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- Oct 9, 2016
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Hi everyone,
So I've been studying Congenital Heart Defects and couldn't really grasp a concept about D-Transposition of the Great Arteries. According to Goljan, the simultaneous presence of a ASD steps up the Sa02 in the RA, as there's a LA -> RA shunt, while VSD in this case would cause a RV -> LV shunt, allowing the oxygenation of some of the blood from the right side.
My question is, in order for that shunt to help decrease the cianosis, would both ASD and VSD have to be present? As the RV -> LV shunt would send deoxygenated blood into the lungs, which would then return to the right side to go to the sistemic circulation via the ASV. What happens if only one (ASD/ VSD) is present?
Thanks in advance.
So I've been studying Congenital Heart Defects and couldn't really grasp a concept about D-Transposition of the Great Arteries. According to Goljan, the simultaneous presence of a ASD steps up the Sa02 in the RA, as there's a LA -> RA shunt, while VSD in this case would cause a RV -> LV shunt, allowing the oxygenation of some of the blood from the right side.
My question is, in order for that shunt to help decrease the cianosis, would both ASD and VSD have to be present? As the RV -> LV shunt would send deoxygenated blood into the lungs, which would then return to the right side to go to the sistemic circulation via the ASV. What happens if only one (ASD/ VSD) is present?
Thanks in advance.
