bundle branch


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Related to bundle branch: Left bundle branch block, Right bundle branch block

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 ?
Complete bundle branch block as an independent predictor of all-cause mortality: report of 7,073 patients referred for nuclear exercise testing.
The fQRS on a 12-lead resting ECG was defined by the presence of various RSR' patterns (QRS duration <120 ms) with or without Q wave, which include an additional R wave (R' prime) or notching of the R wave or S wave, or the presence of more than one R prime (fragmentation) (>1 R' or notching of S wave or R wave) without typical bundle branch block in two contiguous leads corresponding to a major lead set for major coronary artery territory (6) (Fig.
The differential diagnosis for ST-SE in the right precordial leads in conditions other than BRS includes anteroseptal myocardial infarction or ischemia, right ventricular ischemia or infarction, early repolarization syndrome, acute pulmonary embolism, dissecting aortic aneurysm, right bundle branch block, left bundle branch block, left ventricular hypertrophy, hyperkalemia, hypercalcemia, arrhythmogenic right ventricular dysplasia/cardiomyopathy, acute myocarditis and pericarditis, tricyclic antidepressants, cocaine intoxication, hypothermia, mediastinal tumors compressing right ventricular outflow tract, right ventricular outflow tract obstruction, various central and autonomic nervous system abnormalities, and Friedreich ataxia.
Patients in Emergency Departments (ED) with suspected myocardial infarction (MI), commonly referred to as a heart attack, frequently have a diffuse 12-lead ECG abnormality known as Left Bundle Branch Block (LBBB).
20 seconds and resembled left bundle branch block, consistent with the device's pacing the right ventricle.
MIs included all new ST-segment elevations, Q-wave events, left bundle branch blocks, and elevations in serum levels of creatine kinase that exceeded three times the upper limit of normal.
His electrocardiogram showed alternating right and left bundle branch blocks without PR or ST interval changes.
Brugada syndrome was first described in 1992 as a new autosomal dominant inherited channelopathy occurring in the structurally normal heart, characterized by ST-segment elevation in the right precordial leads, right bundle branch block, and susceptibility to ventricular tachyarrhythmia's (1).
The initial 12-lead electrocardiogram showed sinus rhythm with 2:1 AV block, right bundle branch block, left anterior fascicular block, and ST-segment depression in precordial leads V1 to V3 (Figure 1).
Food and Drug Administration for the expansion of its CRT-D indication to include high-risk(2) NYHA Class I and II patients with Left Bundle Branch Block.
Men with heart failure and/or bundle branch block appear to be preferentially treated more aggressively with implantable devices than are women with similar health status, a review of nearly 11,000 cases suggests.