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Difference between revisions of "Heart valves"
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m
Ref PBoD
m (→Staining: ref) |
m (Ref PBoD) |
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*Free edge - closest to the centre of the valve/interacts with other valve cusps. | *Free edge - closest to the centre of the valve/interacts with other valve cusps. | ||
Three layers (from proximal (ventricular side) to distal (valsalva side)):<ref>PBoD | Three layers (from proximal (ventricular side) to distal (valsalva side)):<ref name=Ref_PBoD558>{{Ref PBoD|558}}</ref> | ||
#Ventricularis. | #Ventricularis. | ||
#*Elastic tissue. | #*Elastic tissue. | ||
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*Mitral valve is usually normal. | *Mitral valve is usually normal. | ||
=== | ===Microscopic=== | ||
Features:<ref>PBoD | Features:<ref name=Ref_PBoD590>{{Ref PBoD|590}}</ref> | ||
*Affects the valsalva side of the valve. | *Affects the valsalva side of the valve. | ||
**It affects the fibrosa. | **It affects the fibrosa. | ||
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===Gross=== | ===Gross=== | ||
Features:<ref>PBoD | Features:<ref name=Ref_PBoD591>{{Ref PBoD|591}}</ref> | ||
*No commissural fusion. | *No commissural fusion. | ||
**Commissural fusion typical of rheumatic heart disease. | **Commissural fusion typical of rheumatic heart disease. | ||
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===General=== | ===General=== | ||
*Classically leads to mitral valve stenosis. | *Classically leads to mitral valve stenosis. | ||
**Rheumatic fever accounts for 99% of mitral stenosis<ref>PBoD | **Rheumatic fever accounts for 99% of mitral stenosis.<ref name=Ref_PBoD594>{{Ref PBoD|594}}</ref> | ||
*Disease less frequent today - as streptococcal pharynigits is treated. | *Disease less frequent today - as streptococcal pharynigits is treated. | ||
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===Microscopic=== | ===Microscopic=== | ||
Features:<ref>PBoD | Features:<ref name=Ref_PBoD593>{{Ref PBoD|593}}</ref> | ||
*Caterpillar cell (aka Anitschkow cells) | *Caterpillar cell (aka Anitschkow cells) | ||
**Abundant eosinophilic cytoplasm. | **Abundant eosinophilic cytoplasm. | ||