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18. Dilatative hypertrophy of the left ventricle of the heart: Difference between revisions

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(Created page with "'''Organ''': Heart '''Description''': A slice of the heart can be seen. Most notably the left ventricle is severely dilated. Note that the ventricular wall isn’t abnormally thick. '''Diagnosis''': Dilatative hypertrophy of the left ventricle '''Causes''': * Increased preload ** Aortic insufficiency ** Mitral insufficiency '''Theory''': This topic is best understood in tandem with preparation 17. When there is an increased preload, more blood volume will enter t...")
 
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** Aortic insufficiency
** Aortic insufficiency
** Mitral insufficiency
** Mitral insufficiency
 
[[File:Dilative hypertrophic left ventricle prep.jpg|thumb|Dilative hypertrophic left ventricle prep]]'''Theory''':
'''Theory''':


This topic is best understood in tandem with preparation 17.
This topic is best understood in tandem with preparation 17.
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# Increased preload causes dilatative hypertrophy
# Increased preload causes dilatative hypertrophy
# The Laplace law states that increased dilation of the ventricle causes increased strain on the ventricular wall. This increased strain causes a decrease in contractility.
# The Laplace law states that increased dilation of the ventricle causes increased strain on the ventricular wall. This increased strain causes a decrease in contractility.
# The decreased contractility eventually results in the ventricle not being able to compensate for failing heart, causing decompensation.[[File:Dilative hypertrophic left ventricle prep.jpg|center|thumb|Dilative hypertrophic left ventricle prep]]
# The decreased contractility eventually results in the ventricle not being able to compensate for failing heart, causing decompensation.


[[Category:Pathology 1 - Macropreparations]]
[[Category:Pathology 1 - Macropreparations]]