heart, during acute myocardial infarction, and during cardiac catheterization (Rosen et al, 1970(Rosen et al, , 1971(Rosen et al, , 1972Jacobson and Scheinman, 1974;Nasrallah, Gillette, and Mullins, 1975). In a pathological investigation by Bharati et al (1974), discrete lesions within the His bundle were seen in 2 patients who had shown split His bundle potentials with block during their life.…”

“…Since the initial description of block within the His bundle by Narula and Samet (1970), several electrophysiological and pathological reports have appeared (Rosen et al, 1970(Rosen et al, , 1971(Rosen et al, , 1972(Rosen et al, , 1973Narula et al, 1971;Schuilenburg and Durrer, 1972;Chadda, 1972, 1973;Bharati et al, 1974;Narula and Samet, 1974). However, there are no reports on the natural history or long-term follow-up of patients with chronic His bundle block.…”