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13 Cards in this Set
- Front
- Back
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define valve stenosis
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valves fail to open fully due to flaps becoming rigid, thick, or fused together
-not enough blood flows through heart |
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define valve regurgitation
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valves do not close tightly
-allows for backflow (cannot maintain one-directional flow) |
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what are lifetime conditions that cause heart valve disease (10)
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rheumatic fever
bacterial endocarditis natural aging coronary artery disease heart attack cardiomyopathy syphilis HTN tumors radiation |
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what are the symptoms of heart valve disease (11)
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SOB
wheezing coughing heart palpitations fatigue weakness dizziness swelling of ankles, feet, ab chest pain heart murmurs rapid weight gain |
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describe balloon valvoplasty
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treats heart valve stenosis
-deflated balloon is inserted into heart value; inflated balloon stretches valve open |
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what are the ideal properties for replacement heart valves (9)
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nonthrombogenic
resists infection chemically inert allows healing does not block flow closes promptly/completely easy to implant long lifetime pleasing to patient (no noise) |
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define autograft replacement valve
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taking a valve from patient and replacing a damaged valve with it
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define allograft replacement valve
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valve from human cadaver
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define bioprosthetic replacement valve
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valves from human or animal tissue and sterilized for use
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define mechanical replacement valves
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valves made from synthetic materials
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what are advantages and disadvantages of allograft replacement valve
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A: good blood flow properties, doesn't require blood thinner
D: sensitive to freezing/thawing procedure, cells are non-viable/cannot grow |
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what are advantages and disadvantages of bioprosthetic replacement valve
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A: allows stress transfer, more natural flow, flexible design
D: rough and smooth side |
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what are advantages and disadvantages of mechanical replacement valve
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A: durable, closes quickly
D: blood thinners needed, kills blood cells upon closure, noisy |
