Anatomy of the normal human atrioventricular conduction system,

Titus, Jack L.; Daugherty, Guy W.; Edwards, Jesse E.

doi:10.1002/aja.1001130305

Cited by 44 publications

(8 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These observations revealed that the anatomical location and appearance of the AVB and its branches in the heart of camels are similar to those of humans (Titus et al, 1963;Titus, 1973), whereas in horses (Bishop and Cole, 1967) and rabbits (James, 1967) the right bundle branch is much smaller than the left one. The AVB in camels was shorter but wider than that in humans, being 4.12 mm long and 3.66 mm wide compared with 6.5-20 mm and 1.5-2 mm, respectively.…”

Section: Discussionmentioning

confidence: 79%

The anatomy of the atrioventricular bundle in the heart of camels (Camelus dromedarius)

Ghazi

Tadjalli

1993

Vet Res Commun

View full text Add to dashboard Cite

The anatomy and histology of the atrioventricular bundle (AVB) was studied in the heart of six camels (Camelus dromedarius). The trunk of the atrioventricular bundle (bundle of His) was a direct continuation of the atrioventricular (AV) node with no sharp line of demarcation between the node and the bundle. The atrioventricular bundle ran through the fibrous trigone and entered the lower part of the interventricular membranous septum, beneath the right endocardium, then lay over or slightly to the side of the centre of the muscular interventricular crest. The AVB of camels measured 4.12 +/- 1.00 mm in length, 3.66 +/- 1.13 mm in width and 1.13 +/- 1.85 mm in thickness, its maximum sectional area being 12.68 +/- 6.13 mm2. Histologically, the AVB in the heart of camels comprised multiple strands of Purkinje cells separated by collagen fibres and surrounded by connective tissue. It resembled that in human beings and dogs except that, in camels, intercalated discs were present at the intercellular connections in the AVB.

show abstract

Section: Discussionmentioning

confidence: 79%

The anatomy of the atrioventricular bundle in the heart of camels (Camelus dromedarius)

Ghazi

Tadjalli

1993

Vet Res Commun

View full text Add to dashboard Cite

show abstract

“…Beyond this the left septal surface was relatively diffusely covered by Purkinje fibers. The LBB-Purkinje network junction is depicted in figures [8][9][10][11][12][13] by the ragged termination of the LBB. Inspection of the left septal surface (either with the naked eye or with a dissecting microscope) was completely unreliable in predicting LBB anatomy.…”

Section: Anatomy Of the Left Bundle Branchmentioning

confidence: 99%

Anatomical configuration of the His bundle and bundle branches in the human heart.

Massing¹,

James²

1976

Circulation

258

110

View full text Add to dashboard Cite

The relationships among the His bundle, the origin of both bundle branches, and the interventricular (IV) septum were examined histologically in 32 human hearts, and the entire bundle branch systems were delineated in 13 of these. The His bundle in five hearts traversed the right IV septal crest, and the LBB origin was a very narrow stem (maximum 1.5 mm in cross-section) crossing from right to left through the inferior margin of the membranous septum. Proximal LBB anatomy was extremely variable, demonstrating multiple fiber groups which fanned out over the entire left septal surface. The LBB did not divide into two discrete divisions without multiple interconnections. The RBB formed an obtuse angle with the His bundle in 27 of 32 hearts. In those five hearts with "right-sided His bundles," the right bundle branch was a direct continuation. The clinical, electrophysiologic, and electrocardiographic implications of these anatomical observations are discussed.

show abstract

“…Observations on the arterial supply to adult nodal tissue in the conducting system of the heart are usually confined to a description of the origin or presence of a nodal artery (Last, 1963;Titus et al, 1963), while in human foetal material Walls (1947j reported that a nodal artery was shown in the sinu-atrial node after 16-5 mm. and that at 25 mm.…”

Section: Discussionmentioning

confidence: 99%

An x-ray microscopic study of the arterial supply to the conducting system of the human heart.

Clarke¹

1965

Heart

View full text Add to dashboard Cite

may be mentioned. More recently Carbonell (1956) isolated the conducting system of the heart by demonstrating the activity of esterases with histochemical techniques, and Lev, Benjamin, and White (1958) reported a histopathological study on the conducting system in a heart with complete block of 42 years' duration. Titus, Neufeld, and Edwards (1964) reported on three cases in which the pulmonary trunk and ascending aorta originated from the right ventricle and showed that the conducting system had been displaced dorsally.Little reference, however, could be found in the reports to the pattern and distribution of arterioles and capillaries in the conducting system of the human heart. Schlesinger (1938) and Fulton (1963) demonstrated the distribution of the coronary arteries in man after the injection of radioopaque media, but the resolution of the x-ray technique did not allow the visualization of capillaries, and no mention is made of any special distribution of vessels to the conducting system. The pattern of blood supply to the sinu-atrial node in the dog has been described as coming from the right coronary artery (Meek, Keenan, and Theisen, 1929;Moore, 1930; Pianetto, 1939;Kazzaz and Shanklin, 1950), and Halpern (1954) described additional branches being distributed to the node from the left coronary artery and right internal mammary artery. In man, Last (1963) states, without further amplification, that the sinu-atrial node is supplied by a branch of the right coronary artery in 60 per cent of cases, and that the atrio-ventricular node and bundle of His are supplied by a branch of the left coronary artery in 90 per cent.This work presents an account of the pre-capillary arteriole and capillary pattern of distribution in the sinu-atrial node and atrio-ventricular conducting system of the human heart, using the Coslett Nixon X-Ray Projection Microscope. This gives an opportunity for investigating unfixed, fullthickness preparations without histological intervention, in contrast to the routine staining, injection, and clearing techniques for examining capillary beds by previous

show abstract

Anatomy of the normal human atrioventricular conduction system,

Cited by 44 publications

References 18 publications

The anatomy of the atrioventricular bundle in the heart of camels (Camelus dromedarius)

The anatomy of the atrioventricular bundle in the heart of camels (Camelus dromedarius)

Anatomical configuration of the His bundle and bundle branches in the human heart.

An x-ray microscopic study of the arterial supply to the conducting system of the human heart.

Contact Info

Product

Resources

About