Left atrial appendage
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was changed:
The left atrial appendage (LAA) is a pouch-like projection from the main body of the left atrium.
PathologyGross anatomy
EmbryologyMorphological types
Four main morphological types have been described:
- cactus: 30%
- chicken wing: 48%
- windsock: 19%
- cauliflower: 3%.
Development
It is derived from the left wall of the primary atrium, which forms during the fourth week of embryonic development. It has developmental, ultrastructural, and physiological characteristics distinct from the left atrium proper.
Morphological types
Four main morphological types have been described
cactus: 30%chicken wing: 48%windsock: 19%cauliflower: 3%.
Practical pointsRelated pathology
It can be source of source of more than 90% of cardiac-based emboli.
See also
-<p>The<strong> left atrial appendage (LAA)</strong> is a pouch-like projection from the main body of the <a href="/articles/left-atrium-1">left atrium</a>.</p><h4>Pathology</h4><h5>Embryology</h5><p>It is derived from the left wall of the primary atrium, which forms during the fourth week of embryonic development. It has developmental, ultrastructural, and physiological characteristics distinct from the left atrium proper.</p><h5>Morphological types</h5><p>Four main morphological types have been described</p><ul>- +<p>The<strong> left atrial appendage (LAA)</strong> is a pouch-like projection from the main body of the <a href="/articles/left-atrium-1">left atrium</a>.</p><h4>Gross anatomy</h4><h5>Morphological types</h5><p>Four main morphological types have been described:</p><ul>
-</ul><h4>Practical points</h4><p>It can be source of source of more than 90% of cardiac-based emboli.</p><h4>See also </h4><ul><li><a href="/articles/accessory-left-atrial-appendage">accessory left atrial appendage</a></li></ul>- +</ul><h4>Development</h4><p>It is derived from the left wall of the primary atrium, which forms during the fourth week of embryonic development. It has developmental, ultrastructural, and physiological characteristics distinct from the left atrium proper.</p><h4>Related pathology</h4><p>It can be source of source of more than 90% of cardiac-based emboli.</p>
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