Linked Life Data

9584301

Source:http://linkedlifedata.com/resource/pubmed/id/9584301

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4 Pt 1
pubmed:dateCreated
1998-7-2
pubmed:abstractText
Altered sequence of ventricular activation sequence results in marked derangements in mechanical events. In the present study, we investigated the comparative effects of atrial and AV sequential pacing on collateral blood flow during angioplasty. Twenty-eight patients with stable angina and left anterior descending artery disease undergoing balloon angioplasty were studied. Collateral flow was determined during balloon inflation from the distal flow velocity of the ipsilateral artery (17 patients) or from the increase of the maximal diastolic blood flow velocity (Vc) of the contralateral artery (11 patients). Flow measurements were made using the Doppler flow guidewire. The relative resistance in the collateral vascular bed (RR) also was estimated in the latter group of patients. After the first balloon inflation, two similar consecutive balloon inflations were done under atrial and AV sequential pacing, at a rate of 15 beats/min higher than the sinus rate, in the absence of vasoactive medication. One minute after the initiation of pacing, the second and third balloon inflations were begun and the pacing continued until the balloon inflations were completed. In the ipsilateral group, average peak velocity was 84.6 +/- 24.2 mm/2 during atrial pacing and 82.7 +/- 29.7 mm/s during AV sequential pacing (P = NS). In the contralateral group, Vc was 18% +/- 12% during atrial pacing and 17% +/- 14% during AV sequential pacing, and the RR was 4.5 +/- 4.7 and 4.9 +/- 6.4, respectively (both P = NS). The coronary wedge/mean blood pressure was similar during the two tested balloon inflations. Short-term AV sequential pacing at rest does not adversely affect collateral blood flow and resistance in patients with left anterior descending artery disease.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0147-8389
pubmed:author
pubmed:issnType
Print
pubmed:volume
21
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
706-13
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Short-term atrioventricular sequential pacing does not adversely affect collateral blood flow: a study during angioplasty.
pubmed:affiliation
Second Department of Cardiology, Onassis Cardiac Surgery Center, Athens, Greece.
pubmed:publicationType
Journal Article, Comparative Study