Health, 08.11.2019 08:31, nathangirnet
Apatient suffering from severe chest pain is admitted to the er. after a series of tests, it is found that blood is flowing back into the left atrium as it is pumped into the left ventricle. which valve is responsible for preventing this from happening?
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Apatient suffering from severe chest pain is admitted to the er. after a series of tests, it is foun...
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