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*  Dextro-Transposition of the great arteries
An atrial septectomy is the surgical removal of the atrial septum; this is performed when a patent foramen ovale ( PFO ), or ... or atrial septal defect ( ASD ) and inflated to enlarge the opening in the atrial septum; this creates a shunt which allows a ... The foramen ovale is a hole in the atrial septum which allows blood from the right atrium to flow into the left atrium; after ... Differences in the shape of the atrial septum and/or ventricular outflow tracts affect the relative positions of the aorta and ...
*  Transesophageal echocardiogram
... atrial septum, left atrial appendage, and coronary arteries. TEE has a very high sensitivity for locating a blood clot inside ...
*  Ectopic pacemaker
An ectopic pacemaker located in the atria is known as an atrial pacemaker and can cause the atrial contraction to be faster. An ... ectopic pacemaker situated near the AV node and the septum is known as a junctional pacemaker. The pacemaker that is operating ... "Disturbances in Atrial Rhythm and Conduction Following the Surgical Creation of an Atrial Septal Defect by the Blalock-Hanlon ... During atrial ectopic activity where the P wave is normally rounded can be inverted or peaked. However the QRS complex and T ...
*  Atrium (heart)
Left atrial appendage occlusion is an experimental treatment to prevent stroke in atrial fibrillation. The left atrial ... The interatrial septum separates the right atrium from the left atrium and this is marked by a depression in the right atrium - ... 1) There are no atrial inlet valves to interrupt blood flow during atrial systole. (2) The atrial systole contractions are ... Wolff-Parkinson-White syndrome Atrial flutter Atrial tachycardia Sinus tachycardia Multifocal atrial tachycardia - several ...
*  Cardiac myxoma
Echocardiogram of atrial myxoma Play media Echocardiogram showing atrial myxoma Echocardiogram showing atrial myxoma Atrial ... most commonly found within the left and then the right atria on the interatrial septum. Symptoms may occur at any time, but ... Atrial myxoma. H&E stain. Atrial myxoma. H&E stain. Atrial myxoma covered by endothelium. H&E stain. The tumor must be ... Right atrial myxomas are sometimes associated with tricuspid stenosis and atrial fibrillation. Myxomas are more common in women ...
*  Cardiac physiology
As the atrial muscles contract from the superior portion of the atria toward the atrioventricular septum, pressure rises within ... Atrial contraction, also referred to as the "atrial kick," contributes the remaining 20-30 percent of filling. Atrial systole ... At the end of atrial systole and just prior to atrial contraction, the ventricles contain approximately 130 mL blood in a ... located in the inferior portion of the right atrium within the atrioventricular septum. The septum prevents the impulse from ...
*  Bulbus cordis
By the upgrowth of the ventricular septum the bulbus cordis is in great measure separated from the left ventricle, but remains ... while the junction of the bulbus with the truncus arteriosus is brought directly ventral to and applied to the atrial canal. ...
*  Cardiac contractility modulation
In atrial fibrillation, electrical activity in the atrium is severely disturbed and is therefore not a reliable basis for the ... The ventricular leads are positioned in the upper and middle region of the septum that separates the right ventricle from the ... The lead in the right atrium detects atrial electric signals and transmits them to the pulse generator. The IPG processes the ... This also applies to other diseases involving severe disturbance in electrical atrial sensing. Requests have been raised in ...
*  Heart
The interventricular septum is much thicker than the interatrial septum, since the ventricles need to generate greater pressure ... However, as the atrial baroreceptors increase their rate of firing and as they stretch due to the increased blood pressure, the ... The interatrial septum separates the atria and the interventricular septum separates the ventricles. ... The septum is part of the cardiac skeleton, tissue within the heart that the electrical signal cannot pass through, which ...
*  Systole
As both atrial chambers contract-from the superior region of the atria toward the atrioventricular septum-pressure rises within ... Atrial systole lasts approximately 100 ms and ends prior to ventricular systole, as the atrial muscle returns to diastole. The ... Atrial fibrillation represents a common electrical malady in the heart that appears during the time interval of atrial systole ... Atrial contraction, also referred to as the "atrial kick," contributes the remaining 20 - 30 percent of ventricular filling. ...
*  Endocardial cushions
These thickenings will go on to fuse and remodel to eventually form the valves and septa of the mature adult heart. Endocardial ... Upon sectioning of the heart the atrioventricular endocardial cushions can be observed in the lumen of the atrial canal as two ... refer to a subset of cells in the development of the heart that play a vital role in the proper formation of the heart septa. ... cushions are a subset of cells found in the developing heart tube that will give rise to the heart's valves and septa critical ...
*  Collagen
The cardiac skeleton also includes the separating septa of the heart chambers - the interventricular septum and the ... With support from collagen, atrial fibrillation should never deteriorate to ventricular fibrillation. Collagen is layered in ... atrioventricular septum. Collagen contribution to the measure of cardiac performance summarily represents a continuous ...
*  Electrical conduction system of the heart
The delay in the AV node forms much of the PR segment on the ECG, and part of atrial repolarization can be represented by PR ... The bundle of His splits into two branches in the interventricular septum: the left bundle branch and the right bundle branch. ... Atrial repolarization occurs and is masked during the QRS complex by ventricular depolarization on the ECG. The last event of ... Substantial atrial to ventricular delay. This will allow the atria to completely empty their contents into the ventricles; ...
*  List of dog diseases
Atrial septal defect* is a hole in the division between the heart atria (upper chambers of the heart). It is an uncommon ... Ventricular septal defect* is a hole in the division between the heart ventricles (interventricular septum). It is a congenital ... Atrial fibrillation is common in giant breed dogs with DCM. Doberman Pinschers more commonly have ventricular arrhythmias (e.g ... Rare causes include trauma, clotting disorders, and left atrial rupture. Serous accumulation is rare and caused by heart ...
*  ACTC1
Experiments in chick embryos found an association between ACTC1 knockdown and a reduction in the artrial septa. Polymorphisms ... Another mutation has in the ACTC1 gene has been associated with atrial septal defects. GRCh38: Ensembl release 89: ... "Alpha-cardiac actin mutations produce atrial septal defects". Human Molecular Genetics. 17 (2): 256-65. doi:10.1093/hmg/ddm302 ...
*  Cor triatriatum
The natural history of this defect depends on the size of the communicating orifice between the upper and lower atrial chambers ... Congenital malformation of heart: abnormal septum in left auricle. Trans Path Soz. 1868;19:188-190. Griffith TW. Note on a ... Understanding the nature of congenital division of the atrial chambers. Br Heart J. Jul 1992;68(1):1-3. [Medline]. Richardson ... Transoesophageal echocardiographic evaluation of atrial morphology in children with congenital heart disease. Eur Heart J. Feb ...
*  Bachmann's bundle
Atrial automaticity foci are within the atrial conduction system. The concentration of converging conduction tracts near the ... Apart from Bachmann's bundle these are the anterior interatrial septum, posterior interatrial septum, and the coronary sinus. ... It is therefore considered to be part of the "atrial conduction system" of the heart. In 1916, Jean George Bachmann conducted ... the other three conduction tracts that constitute the atrial conduction system are known as the anterior, middle, and posterior ...
*  Artificial cardiac pacemaker
... as in atrial fibrillation. The equivalent atrial pacing mode is AAI or AAIR which is the mode of choice when atrioventricular ... one passing through the vena cava and the right atrium into the right ventricle to stimulate the septum, and another passing ... Often, for patients in normal sinus rhythm, there is also a lead in the right atrium to facilitate synchrony with the atrial ... The more complex forms include the ability to sense and/or stimulate both the atrial and ventricular chambers. From this the ...
*  Common ostrich
Pulmonary veins attach to the left atrium separately, and also the opening to the pulmonary veins are separated by a septum. ... It is located in the endocardium of the atrial surface of the right atrioventricular valve. It is not covered by connective ... The AV node connects the atrial and ventricular chambers. It functions to carry the electrical impulse from the atria to the ... The atria, ventricles, and septum are supplied of blood by this modality. The deep branches of the coronary arteries found ...
*  Atrioventricular node
... such as atrial fibrillation or atrial flutter. The AV node's normal intrinsic firing rate without stimulation (such as that ... The AV node is quite compact (~1 x 3 x 5 mm). The AV node lies at the lower back section of the interatrial septum near the ... The AV node lies at the lower back section of the interatrial septum near the opening of the coronary sinus, which conducts the ... This is the property of the AV node that prevents rapid conduction to the ventricle in cases of rapid atrial rhythms, ...
*  Sleep apnea
... being male an age above 65 having heart disorders such as atrial fibrillation or atrial septal defects such as PFO stroke High ... or tongue small jaw bone gastroesophageal reflux allergies sinus problems a family history of sleep apnea deviated septum ...
*  Cardiac fibroma
It is most commonly located in the interventricular septum or left ventricular wall. Symptoms depend on the size of the tumor, ... This tumor is rarely seen in atrial locations. Cardiac fibromas are mostly single and well-circumscribed and the average size ... These tumors usually occur within the anterior wall of the left ventricle or the interventricular septum and rarely involves ...
*  Chest pain
cardiac tamponade Arrhythmia - atrial fibrillation and a number of other arrhythmias can cause chest pain. Myocarditis Mitral ... Hypertrophic cardiomyopathy - It is the hypertrophy of interventricular septum that causes outflow obstruction of left ...
*  Cardiology
Atrial fibrillation and atrial flutter resulted in 112,000 deaths in 2013, up from 29,000 in 1990. Sudden cardiac death is the ... Pulmonary atresia with an intact ventricular septum: This type of pulmonary atresia is associated with complete and intact ... Supraventricular tachycardias include atrial fibrillation, atrial flutter, and paroxysmal supraventricular tachycardia. ... Also, a balloon atrial septostomy can be done to fix DORV with the Taussig-Bing anomaly. There are two different types of ...
*  Aortopulmonary septal defect
... atrial septal defect). Complex defects are those that occur with other anatomical anomalies or require non-standard repair. ... separation of the aorticopulmonary trunk that normally occurs in early fetal development with formation of the spiral septum. ...
*  Arrhythmogenic right ventricular dysplasia
Because of this, every attempt is made at placing the defibrillator lead on the ventricular septum. After a successful ... Signs and symptoms of left ventricular failure may become evident, including congestive heart failure, atrial fibrillation, and ... Involvement of the ventricular septum is rare. The areas involved are prone to aneurysm formation. Ventricular arrhythmias due ... The left ventricle and ventricular septum are usually spared. No inflammatory infiltrates are seen in fatty infiltration. There ...
*  Hypoplastic right heart syndrome
... atrial and/or ventricular septal defect, tricuspid atresia, hypoplastic left and right heart. When you have hypoplastic right ... which aid in different heart development features like the valves and septum, and other substances, such as retinoid and folic ...