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Titolo:
Deterioration in peak systolic velocity is closely related to ischaemia during angioplasty: a vectorcardiographic and tissue Doppler imaging study
Autore:
Jensen, J; Brodin, LA; Lind, B; Eriksson, SV; Jensen-Urstad, M; Sylven, C;
Indirizzi:
Karolinska Hosp, Dept Cariol, S-17176 Stockholm, Sweden Karolinska Hosp Stockholm Sweden S-17176 riol, S-17176 Stockholm, Sweden Huddinge Univ Hosp, Dept Cardiol, S-14186 Huddinge, Sweden Huddinge Univ Hosp Huddinge Sweden S-14186 iol, S-14186 Huddinge, Sweden Huddinge Univ Hosp, Dept Clin Physiol, S-14186 Huddinge, Sweden Huddinge Univ Hosp Huddinge Sweden S-14186 iol, S-14186 Huddinge, Sweden Danderyd Hosp, Dept Med, S-18288 Danderyd, Sweden Danderyd Hosp DanderydSweden S-18288 Dept Med, S-18288 Danderyd, Sweden
Titolo Testata:
CLINICAL SCIENCE
fascicolo: 2, volume: 100, anno: 2001,
pagine: 137 - 143
SICI:
0143-5221(200102)100:2<137:DIPSVI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSLUMINAL CORONARY ANGIOPLASTY; ONLINE COMPUTERIZED VECTORCARDIOGRAPHY; MYOCARDIAL-ISCHEMIA; ARTERY; OCCLUSION; ECHOCARDIOGRAPHY; REPERFUSION; RISK;
Keywords:
angioplasty; myocardial ischaemia; tissue Doppler echocardiography; vectorcardiography;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Jensen, J Karolinska Hosp, Dept Cariol, S-17176 Stockholm, Sweden Karolinska Hosp Stockholm Sweden S-17176 176 Stockholm, Sweden
Citazione:
J. Jensen et al., "Deterioration in peak systolic velocity is closely related to ischaemia during angioplasty: a vectorcardiographic and tissue Doppler imaging study", CLIN SCI, 100(2), 2001, pp. 137-143

Abstract

We tested the hypothesis that the extent of signs of ischaemia detected byvectorcardiography (VCG) during elective coronary angioplasty (percutaneous transluminal coronary angioplasty: PTCA) is related to systolic and diastolic myocardial velocities, as determined by tissue Doppler echocardiography. A total of 15 patients undergoing PTCA (12 men/three women; age 61 +/- 9years), without prior myocardial infarction and with an election fraction of > 50%, were included. The balloon inflation was repeated three times, with minimum intervals of 2 min between inflations. Tissue Doppler echocardiography was performed. in an apical two- or four-chamber view, before and atthe end of each inflation. Peak systolic velocity, time-to-peak systolic velocity (TTP), peak early (E-m) and late (A(m)) diastolic velocities, the E-m/A(m) ratio and jsovolumic relaxation time were measured in the basal segments of the left ventricle. VCG recordings were carried out during the whole procedure. ST vector magnitude (ST-VM) and ST change vector magnitude (STC-VM) were monitored. The total duration and area of each VCG change during inflation were calculated for each patient. Isovolumic relaxation time, peak E-m and A(m) values and the E-m/A(m) ratio did not change significantlyduring inflation. Peak systolic velocity decreased (6.7+/-2.0 to 5.3 +/- 1.9 cm/s; P < 0.001) and TTP increased (157 +/- 60 to 192 +/- 60 ms; P<0.01)during inflation. Both STC-VM rime (r = -0.68, P<0.01) and STC-VM area (r = -0.68, P < 0.01) were related to peak systolic velocity during inflation. STC-VM time was also related (r = 0.55, P < 0.05) to the difference in peak systolic velocity during compared with before inflation. ST-VM was less closely related to peak systolic velocity. Thus the duration and degree of ischaemia, as measured by VCG, are related to peak systolic velocity in the basal segments of the left ventricle.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 22:27:26