PMC:6019327 / 254586-256158
Annnotations
{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/6019327","sourcedb":"PMC","sourceid":"6019327","source_url":"https://www.ncbi.nlm.nih.gov/pmc/6019327","text":"PV venography is commonly performed at the time of AF ablation procedures.769,770 The purpose of PV venography is to help guide catheter manipulation, determine the size and location of the PV ostia, and assess PV stenosis, particularly among patients undergoing repeat ablation procedures. Among the writing group members, 25% routinely use PV venography during their AF ablation procedures. There are three techniques that have been described for PV venography. The first technique involves selective delivery of contrast media into each of the PV ostia. This can be accomplished by positioning the transseptal sheath in the region of the right and left PV trunks and injecting contrast, or by selectively engaging each of the four PV ostia using a deflectable catheter or a multipurpose angiography catheter.769 A limitation of the selective PV venography approach is that noncatheterized PVs can be missed if a preac-quired CT or MRI scan is not available to ensure that all the PVs are identified. The second technique is performed by injection of contrast medium into the left and right pulmonary arteries or the pulmonary trunk. The location of the PVs can then be assessed during the venous phase of pulmonary arteriography. The third technique involves the injection of contrast media in the body of the LA or at the roof of the right or left superior PV ostium immediately after delivery of a bolus of adenosine to induce AV block. The contrast media will fill the LA body, the PV antrum, and the proximal part of the PV during the phase of ventricular asystole.","tracks":[{"project":"2_test","denotations":[{"id":"28506916-15028068-29308352","span":{"begin":74,"end":77},"obj":"15028068"},{"id":"28506916-15028068-29308352","span":{"begin":74,"end":77},"obj":"15028068"},{"id":"28506916-16941084-29308353","span":{"begin":78,"end":81},"obj":"16941084"},{"id":"28506916-16941084-29308353","span":{"begin":78,"end":81},"obj":"16941084"},{"id":"28506916-15028068-45816386","span":{"begin":811,"end":814},"obj":"15028068"},{"id":"28506916-15028068-45816386","span":{"begin":811,"end":814},"obj":"15028068"},{"id":"T15310","span":{"begin":74,"end":77},"obj":"15028068"},{"id":"T3945","span":{"begin":74,"end":77},"obj":"15028068"},{"id":"T72673","span":{"begin":78,"end":81},"obj":"16941084"},{"id":"T28807","span":{"begin":78,"end":81},"obj":"16941084"},{"id":"T85244","span":{"begin":811,"end":814},"obj":"15028068"},{"id":"T20009","span":{"begin":811,"end":814},"obj":"15028068"},{"id":"T16606","span":{"begin":74,"end":77},"obj":"15028068"},{"id":"T44546","span":{"begin":74,"end":77},"obj":"15028068"},{"id":"T22635","span":{"begin":78,"end":81},"obj":"16941084"},{"id":"T31271","span":{"begin":78,"end":81},"obj":"16941084"},{"id":"T69289","span":{"begin":811,"end":814},"obj":"15028068"},{"id":"T2159","span":{"begin":811,"end":814},"obj":"15028068"}],"attributes":[{"subj":"28506916-15028068-29308352","pred":"source","obj":"2_test"},{"subj":"28506916-15028068-29308352","pred":"source","obj":"2_test"},{"subj":"28506916-16941084-29308353","pred":"source","obj":"2_test"},{"subj":"28506916-16941084-29308353","pred":"source","obj":"2_test"},{"subj":"28506916-15028068-45816386","pred":"source","obj":"2_test"},{"subj":"28506916-15028068-45816386","pred":"source","obj":"2_test"},{"subj":"T15310","pred":"source","obj":"2_test"},{"subj":"T3945","pred":"source","obj":"2_test"},{"subj":"T72673","pred":"source","obj":"2_test"},{"subj":"T28807","pred":"source","obj":"2_test"},{"subj":"T85244","pred":"source","obj":"2_test"},{"subj":"T20009","pred":"source","obj":"2_test"},{"subj":"T16606","pred":"source","obj":"2_test"},{"subj":"T44546","pred":"source","obj":"2_test"},{"subj":"T22635","pred":"source","obj":"2_test"},{"subj":"T31271","pred":"source","obj":"2_test"},{"subj":"T69289","pred":"source","obj":"2_test"},{"subj":"T2159","pred":"source","obj":"2_test"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"2_test","color":"#a4ec93","default":true}]}]}}