Heart Disease Community
left atrium
About This Community:

This patient support community is for discussions relating to angina, angioplasty, arrhythmia, bypass surgery, cardiomyopathy, coronary artery disease, defibrillator, heart attack, heart disease, mitral valve, pacemaker, PAD, stenosis, and stress tests.

Font Size:
A
A
A
Background:
Blank
Blank
Blank
Blank Blank

left atrium

What is an enlarged left atrium
Tags: atrium
Related Discussions
5 Comments Post a Comment
Blank
Avatar_f_tn
The left atrium is the chamber located above the left ventricle. An enlarged left atrium  can be one of two things: it is most commonly an enlarged chamber, more uncommonly, it can be the walls of the left atrium are enlarged. Either way, you need to know which it is and why you have this diagnoses. If the chamber is enlarged, that means there is a backflow from the left ventricle which is the main pumping chamber of the heart. Have you been diagnosed with Hypertrophic Cardiomyopathy? (HCM)
Blank
367994_tn?1304957193
Frequently, an enlarged left atrium is caused by mitral valve insufficiency (valve between left atrium and left ventricle).  When blood leaks backward into the left atrium, it increases blood volume and pressure there. The increased blood pressure in the left atrium increases blood pressure in the veins leading from the lungs to the heart (pulmonary veins) and causes the left atrium to enlarge to accommodate the extra blood leaking back from the ventricle.

Valve stenosis (narrow opening) also will increase left atrium due to the gradient pressure between the left atrium and left venticle.

When the underlying condition is not successfully treated an extremely enlarged atrium often beats rapidly in an irregular pattern (a disorder called atrial fibrillation), which reduces the heart's pumping efficiency because the fibrillating atrium is quivering rather than pumping. Consequently, blood does not flow through the atrium normally, and blood clots may form inside the chamber. If a clot breaks loose (becoming an embolus), it is pumped out of the heart and may block an artery, possibly causing a stroke or other damage.

Blank
Avatar_f_tn
hi, I was just looking up some info and came across a post you participatied in.  i have the same issue...left atrial enlargement, and i have been diagonosed with HCM.  what does this mean?  I know i have some back flow, but until now it hasn't been an issue.  how concerned should I be?  how is it treated?
Blank
Post a Comment
To
Top Heart Disease Answerers
976897_tn?1379171202
Blank
ed34
watford, United Kingdom
63984_tn?1385441539
Blank
Flycaster305
97303, OR
Avatar_f_tn
Blank
skydnsr
159619_tn?1318997813
Blank
erijon
Salt Lake City, UT
329165_tn?1412685860
Blank
Smiley2000
Australia
Avatar_m_tn
Blank
Occupant
IL
MedHelp Health Answers
Blank
BloodPressure Tracker
Monitor Your Blood Pressure
Start Tracking Now
Blank
HeartRhythm Tracker
Track your Heart Condition
Start Tracking Now
Recent Activity
Avatar_n_tn
Blank
MickDamphousse commented on When Your Cold Is Not...
15 hrs ago
Avatar_m_tn
Blank
Paxiled commented on Important Factors Typ...
22 hrs ago
Avatar_m_tn
Blank
Valkry commented on Important Factors Typ...
Oct 23
Heart Disease Community Resources
RSS Expert Activity
469720_tn?1388149949
Blank
Abdominal Aortic Aneurysm-treatable... Blank
Oct 04 by Lee Kirksey, MDBlank
242532_tn?1269553979
Blank
The 3 Essentials to Ending Emotiona...
Sep 18 by Roger Gould, M.D.Blank
242532_tn?1269553979
Blank
Control Emotional Eating with this ...
Sep 04 by Roger Gould, M.D.Blank
Top Heart Disease Answerers
976897_tn?1379171202
Blank
ed34
watford, United Kingdom
63984_tn?1385441539
Blank
Flycaster305
97303, OR
Avatar_f_tn
Blank
skydnsr
159619_tn?1318997813
Blank
erijon
Salt Lake City, UT
329165_tn?1412685860
Blank
Smiley2000
Australia
Avatar_m_tn
Blank
Occupant
IL