Atrial Dilation: Causes & Reasons

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Possible Causes for Atrial Dilation

Atrial Standstill

This report represents a family with atrial standstill associated with syncope, dilated cardiomyopathy, and sudden cardiac death. [ncbi.nlm.nih.gov]

Acronym ATRST2 Synonyms Atrial dilated cardiomyopathy with atrial standstill Atrial dilation and standstill Keywords Any medical or genetic information present in this entry [uniprot.org]

In the primary persistent form, the atrial paralysis is paralleled by atrial dilation, mitral valve incompetence, and thrombotic complications, with high risk of thromboembolic [ncbi.nlm.nih.gov]

Right Atrial Hypertrophy

Ventricular and Atrial Dilation Chronic ventricular dilation occurs in response to: chronic volume overload stimulated by elevated ventricular end-diastolic pressures (e.g [cvphysiology.com]

Right and Left Atrial Abnormalities (NB: “Atrial abnormality” is a term being used increasingly in place of “ atrial enlargement ”, “ atrial dilatation ” or “ atrial hypertrophy [medicine-on-line.com]

What is the difference between atrial enlargement, atrial dilatation, atrial hypertrophy, intra atrial block and inter atrial block ? [drsvenkatesan.com]

Right Ventricular Dilatation

Ventricular and Atrial Dilation Chronic ventricular dilation occurs in response to: chronic volume overload stimulated by elevated ventricular end-diastolic pressures (e.g [cvphysiology.com]

Predictive Value Of Left Atrial Volume Index And Right Ventricular Dilatation In Mitral Stenosis For Atrial Fibrillation. [scopemed.org]

Thus in the absence of atrial septal defect this anomaly should be considered in case of right heart dilatation in asymptomatic children. [omicsonline.org]

Cardiac Dilatation

Ventricular and Atrial Dilation Chronic ventricular dilation occurs in response to: chronic volume overload stimulated by elevated ventricular end-diastolic pressures (e.g [cvphysiology.com]

Left and right atrial enlargement (hypertrophy/dilatation) [ecgwaves.com]

Both atria were dilated with a left atrial diameter of 45 mm. A moderate tricuspid regurgitation was observed and the pulmonary pressure was slightly increased. [escardio.org]

Left Ventricular Dilatation

Ventricular and Atrial Dilation Chronic ventricular dilation occurs in response to: chronic volume overload stimulated by elevated ventricular end-diastolic pressures (e.g [cvphysiology.com]

Left and right atrial enlargement (hypertrophy/dilatation) [ecgwaves.com]

Follow-up labs revealed a N-terminal pro-B-type natriuretic peptide level of 500 pg/mL, and a repeat 2-dimensional echo revealed mild right atrial dilatation, trace pericardial [thecardiologyadvisor.com]

Uhl Anomaly

Ebstein's anomaly which is often associated with hypoplasia of the myocardium and right atrial dilatation. [fetalultrasound.com]

Electrocardiography showed right atrial dilation and low voltage in all leads. Cardiomegaly was apparent on chest x ray. [heart.bmj.com]

Tricuspid valve is dysplastic or dilated resulting in marked tricuspid regurgitation (and subsequent right atrial enlargement). [fetalultrasound.com]

Left Atrial Ball Valve Thrombus

Transthoracic color-flow Doppler echocardiography revealed an echogenic large(giant) left atrial mass diagnosed as a fresh left atrial mural thrombus in the dilated left atrium [ispub.com]

We experienced a case of free-floating left atrial ball thrombus that developed in a short period in a patient with atrial fibrillation and dilated left atrium but intact [docslide.com.br]

It was presumed that atrial fibrillation and enlarged left atrium were the contributory factors to thrombus development. [scipers.com]

Congenital Mitral Stenosis

Right anterior oblique view confirms extensive left atrial dilation. Mitral valve stenosis. [bcm.edu]

Atrial Fibrillation Chronically increased LAP will eventually result in left atrial dilation which can derange the electrophysiology of the left atrium and cause atrial fibrillation [pathwaymedicine.org]

Methysergide: subendocardial fibrosis Carcinoid heart disease: fibrous deposition in endocardium Sle with apl antibodies: thrombotic state left atrial dilatation :increases [slideshare.net]

Lutembacher Syndrome

Or another mechanism is that mitral stenosis causes left atrial dilatation and dilatation of left atria may widen a small congenital atrial defect and make it significant. [medicotips.com]

Prolonged shunting and severe mitral stenosis (or even insufficiency) can lead to atrial dilation and rhythm abnormalities, such as atrial fibrillation. [symptoma.com]

Echocardiography allows identification of right atrial dilation, presence, size and type of ASD. [cdt.amegroups.com]

Endomyocardial Fibrosis

Endocardial fibrosis is the hallmark of this restrictive cardiomyopathy leading to restriction to diastolic filling of the ventricles with severe atrial dilatation. [ncbi.nlm.nih.gov]

dilation, and regurgitant antrioventricular valves. [secure.ssa.gov]

Echocardiography showed severe left atrial dilation, normal systolic function, and severe dilation of the right chambers. [revespcardiol.org]

Ebstein Malformation

Echocardiography is used to assess right atrial dilatation, anatomical displacement and distortion of the tricuspid-valve leaflets, and the severity of tricuspid regurgitation [ispub.com]

atrialized portion of right ventricle (ARV), small functional portion of right ventricle (RV), leftward bowing of ventricular septum, and marked dilatation of right atrium [pedclerk.bsd.uchicago.edu]

[…] fibrillation, left atrial dilation, or concomitant mitral regurgitation. 100. [slideshare.net]

Biventricular Hypertrophy

Ventricular and Atrial Dilation Chronic ventricular dilation occurs in response to: chronic volume overload stimulated by elevated ventricular end-diastolic pressures (e.g [cvphysiology.com]

left Atrial enlargement, right Bilateral enlargement of atria Cardiomegaly (enlarged heart) Hypertrophy or dilatation of right ventricle Left atrial enlargement Left ventricular [icd10data.com]

As discussed below, distinctive P-wave abnormalities may occur in the absence of atrial hypertrophy or dilation.) [ahajournals.org]

Restrictive Cardiomyopathy

It is often associated with raised left atrial pressure, atrial dilatation and sometimes arrhythmias. [patient.info]

Atrial dilatation develops as a consequence of increased ventricular filling pressures and restrictive physiology. [17] Involvement of the valves may create regurgitant lesions [emedicine.com]

Pathologically, these patients have strikingly dilated atria, which may account for the increased cardiothoracic ratio on chest radiography. [emedicine.com]

Atrioventricular Septal Defect

If the defect is very large, severe atrial dilatation results in atrial flutter of fibrillation in adults. [metealpaslan.com]

Adults also demonstrate a propensity for atrial dysrhythmias, including atrial flutter and fibrillation, presumably caused by chronic right atrial dilation. [emedicine.medscape.com]

Older adults may develop right atrial and ventricular dilatation, congestive heart failure, atrial fibrillation, and rarely pulmonary vascular obstructive disease. [vhlab.umn.edu]

Dilated Cardiomyopathy Type 1R

Gene Condition ABCC9 Atrial fibrillation, familial, 12; Dilated cardiomyopathy 1O ACTC1 Atrial septal defect 5; Cardiomyopathy, dilated, 1R; Cardiomyopathy, hypertrophic, [asperbio.com]

5 Dilated cardiomyopathy 1R Familial hypertrophic cardiomyopathy 11 not provided Variation info Gene ACTC1 LOC101928174 RP11-814P5.1 CLNDBN Atrial septal defect 5 Dilated [snpedia.com]

[…] or tricuspid regurgitation and atrial dilation. [merckmanuals.com]

Ostium Primum Atrial Septal Defect

If the defect is very large, severe atrial dilatation results in atrial flutter of fibrillation in adults. [metealpaslan.com]

Showing of 10 | Percent of people who have these symptoms is not available through HPO Aortic valve stenosis Narrowing of aortic valve 0001650 Atrial septal dilatation 0011995 [rarediseases.info.nih.gov]

Adults also demonstrate a propensity for atrial dysrhythmias, including atrial flutter and fibrillation, presumably caused by chronic right atrial dilation. [emedicine.medscape.com]

Pericardial Anomaly

We are left with two realistic propostions: 1.Right atrial dilatation- difficult to justify in the absence of a valve replacement/repair and possibly SVC dilatation and 2. [radiology.vlahos.org]

There was also thickening of mitral and tricuspid valve and gross atrial dilatation. Dilated inferior vena cava and blunted respiratory changes. Figure 1 (A and B). [escardio.org]

[…] arrangement Leakage of conduit from right atrium to pulmonary artery Left atrial appendage - right - juxtaposition Left atrial appendage aneurysm Left atrial dilatation Left [emedcodes.com]

Giant Left Atrium

Transthoracic color-flow Doppler echocardiography revealed an echogenic large(giant) left atrial mass diagnosed as a fresh left atrial mural thrombus in the dilated left atrium [ispub.com]

Left atrial enlargement (LAE) or left atrial dilation refers to enlargement of the left atrium (LA) of the heart, and is a form of cardiomegaly. [en.wikipedia.org]

The dilated diameter of the left atrium (79 mm) is shown. DISCUSSION Left atrial size is influenced by increased left atrial pressure and its duration. [wjgnet.com]

Tricuspid Valve Insufficiency

Secondary tricuspid regurgitation is due to leaflet tethering, which is the result of reduced leaflet coaptation caused by annular dilation (typical of right atrial dilation [msdmanuals.com]

Early repair of tricuspid valve will prevent right ventricular dysfunction and also reduce right atrial dilatation, thereby maintaining or restoring sinus rhythm. [omicsonline.org]

RV dilation or geometric distortion). [msdmanuals.com]

Rheumatic Valvulitis

1. chronic scarring - functional stenosis, regurgitation, or both 2. pure mitral stenosis - left atrial dilation (pressure overload), atrial fibrillation, atrial thrombus) [quizlet.com]

 Mitral stenosis causes progressive left atrial dilatation, harbouring a mural thrombus in its appendage or along its wall.  Lungs show congestive changes ultimately leading [slideshare.net]

Patients with chronic rheumatic heart disease can develop valve stenosis with varying degrees of regurgitation, atrial dilation, arrhythmias and ventricular dysfunction. [atsu.edu]

Cardiac Hypertrophy

Ventricular and Atrial Dilation Chronic ventricular dilation occurs in response to: chronic volume overload stimulated by elevated ventricular end-diastolic pressures (e.g [cvphysiology.com]

Knockdown of KCNE2 in neonatal rat ventricular myocytes reproduced hypertrophy by increasing the expression of ANP (atrial natriuretic peptide) and β-MHC (β-myosin heavy chain [ncbi.nlm.nih.gov]

[…] phenylephrine-induced cardiomyocyte hypertrophy in neonatal rat ventricular myocytes and in transverse aortic constriction-induced cardiac hypertrophy in mice, as well as in dilated [ncbi.nlm.nih.gov]

Chaotic Atrial Tachycardia

Mechanism Arises due to a combination of factors that are present in hospitalised patients with acute-on-chronic respiratory failure: Right atrial dilatation (from cor pulmonale [litfl.com]

[…] hypercarbia Beta-agonists Theophylline Electrolyte abnormalities: Hypokalaemia and hypomagnesaemia (e.g. secondary to diuretics / beta-agonists) The net result is increased atrial [litfl.com]

Familial Visceral Neuropathy Type 3

There was also reduction in the right ventricular function and bi-atrial dilation. [scielo.br]

Acute Atrial Infarction

Two studies suggested that PR‐segment deviation was caused by other cardiac diseases, including atrial dilatation, atrial hypertrophy, intra‐atrial block, and pericarditis [onlinelibrary.wiley.com]

The usual cardiac pathological causes of secondary Ta segment depression (which may exceed 1 mm [0.1 mV]), include atrial dilation, hypertrophy and intra-atrial block, while [ncbi.nlm.nih.gov]

On the other hand, apart from atrial ischemia, atrial dilatation and hypertrophy can also cause alterations in PWD and PWA, and therefore these changes should be evaluated [onlinelibrary.wiley.com]

Cardiac Atrophy

Ventricular and Atrial Dilation Chronic ventricular dilation occurs in response to: chronic volume overload stimulated by elevated ventricular end-diastolic pressures (e.g [cvphysiology.com]

left Atrial enlargement, right Bilateral enlargement of atria Cardiomegaly (enlarged heart) Hypertrophy or dilatation of right ventricle Left atrial enlargement Left ventricular [icd10data.com]

Related Cardiology Resources on WikiVet Atrial fibrillation Chronic bronchitis Degenerative mitral valve disease Dilated cardiomyopathy (DCM) Dirofilariasis Left-sided congestive [rvc.ac.uk]

Wolcott-Rallison Syndrome

The heart was enlarged with mitral value dysplasia and stenosis, left atrial dilatation, left ventricular hypertrophy, and endocardial fibroelastosis. [ncbi.nlm.nih.gov]

The heart was enlarged with mitral valve dysplasia and stenosis, left atrial dilatation, left ventricular hypertrophy, and endocardial fibroelastosis. [tandfonline.com]

[…] anomalies of the central nervous system anomalies of the cardio-respiratory system pulmonary hypoplasia enlarged heart mitral valve dysplasia mitral valve stenosis left atrial [humpath.com]

Tricuspid Valve Disease

All fetuses had massive right atrial dilation and most who were serially studied had progressive right-sided cardiomegaly. [ncbi.nlm.nih.gov]

Increased left atrial size and pressure might also cause AF, which in turn causes right atrial dilation leading to further tricuspid annular dilation. [onlinejacc.org]

Atrial arrhythmias, particularly atrial fibrillation are common due to the dilatation of the right atrium. How is Tricuspid Valvular Disease Diagnosed? [myvmc.com]

Mitral Valve Insufficiency

A less common mechanism is annular dilatation due to chronic atrial fibrillation with left atrial enlargement. [merckmanuals.com]

With time, patients may feel chest palpitations if atrial fibrillation develops as a result of chronic atrial dilatation. [emedicine.medscape.com]

dilatation (volume index ≥ 60 mL/m2 in sinus rhythm). [merckmanuals.com]

Atrial Myxoma

General symptoms may also be present, such as: Cough Pulmonary edema, as blood backs up into the pulmonary artery, after increased pressures in the left atrium and atrial [en.wikipedia.org]

In the presence of mitral stenosis, atrial fibrillation and dilated left atrium, the appearance of the mass was in keeping with mobile thrombus but possibility of left atrial [alliedacademies.org]

In the presence of mitral stenosis, atrial fibrillation and dilated left atrium, the appearance of the mass was like mobile thrombus but possibility of left atrial myxoma [jcdronline.org]

Atrial Flutter

Atrial dilation is a cause of Atrial Flutter so it is usually seen in patients with congestive heart failure. [mstcparamedic.pbworks.com]

Structural abnormalities are also a strong risk factor, with left atrial dilatation possibly one of the strongest predicting factors for the likely development of atrial flutter [patient.info]

Atrial Flutter Can Also Involve The Left Atrium (9) Most patients have a structural heart disease with marked left atrial dilatation. [fac.org.ar]