Linked Life Data

8447269

Source:http://linkedlifedata.com/resource/pubmed/id/8447269

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
1993-4-8
pubmed:abstractText
Endocardial mapping has suggested that common atrial flutter (AF) is based on right atrial reentry surrounding the inferior vena cava (IVC). The isthmus between the IVC and the tricuspid valve (TV) appears essential to close the circuit. To test this hypothesis, radiofrequency was applied to the IVC-TV isthmus, with catheter electrodes, in 9 patients with AF. Mapping confirmed a right atrial circuit surrounding the IVC in all. In 4 patients another type of AF was induced that followed the circuit in the opposite direction. Radiofrequency interrupted AF in all patients. Multiple endocardial recordings showed that interruption was due to activation block at the point of application. Radiofrequency produced very brief or sustained, atrial fibrillation in 2 patients, which resulted in sinus rhythm. AF recurred in 4 patients with the same activation pattern and was interrupted again with radiofrequency in the IVC-TV isthmus in 3. AF was noninducible in 7 patients after 1 to 4 sessions. AF-free periods of 2 to 18 months without drugs were observed after radiofrequency, but 2 patients had paroxysmal atrial fibrillation. These results confirm that the IVC-TV isthmus is an essential part of the AF circuit. Ablation of this area may be of therapeutic value, but technical improvements are needed. Long-term efficacy of the procedure is uncertain.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0002-9149
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
71
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
705-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Radiofrequency ablation of the inferior vena cava-tricuspid valve isthmus in common atrial flutter.
pubmed:affiliation
Cardiology Service, Hospital Universitario de Getafe, Madrid, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't