intern_doc
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1. What determine whether you have cyanotic or not ?
2. Which of the following group of shunt is cardioprotected ?
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| mingle
Forum Senior
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1. whether it has become a cor pulmonale already or not
2. asd or patent ductus is cardioprotective
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| mani
Forum Guru
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pt should be cyanotic from the beginning as there is right to left shunt from the beginning
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| mingle
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sorry my booboo there not cardioprotective but rather preserve o2 conc in the blood. hmmm so what is cardioprotective.....would it be the degree of stenosis of the pul valve since that would directly influence the degree of cyanosis? mani is right though...cyanosis should be right from the beginning...
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| santaclara
Forum Elite
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hmmm right to left shunt is cardioprotective, i think.
thanx
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| intern_doc
Forum Guru
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Mani,
#1
NOT all patient with Tetralogy present with cyanotic, therefore sometimes the congenital is referred to as Acyanotic Tetralogy. Therefore, the factor that determines the degree of cyanotic is Pulmonary stenosis. Since less blood is dump into the pulmonary artery --> less blood into left ventricle---> cyanotic or the other around more blood---> NO cyanotic
As for question #2
PDA and ASD
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| Idiopathic
Forum Guru
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ASD and PDA are necessary for long-term existence, or "cardioprotective", in this case.
The degree of stenosis is the most important factor for predicting cyanosis.
And dont forget our friend Eisenmenger
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| mani
Forum Guru
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i think basically its rt vent hypertrophy and rt vent pressure relative to left vent pressute that determines the direction of shunt and pulm stenosis is the factor that determines the extent of hypertryphy
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