Linked Life Data

1704579

Source:http://linkedlifedata.com/resource/pubmed/id/1704579

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12 Pt 2
pubmed:dateCreated
1991-3-19
pubmed:abstractText
In 1989, two patients were operated for deep septal "parahisian" pathways in our institution. Three different mapping techniques were used. (1) Epicardial activation mapping with a belt of 21 bipolar electrodes positioned around the heart. This belt was positioned either on the atrial or on the ventricular side of the atrioventricular annulus in order to localize both the atrial and the ventricular insertion of the bypass tract. (2) Right intra-atrial activation mapping on the normothermic beating heart with a bipolar hand-held probe. (3) Right intra-atrial cryomapping at 0 degrees C. The "parahisian" pathways are remote from the epicardium and the pattern of epicardial activation is different from that of the free-wall pathways. Case 1: The electrophysiological study showed a concealed anteroseptal bypass tract. The peroperative atrial epicardial mapping during orthodromic tachycardia (OT) showed simultaneous activation of the posteroseptal area and of the basis of the right appendage. Right intra-atrial mapping during OT showed an anteroseptal "parahisian" pathway. Case 2: The ECG and electrophysiological study showed a right posterior pathway. The first site of epicardial ventricular activation during atrial stimulation was the right posterior area, 30 ms after the onset of the delta wave. The first site of epicardial atrial activation during OT was the posteroseptal area. The right intra-atrial mapping showed a posteroseptal "parahisian" bypass tract. This localization was confirmed with cryomapping. Conclusions: Some patterns of epicardial mapping may suggest the presence of a deep septal "parahisian" bypass tract: retrograde atrial activation at different sites (mimicking activation among multiple pathways); delay between the delta wave and the first epicardial electrogram. Right intra-atrial activation and cryomapping are useful to confirm the diagnosis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0147-8389
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1985-9
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Perioperative mapping of parahisian accessory pathways.
pubmed:affiliation
Cardiology Department, University Hospital Brugmann, Brussels, Belgium.
pubmed:publicationType
Journal Article, Case Reports