Left Atrial Enlargement: Causes & Reasons

Possible Causes for Left Atrial Enlargement

Early echocardiograms only showed left atrial dilation in two patients, while late echocardiograms showed disease progression with left atrial enlargement in all, mild ventricular [pace-cme.org]

Lutembacher Syndrome

Imaging Studies See the list below: Chest radiographs Pulmonary plethora due to left-to-right shunt Mild left atrial enlargement Right ventricular enlargement Pulmonary artery [emedicine.medscape.com]

enlargement, pulmonary artery enlargement, mitral valve calcification (late in life), pulmonary vascular congestion & marked left atrial enlargement. [xpertdox.com]

There was no left atrial hypertrophy. [jpgmonline.com]

Mitral Valve Insufficiency

In acute mitral regurgitation, radiographic signs of left atrial enlargement are often absent 5. [radiopaedia.org]

atrial enlargement convexity or straightening of the left atrial appendage just below the main pulmonary artery (along left heart border) double density sign: the right side [radiopaedia.org]

Electrocardiography shows rhythm and conduction abnormalities, left atrial enlargement and right ventricular hypertrophy if pulmonary hypertension is present. [symptoma.com]

Cardiac Amyloidosis

Risk factors and prognostic role of left atrial enlargement in patients with cardiac light-chain amyloidosis. [scielo.org.ar]

Effect of combined systolic and diastolic functional parameter assessment for differentiation of cardiac amyloidosis from other causes of concentric left ventricular hypertrophy [scielo.org.ar]

Pericardial Disorder

This article is available to subscribers. Subscribe now. Already have an account? Sign in Case Records of the Massachusetts General Hospital Weekly Clinicopathological Exercises Free Preview Archive J. Gordon Scannell, and Thomas H. Aretz This article has no abstract; the first 100 words appear below. Presentation of[…] [nejm.org]

Right Atrial Hypertrophy

But atrial fibrillation can develop in the absence of left atrial enlargement. With persistent atrial fibrillation, however, the atria eventually enlarge. [livestrong.com]

The ECG contour of the normal P-wave, P mitrale (left atrial enlargement) and P pulmonale (right atrial enlargement) Abnormal P-waves: atrial enlargement If an atria becomes [ecgwaves.com]

Left atrial enlargement as seen in lead V1. Left atrial enlargement as seen on a 12 lead ECG Criteria for left atrial voor left atrial enlargement. [en.ecgpedia.org]

Giant Left Atrium

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]

[…] must be careful not to overcall mild left atrial enlargement on CT 8. [radiopaedia.org]

Severe left atrial enlargement associated with mitral valve disease has been known to carry a poor prognosis in patients undergoing mitral valve repair or replacement. [ncbi.nlm.nih.gov]

Biventricular Hypertrophy

Left atrial enlargement as seen in lead V1. Left atrial enlargement as seen on a 12 lead ECG Criteria for left atrial voor left atrial enlargement. [en.ecgpedia.org]

Left Atrial Enlargement : Left atrial enlargement/hypertrophy is often seen as secondary to left ventricular hypertrophy (LVH) in hypertensive heart disease, cardiomyopathy [yourarticlelibrary.com]

[…] leads: AKA the left ventricular ‘strain’ pattern Additional ECG changes seen in LVH Left atrial enlargement. [litfl.com]

Cardiomegaly on Chest X-ray

[…] heart CTR = 68% Left atrial enlargement Hover on/off image to show/hide findings Tap on/off image to show/hide findings Left atrial enlargement This image shows massive cardiomegaly [radiologymasterclass.co.uk]

Left atrial enlargement Hover on/off image to show/hide findings Tap on/off image to show/hide findings Click image to align with top of page Left atrial enlargement The left [radiologymasterclass.co.uk]

These are discussed separately: right atrial enlargement right ventricular enlargement left atrial enlargement left ventricular enlargement other causes of an enlarged cardiac [radiopaedia.org]

Right Ventricular Hypertrophy

[Chapter Menu] Left atrial enlargement: Dilation or hypertrophy of the left atrium may increase the DURATION of the P wave. [madsci.com]

Left atrial enlargement as seen in lead V1. Left atrial enlargement as seen on a 12 lead ECG Criteria for left atrial voor left atrial enlargement. [en.ecgpedia.org]

Left atrial enlargement often occurs in mitral valve disease (either stenosis or insufficiency). [madsci.com]

Cardiac Dilatation

left Atrial enlargement, right Bilat atrial enlargement Bilateral enlargement of atria Cardiomegaly (enlarged heart) Hypertrophy or dilatation of right ventricle Left atrial [icd9data.com]

Common ECG associations with DCM Left atrial enlargement -> may progress to atrial fibrillation. [lifeinthefastlane.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]

Left Atrial Ball Valve Thrombus

[…] in subsequent left atrial enlargement. [wikidoc.org]

atrial thrombus: Until documented resolution Risk factors: Long-term Risk factors: AF, anterior-apical ST-segment elevation myocardial infarction, left atrial enlargement [emedicine.medscape.com]

Atrial fibrillation, left atrial enlargement, and MV stenosis are associated with stasis and thrombus formation. [journals.lww.com]

Left Ventricular Hypertrophy

Enlargement of the left ventricle is commonly associated with left atrial enlargement as well as incomplete LBBB. [meds.queensu.ca]

[…] leads: AKA the left ventricular ‘strain’ pattern Additional ECG changes seen in LVH Left atrial enlargement. [lifeinthefastlane.com]

[…] ventricular strain pattern, or ST-T oriented opposite to QRS direction) Leftward shift in frontal plane QRS axis Evidence for left atrial enlargement (LAE) (lesson 7) ESTES [ecg.utah.edu]

Mitral Valve Stenosis

ECG left atrial enlargement may precipitate atrial fibrillation right ventricular hypertrophy concomitant left atrial enlargement without left ventricular hypertrophy is especially [radiopaedia.org]

[…] features include 2, 4-6 : left atrial enlargement convexity or straightening of the left atrial appendage just below the main pulmonary artery (along left heart border) double [radiopaedia.org]

The left atrium is enlarged, displacing the left atrial appendage outward (red arrow). [learningradiology.com]

Mitral Annulus Calcification

Although such calcification may be unrelated to the terminal lethal mechanism, the association with left atrial enlargement, atrial fibrillation, mitral regurgitation, mitral [ncbi.nlm.nih.gov]

Mitral annulus calcification is usually asymptomatic unless it is severe enough to impair forward blood flow or cause severe mitral regurgitation, leading to left atrial enlargement [symptoma.com]

It is also known that patient with MAC have higher prevalence of left atrial and left ventricular enlargement, hypertrophic cardiomyopathy, atrial fibrillation, aortic valve [ncbi.nlm.nih.gov]

Congenital Mitral Stenosis

ECG: Left atrial enlargement, increased right ventricular forces, and a rightward axis. [bcm.edu]

The left atrium is enlarged, displacing the left atrial appendage outward (red arrow). [learningradiology.com]

Left Ventricular Dilatation

Common ECG associations with DCM Left atrial enlargement -> may progress to atrial fibrillation. [lifeinthefastlane.com]

Papillary Muscle Dysfunction

Chest X Ray Left atrial enlargement may be present Echocardiography and Doppler Ultrasound Two dimensional electrocardiograph may show changes in thickness of papillary muscle [wikidoc.org]

In acute mitral regurgitation, radiographic signs of left atrial enlargement are often absent 5. [radiopaedia.org]

Investigations CXR may show an enlarged left atrium and left ventricle. ECG often shows a broad P wave of left atrial enlargement. [patient.info]

Cardiomegaly

Cor Triatriatum

An echocardiogram (Panel B) showed normal left ventricular function, an enlarged and globally hypokinetic right ventricle, right atrial enlargement, and a membrane in the [nejm.org]

atrial enlargement in the presence of obvious pulmonary hypertension. [ahajournals.org]

An electrocardiogram (Panel A) showed sinus rhythm, right-axis deviation, left atrial enlargement, right ventricular hypertrophy with strain, and an S1Q3T3 pattern (an S wave [nejm.org]

Cardiac Hypertrophy

[…] leads: AKA the left ventricular ‘strain’ pattern Additional ECG changes seen in LVH Left atrial enlargement. [lifeinthefastlane.com]

Atrial Enlargement = 3 points Left Axis Deviation = 2 points QRS duration ≥ 90 ms = 1 point Intrinsicoid deflection in V5 or V6 > 50 ms = 1 point ECG Examples: Left Ventricular [healio.com]

ECG was reproduced from Dr Smith’s ECG blog Related Topics Right ventricular hypertrophy Left atrial enlargement Left bundle branch block References Edhouse J, Thakur RK, [lifeinthefastlane.com]

Atrial Myxoma

They may also develop left atrial enlargement (note the prominent atrial appendage on the chest film) and embolize pieces of the tumor to various organs. [etsu.edu]

[…] evidence of elevated left atrial pressure. [disabled-world.com]

Abnormalities, if present, are non-specific and include: cardiomegaly : left atrial enlargement intracardiac tumoral calcification evidence of mitral valve obstruction evidence [radiopaedia.org]

Diffuse Intraventricular Block

On the ECG there are signs of left ventricular hypertrophy and left atrial enlargement. [en.ecgpedia.org]

Massive left atrial enlargement causes a notch in the P wave and is termed “P-mitrale” A left ventricular aneurysm results in chronic ST elevation in the anterior precordial [healio.com]

[…] block; left or right atrial enlargement; left or right ventricle hypertrophy (LVH or RVH); non-specific ST-T wave changes; prominent U wave; ST elevation; prolonged QTc interval [journals.plos.org]

Mitral Papillary Muscle Rupture

In acute mitral regurgitation, radiographic signs of left atrial enlargement are often absent 5. [radiopaedia.org]

If atrial fibrillation or severe left atrial enlargement is present, treatment with an anticoagulant may be recommended. [hopkinsmedicine.org]

Investigations CXR may show an enlarged left atrium and left ventricle. ECG often shows a broad P wave of left atrial enlargement. [patient.info]

Hypertrophic Cardiomyopathy

The development of atrial fibrillation (AF) or left atrial enlargement carries a significant risk of thromboembolism. [ncbi.nlm.nih.gov]

There is also evidence of left atrial enlargement (“P mitrale”). [lifeinthefastlane.com]

Left ventricular diastolic dysfunction may lead to compensatory left atrial hypertrophy, with signs of left atrial enlargement (“ P mitrale “) on the ECG. [lifeinthefastlane.com]

Papillary Muscle Disorder

Thus, left atrial enlargement can result in mitral regurgitation by affecting the posterior leaflet. [emedicine.medscape.com]

If atrial fibrillation or severe left atrial enlargement is present, treatment with an anticoagulant may be recommended. [hopkinsmedicine.org]

[…] end-diastolic and left atrial pressures with subsequent left atrial chamber enlargement. [annalscts.com]

Left-to-Right Cardiac Shunt

Furthermore, the increased pulmonary flow leads to left atrial enlargement and increased left ventricular preload and stroke volume by the Frank-Starling mechanism. [cvphysiology.com]

When cardiomegaly is present, the amount of cardiac enlargement is generally proportional to the increase in pulmonary vascularity. 1 Assessing left atrial enlargement is [radiologykey.com]

Arrhythmias (especially atrial fibrillation) may develop, often because of enlargement of the left atrium. [pted.org]

Cyclosporine Toxicity

[…] mild left atrial enlargement. [utmb.influuent.utsystem.edu]

[…] mild left atrial enlargement.", keywords = "Atrial fibrillation, Cyclosporine, Seizure", author = "Pramod Sanghi and Masood Ahmad", year = "2004", month = "1", language = [utmb.influuent.utsystem.edu]

The new onset atrial fibrillation was triggered by high levels of cyclosporine and possibly facilitated by the electrolyte imbalances post seizure and the presence of underlying [utmb.influuent.utsystem.edu]

Premature Atrial Contractions

In patients with underlying predispositions (e.g. left atrial enlargement, ischaemic heart disease, WPW), a PAC may be the trigger for the onset of a re-entrant tachydysrhythmia [litfl.com]

An association between premature atrial complexes and left atrial enlargement was observed, which was stronger when the left atrial size was > 45mm. [journals.plos.org]

As structural cardiac changes were found in these outpatients, such as left atrial enlargement and left ventricular hypertrophy, other causes of pressure overload might be [journals.plos.org]

Mitral Valve Disease

Severe left atrial enlargement associated with mitral valve disease has been known to carry a poor prognosis in patients undergoing mitral valve repair or replacement. [ncbi.nlm.nih.gov]

In patients with chronic MR, chest X-ray findings may include left ventricular and left atrial enlargement, and evidence of heart failure such as pulmonary congestion. [symptoma.com]

Due to the increased volume, left atrial pressure also increases, which leads to compensatory left atrial enlargement and can influence atrial arrhythmias. [healio.com]