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室上性心动过速相关的X线影像和解剖D8
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Figure1.22and1.23showtheRAOandLAOprojections,respectively,withcathetersplacedduringablationforsupraventriculartachycardia.TheRAOviewshowsthatbothcathetersarelocatedintheventricle.Wherearethesecatheterslocatedandwhyhavetheybeenplacedinthispositionforventricularpacing?Thecatheterindicatedbythewhitearrowisplacedintheposteroseptalrightventriclefairyclosetothebase.ExaminingeithertheRAOorLAOviews(closertothediaphragm)confirmsitsposteriorposition.TheLAOviewshowsitsrelativelyseptalpositionanditsfairlybasalorientationcanbeseenby
