Linked Life Data

8734741

Source:http://linkedlifedata.com/resource/pubmed/id/8734741

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1996-10-21
pubmed:abstractText
The purpose of the current study was to characterize the effects of transvenous ICD shocks on myocardial impedance. Rather than recording impedance during shocks, it was measured during continuous pacing in order to minimize confounding effects such as electrode polarization. Pacing impedance (reflecting the combined impedances of the electrode-tissue interface, myocardium, and blood pool) was measured every 5 seconds before and after 58 single shocks in 22 patients undergoing ICD implantation with a Transvene (n = 14) or Endotak (n = 8) lead. There was a progressive and long-lasting decrease in impedance after shocks. The magnitude of this change was similar for 0.6-J test shocks and shocks > or = 5 J (28 +/- 32 omega vs 23 +/- 16 omega; P = 0.8). However, the drop in impedance was more abrupt after high energy shocks. Because impedance continued to decline throughout the 5-minute interval between shocks, successive shocks had a cumulative effect, with a decrease of 46 +/- 42 omega after four discharges. In conclusion, a progressive decline in pacing impedance is a characteristic response to transvenous ICD discharges.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0147-8389
pubmed:author
pubmed:issnType
Print
pubmed:volume
19
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
752-7
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Effects of high energy shocks on pacing impedance during transvenous ICD implantation.
pubmed:affiliation
Cardiology Division, Emory University Hospital, Atlanta, Georgia 30322, USA.
pubmed:publicationType
Journal Article