atrioventricular


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
Related to atrioventricular: atrioventricular block, atrioventricular bundle, atrioventricular node, atrioventricular canal, atrioventricular dissociation, atrioventricular septum, Atrioventricular valves, Atrioventricular septal defect

atrioventricular

 [a″tre-o-ven-trik´u-ler]
pertaining to or connecting an atrium and ventricle of the heart.

a·tri·o·ven·tric·u·lar (AV),

(ā'trē-ō-ven-trik'yū-lar),
Relating to both the atria and the ventricles of the heart, especially to the ordinary, orthograde transmission of conduction or blood flow.

atrioventricular

/atrio·ven·tric·u·lar/ (-ven-trik´u-ler) pertaining to both an atrium and a ventricle of the heart.

atrioventricular

(ā′trē-ō-vĕn-trĭk′yə-lər)
adj.
Of, relating to, or involving the atria and the ventricles of the heart.

atrioventricular (AV)

[ā′trē·ōventrik′yələr]
Etymology: L, atrium, hall, ventriculus
pertaining to a connecting conduction event or anatomical structure between the atria and ventricles.

atrioventricular

adjective Pertaining to cardiac atrium and a ventricle

a·tri·o·ven·tric·u·lar

, auriculoventricular (AV) (ā'trē-ō-ven-trik'yū-lăr, aw-rikyū-lō-)
Relating to both the atria and the ventricles of the heart, especially to the ordinary, orthograde transmission of conduction or blood flow.

atrioventricular

Pertaining to the association of the upper and lower chambers of the heart—respectively, the atria and the ventricles. It often implies progression from an atrium to a ventricle.

a·tri·o·ven·tric·u·lar

, auriculoventricular(AV) (ā'trē-ō-ven-trik'yū-lăr, aw-rikyū-lō-)
Relating to both the atria and the ventricles of the heart, especially to the ordinary, orthograde transmission of conduction or blood flow.

atrioventricular

pertaining to an atrium and ventricle of the heart.

accessory tract atrioventricular conduction
see accessory tract atrioventricular conduction.
atrioventricular block
see atrioventricular heart block.
atrioventricular bundle
bundle of His.
common atrioventricular canal
a congenital cardiac defect in which both sides of the heart share the same atrioventricular orifice. Called also persistent atrioventricular canal, atrioventricularis communis.
atrioventricular node
a mass of cardiac muscle fibers (Purkinje fibers) lying on the right lower part of the interatrial septum of the heart. Its function is the transmission of the cardiac impulse from the sinoatrial node to the muscular walls of the ventricles. The conductive system is organized so that transmission is slightly delayed at the atrioventricular node, thus allowing time for the atria to empty their contents into the ventricles before the ventricles begin to contract.
partitioning atrioventricular canal
during embryological development partitioning of the cardiac chambers and their orifices may be incomplete, leading to fatal cardiac defects, e.g. persistent atrioventricular chamber.
persistent common atrioventricular canal
atrioventricular stenosis
left and right atrioventricular stenosis are recorded; the former is an acyanotic defect, the latter is more serious and a cyanotic defect.
atrioventricular trunk
see bundle of His.
atrioventricular valvular disease
may be identifiable on finding of systolic murmur (incompetent valve) or diastolic murmur (stenotic valve) over the apex of the heart with maximum audibility over the left or right sides, depending on the side involved.
Wenckebach atrioventricular block
see Mobitz atrioventricular heart block.
References in periodicals archive ?
Atrioventricular dissociation is one effect observed after the administration of potassium chloride as a euthanasia agent in psittacine birds.
Cystic tumor of the atrioventricular node of the heart appears to be the heart equivalent of the solid cell nests (ultimobranchial rests) ofthe thyroid.
After origin, it continued in the left anterior atrioventricular sulcus to reach the obtuse margin of the heart (Fig.
Doxorubicin-induced second degree and complete atrioventricular block.
The sinus node sends an electrical signal throughout the atria (2) and to the atrioventricular (AV) node (3).
Unfortunately, although atrioventricular block decreased to second and then first degree over 2 days, the patient remained poorly responsive for 6 days, suffered transient kidney failure requiring hemodialysis, and had acute respiratory distress syndrome requiring endotracheal ventilation for 12 days.
Congenital complete heart block (CCHB) [2] is the complete electrical dissociation between atrial and ventricular electrical activity due to atrioventricular nodal dysfunction.
Patients for whom this is an appropriate therapy include those with mild symptomatic, moderate or severe heart failure, as well as those with atrioventricular block who are expected to require a high degree of pacing and have a reduced ejection fraction, a measure of pumping function.
Cardiac disorders include bradycardia, sick sinus syndrome, atrioventricular blocks, cardiac arrest, and tachycardia, all of which have increased the demand for pacemakers.
3) Birds have a cardiac conduction system, similar to that of mammals, and consists of a sinoatrial node, an atrioventricular node, and Purkinje fibers.
Transthoracic echocardiography showed massive circumferential pericardial effusion, marked dilatation of coronary sinus and multiple echo-free spaces adjacent to left atrioventricular groove (Fig.

Full browser ?