bundle branch


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branch

 [branch]
a division or offshoot from a main stem, especially of blood vessels, nerves, or lymphatics. Called also ramus.
bundle branch a branch of the bundle of His.

bundle branch

/bun·dle branch/ (branch) see under branch.

bundle branch

Etymology: Dan, bondel + Fr, branche
a segment of the network of specialized conducting fibers that transmits electrical impulses within the ventricles of the heart. Bundle branches are a continuation of the atrioventricular (AV) bundle, which extends from the upper part of the intraventricular septum. The AV bundle divides into a left and a right branch, each going to its respective ventricle by passing down the septum and beneath the endocardium. Within the ventricles the bundle branches subdivide and terminate in the Purkinje fibers.

bundle branch

One of the two branches of conducting muscle tissue originating in the BUNDLE OF HIS and running down on each side of the septum between the ventricles near to its surfaces.

branch

1. ramus; a division or offshoot from a main stem, especially of blood vessels, nerves or lymphatics.
2. the bearing surface of the horseshoe that supports the wall of the hoof. There is a lateral and a medial branch.

bundle branch
a branch of the bundle of His.
communicating gray branch
postganglionic nerve fibers coursing between the sympathetic ganglia and the spinal nerves; destined for skin glands, blood vessels and the like; join spinal and cranial nerves.
communicating white branch
preganglionic fibers of the sympathetic system originate in the lateral columns of the spinal cord and pass to the spinal nerves and then, via the communicating white fibers, to the ganglia of the sympathetic trunk.

bundle

a collection of fibers or strands, as of muscle fibers, or a fasciculus or band of nerve fibers.

accessory bundle of Kent
bundle of His.
atrioventricular bundle
bundle of His.
Bachmann bundle
a large muscle bundle between the right and left atria, thought to serve as a specialized conduction pathway.
bundle branch
see bundle branch.
fundamental bundle
that part of the white matter of the spinal cord bordering the gray matter and containing fibers that travel for a distance of only a few segments of the cord. Called also ground bundle.
bundle of His
a band of atypical cardiac muscle connecting the atria with the ventricles of the heart; called also atrioventricular bundle.
His bundle degeneration
associated with sudden unexpected death or periods of viciousness; most common in Doberman and German shepherd dogs.
His bundle stenosis
inherited in Pug dogs; associated with syncope and sudden death.
Keith's bundle
a bundle of fibers in the wall of the atrium of the heart between the venae cavae.
medial forebrain bundle
a group of nerve fibers connecting the midbrain tegmentum and elements of the limbic system.
sinoatrial bundle
Keith's bundle.
Thorel's bundle
a bundle of muscle fibers in the human heart connecting the sinoatrial and atrioventricular nodes.
uncinate bundle
the sharply bent bundle that connects the frontal lobe of the brain with the temporal and occipital lobes.
bundle of Vicq d'Azyr
a band of fibers from the mamillary body to the anterior nucleus of the thalamus.
References in periodicals archive ?
Jain S, Ting HT, Bell M, Bjerke CM, Lennon RJ, Gersh BJ, Rihal CS, Prasad A (2011) Utility of left bundle branch block as a diagnostic criterion for acute myocardial infarction.
However, presence of T-wave negativity and bundle branch block were associated with mortality.
Validation of electrocardiographic criteria for diagnosing acute myocardial infarction in the presence of left bundle branch block.
Incomplete right bundle branch block is a common normal variant found on electrocardiogram and is also another finding that is often associated with an athletic heart and is of no consequence.
The right bundle branch supplies the right side of the septum and the right ventricle.
After placing an electrode catheter near the right bundle branch -- a "well-defined and accessible electrical landmark" -- of anesthetized patients, they administered two electric shocks with the catheter tip serving as the cathode.
Bundle branch block and nonparoxysmal junctional tachycardia (NPJT) were the most common types of arrhythmia postprocedurally, with an incidence rate of 16.
Objective: To determine the role of visual quantification of Tc-99m MIBI myocardial perfusion SPECT in left bundle branch block as compared to coronary angiography findings.
QRSs show right bundle branch block with a QRS duration of 0.
9%) ECG: Electrocardiogram; LBBB: Left bundle branch block; RBBB: Right bundle branch block.
An SVT usually has a QRS duration of <120 ms, unless there is bundle branch block (BBB) or an intraventricular conduction abnormality.
Four patients (67%) presented with a left bundle branch block VT morphology consistent with a right ventricular origin and 3 patients had right bundle branch block morphologies suggestive of LV origin.