BIOMAT Database Logo BIOMAT Database Logo

Influence of temperature on the atrioventricular conduction time for spontaneous and imposed rhythms. 1979

T Mazgalev, and V Pavlov

In the present work data are obtained about the changes in the atrioventricular conduction time under the effect of two parameters: temperature and frequency of the sinus node. The experiments are carried out on preparations from the right atrium of rabbit heart. Temperature changes are obtained by regulation of the temperature of the nutrient medium in the 23--36 degrees C range. The excitation frequency of the sinus node was changed by imposition of artificial (external) rhythms. Data are obtained about the presence of frequency- and temperature-dependent components of the atrioventricular (AV) delay. Upon cooling the preparation the influence of the temperature factor is predominant and parallel with this the capacity for assimilating a higher imposed rhythm decreases. Considerations are expressed about the behaviour of the AV-conduction system at different temperatures under conditions of saccadic changes in the imposed rhythm.

UI MeSH Term Description Entries
D011817 Rabbits A burrowing plant-eating mammal with hind limbs that are longer than its fore limbs. It belongs to the family Leporidae of the order Lagomorpha, and in contrast to hares, possesses 22 instead of 24 pairs of chromosomes. Belgian Hare,New Zealand Rabbit,New Zealand Rabbits,New Zealand White Rabbit,Rabbit,Rabbit, Domestic,Chinchilla Rabbits,NZW Rabbits,New Zealand White Rabbits,Oryctolagus cuniculus,Chinchilla Rabbit,Domestic Rabbit,Domestic Rabbits,Hare, Belgian,NZW Rabbit,Rabbit, Chinchilla,Rabbit, NZW,Rabbit, New Zealand,Rabbits, Chinchilla,Rabbits, Domestic,Rabbits, NZW,Rabbits, New Zealand,Zealand Rabbit, New,Zealand Rabbits, New,cuniculus, Oryctolagus
D002036 Bundle of His Small band of specialized CARDIAC MUSCLE fibers that originates in the ATRIOVENTRICULAR NODE and extends into the membranous part of the interventricular septum. The bundle of His, consisting of the left and the right bundle branches, conducts the electrical impulses to the HEART VENTRICLES in generation of MYOCARDIAL CONTRACTION. Atrioventricular Bundle,Anterior Fascicle,Kent-His Bundle,Left Bundle Branch of His,Posterior Fascicle,Right Bundle Branch of His,Atrioventricular Bundles,Bundle, Atrioventricular,Bundle, Kent-His,Bundles, Atrioventricular,Fascicle, Anterior,Fascicle, Posterior,His Bundle,Kent His Bundle
D004558 Electric Stimulation Use of electric potential or currents to elicit biological responses. Stimulation, Electric,Electrical Stimulation,Electric Stimulations,Electrical Stimulations,Stimulation, Electrical,Stimulations, Electric,Stimulations, Electrical
D004594 Electrophysiology The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.
D006325 Heart Atria The chambers of the heart, to which the BLOOD returns from the circulation. Heart Atrium,Left Atrium,Right Atrium,Atria, Heart,Atrium, Heart,Atrium, Left,Atrium, Right
D006329 Heart Conduction System An impulse-conducting system composed of modified cardiac muscle, having the power of spontaneous rhythmicity and conduction more highly developed than the rest of the heart. Conduction System, Heart,Conduction Systems, Heart,Heart Conduction Systems,System, Heart Conduction,Systems, Heart Conduction
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001283 Atrioventricular Node A small nodular mass of specialized muscle fibers located in the interatrial septum near the opening of the coronary sinus. It gives rise to the atrioventricular bundle of the conduction system of the heart. AV Node,A-V Node,Atrio-Ventricular Node,A V Node,A-V Nodes,AV Nodes,Atrio Ventricular Node,Atrio-Ventricular Nodes,Atrioventricular Nodes,Node, A-V,Node, AV,Node, Atrio-Ventricular,Node, Atrioventricular,Nodes, A-V,Nodes, AV,Nodes, Atrio-Ventricular,Nodes, Atrioventricular
D013696 Temperature The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms. Temperatures
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

Related Publications

T Mazgalev, and V Pavlov
Conduction time oscillations precede the spontaneous termination of human atrioventricular reciprocating tachycardia.
April 2000, Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing,
T Mazgalev, and V Pavlov
Dependence of the Atrioventricular Conduction Time on the Conduction through the Atrioventricular Node and His-Purkinje System.
February 2023, Journal of clinical medicine,
T Mazgalev, and V Pavlov
[Extrasinusal atrial rhythms with disorders of atrioventricular conduction & atrloventricular rhythms; clinico-electrocardiographic contribution].
August 1958, Minerva cardioangiologica,
T Mazgalev, and V Pavlov
The influence of the parasympathetic nervous system on atrioventricular conduction.
November 1977, Circulation research,
T Mazgalev, and V Pavlov
Respiratory variation in the atrioventricular conduction time on dogs.
November 1970, Japanese heart journal,
T Mazgalev, and V Pavlov
The influence of temperature on conduction block.
February 1999, Muscle & nerve,
T Mazgalev, and V Pavlov
[Influence of physical exercise on disorders of atrioventricular conduction].
January 1975, Bollettino della Societa italiana di cardiologia,
T Mazgalev, and V Pavlov
Prediction of complex atrioventricular conduction rhythms in humans with use of the atrioventricular nodal recovery curve.
December 1987, Circulation,
T Mazgalev, and V Pavlov
A device for automatic plotting of the atrioventricular conduction time.
December 1971, The Tohoku journal of experimental medicine,
T Mazgalev, and V Pavlov
Atrioventricular conduction time--a heritable trait?
December 1980, Clinical genetics,
Copied contents to your clipboard!