Tetralogy Of Fallot
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Most common cyanotic heart disease present after infancy ASD (thus called pentalogy of Fallot) is also present in 10% Severity of cynaosis depends on degree of R-to-L shunting Which depends on gradient of pulm htn/pulm valve stenosis vs systemic vasc resistance Treat “tet” spells (cyanosis, hypoxemia) with squatting or phenylephrine to increase....
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