Linked Life Data

1235327

Source:http://linkedlifedata.com/resource/pubmed/id/1235327

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1977-5-25
pubmed:abstractText
Electrophysiologic evidence for dual pathways of conduction through the A-V node is presented in three patients without history of supraventricular tachycardia. In case 1, abrupt spontaneous changes in the PR interval from 0.17 to 0.42 second were seen. His bundle electrographic studies showed two sets of A-H intervals during sinus rhythm and at several atrial pacing rates, although at rates over 100 per minute only the slow pathway conducted. Using the extrastimulus method, different refractory periods for the fast and slow pathways were documented. Cases 2 and 3 underwent His bundle electrography studies to evaluate intraventricular conduction defects. During atrial pacing studies abrupt changes in the A-H interval, from 220 to 470 msec and from 220 to 370 msec, were observed on increasing the pacing rate from 90 to 95 per minute in case 2 and from 120 to 130 per minute in case 3. In these two patients, dual A-V nodal pathways were suggested by the sudden changes in the A-H -interval at critical pacing rates. These findings indicate that evidence suggesting dual pathways of conduction through the A-V node may not be an uncommon finding and may be present without the manifestation of recurrent supraventricular tachycardias.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0012-3692
pubmed:author
pubmed:issnType
Print
pubmed:volume
67
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
36-42
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1975
pubmed:articleTitle
Evidence suggesting dual A-V nodal pathways in patients without supraventricular tachycardias.
pubmed:publicationType
Journal Article, Case Reports