Linked Life Data

3813117

Source:http://linkedlifedata.com/resource/pubmed/id/3813117

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12 Pt 1
pubmed:dateCreated
1987-2-25
pubmed:abstractText
In this report, we describe our initial experience with a new rate-responsive TX pacemaker in 10 patients. This pacemaker system uses a conventional transvenous ventricular electrode, which senses the evoked QT interval after a ventricular paced beat, as an indicator of physiological metabolic demand. Implantation of the TX pacemaker does not differ from that of conventional VVI units, and two special modes are available after implantation: TX and VVI mode. Bicycle ergometer tests showed that significantly higher rate response and exercise ability were achieved during the TX mode compared with the VVI mode (mean maximal heart rate: 115 +/- 13 bpm vs 96 +/- 21 bpm, p less than 0.01, and mean maximal exercise time; 10.7 +/- 3.9 min vs 8.0 +/- 3.8 min, p less than 0.01, respectively). In one patient, cardiac index was measured by a thermodilution method during the bicycle ergometer test, which confirmed that an adequate increase in cardiac index (rest: 3.38 liters/min/m2, vs exercise; 7.34 liters/min/m2) was obtained by an increase of the pacing rate (rest: 72 bpm vs exercise: 128 bpm). Our results show that physiological rate-responsive pacing using the QT interval provides a simple means of increasing the heart rate and cardiac index.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0003-3197
pubmed:author
pubmed:issnType
Print
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
888-95
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Clinical experience with a new rate-responsive TX pacemaker.
pubmed:publicationType
Journal Article, Comparative Study