IsabellaLinton wrote:
"Persistence of patent foramen ovale (PFO) is present in up to 25% of general population. Under normal circumstances, this is of little relevance as the left atrial pressure is higher than that of the right and the PFO is functionally closed most of the time. However, during coughing, sneezing, diving, and other conditions of increased endothoracic pressure, the PFO can open allowing potential for right-to-left shunt. This opens the cerebral circulation to the systemic venous circulation and has been implicated in the pathogenesis of stroke."
Apparently PFOs really are not uncommon. Recently someone in the Cardiology department that handles my bride and me explained it as the fetal heart has some blood flow shortcuts that close off when you are born...unless it doesn't...and one of those shortcuts is the "
foramen ovale". They were explaining to us what a PFO is—the usual explanation is there is an extra hole in your heart.
I mentioned that in 2019 they informed me I needed some very nontrivial heart surgery but the surgery did not happen until 2020. They later reported that while they were in there they closed a PFO I had...that they had never previously mentioned.
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When diagnosed I bought champagne!
I finally knew why people were strange.