arteriesatomicatresiabloodbonuscardiacdefectdoublegasesgreathabitsheartheroheroesicuintroductionlesionlesionslowmagazinenurseoutputpapathwaypauseprocedurerenalresidencyseptalseriesshockshuntsinglesyndrometettidbitstransplanttransporttranspositionventriclewellbeingwellnesswethrive