Linked Life Data

17884074

Source:http://linkedlifedata.com/resource/pubmed/id/17884074

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2008-3-10
pubmed:abstractText
This report deals with a patient with single-lead VDD pacemaker and intermittent atrial sensing failure. At first glance, the electrocardiogram suggested a VVI mechanism of pacing, being paced QRS complexes dissociated from sinus P waves: this revealed that intracardiac atrial electrograms were too small to reach the sensing threshold. At times, however, a sinus P wave triggered ventricular pacing. This only occurred when the spontaneous atrial activity fell within a critical interval ranging from 430 to 480 milliseconds from the previous paced QRS complex. Analysis of pulsed wave Doppler mitral flow recording demonstrated that atrial sensing and related ventricular pacing occurred whenever a sinus P wave coincided with the opening click of mitral valve. In this circumstance, the atrial volume decrease allowed the freely floating atrial lead to lie close to the right atrial wall, favoring sensing of a small intracardiac electrogram.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
1532-8430
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
91-3
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:articleTitle
Intermittent atrial sensing in a VDD pacemaker.
pubmed:affiliation
Department of Medicine and Pharmacology, University Hospital of Messina, Messina, Italy. oretogmp@tin.it
pubmed:publicationType
Journal Article, Case Reports