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24 Cards in this Set
- Front
- Back
What type of vsd is this?
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perimembraneous
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What type of vsd is this?
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supracristal
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What type of vsd is this?
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perimembraneous
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Where does a perimembranesous show up on sax view?
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10:00-11:00
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where does supracristal show up on sax view?
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1:00-2:00
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What are the four types of vsd?
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1. outlet (supracristal/infundibular)
2. inlet (subvalvular) 3. muscular (trabecular) 4. membraneous/perimembraneous |
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Which is most common?
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membraneous
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What is the membraneous vsd bordered by?
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av
tv muscle |
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What is muscular bordered by?
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muscle/myocardium
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What is the inlet bordered by?
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mv
tv muscle |
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What is the outlet bordered by?
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av
pv muscle |
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What are symptoms?
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depends on size but usually dyspnea and chf
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What murmur is associated?
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loud holosystolic LSB
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What happens to chambers?
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normal size with small vsd
rv hypertrophy with large dilated la with large |
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What three doppler functions are used in evaluating vsd?
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color to id location
cw to measure pressure diff between ventricles cw to measure vsd velocity |
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What is the vsd velocity measure used for?
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to estimate rvsp
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What other element is required to measure RVSP?
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systolic BP
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What is the formula for calculating RVSP?
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systolic BP minus vsd gradient
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How do you calculate the VSD gradient?
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4v squared
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What would RVSP be in a patient with 5 m/sec VSD jet and BP of 130/80?
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30 mmHg
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What would it be with a VSD jet of 2 m/sec?
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114 mmHg
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Which jet, the 5 m/sec or the 2 m/sec, is more harmful and why?
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The 2 m/sec, because it creates higher pressure which is more damaging to the lungs?
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What happens if the lungs get damaged?
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you might get PHTN, in which case the shunt might reverse, going right to left, which is Eisenmemger
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What would protect the lungs from this happening?
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PS
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