Early assessment of long-term risk with continuous ST-segment monitoring among patients with unstable coronary syndromes. Results from 1-year follow-up in the TRIM study
P. Abrahamsson et al., Early assessment of long-term risk with continuous ST-segment monitoring among patients with unstable coronary syndromes. Results from 1-year follow-up in the TRIM study, J ELCARDIOL, 34(2), 2001, pp. 103-108
A total of 323 patients who took part in the TRIM trial underwent an initia
l 24 h continuous electrocardiogram ST-segment monitoring. A ST vector magn
itude (ST-VM) maximum greater than or equal to 24 muV predicted death or my
ocardial infarction within 1 year with a 78% specificity and a 52% sensitiv
ity, an area under the ST-VM trend curve greater than or equal to 162 mu wi
th a 86% specificity and a 42% sensitivity and presence of ST-VM episodes w
ith a 70% specificity and a 68% sensitivity. Patients who had neither ST-VM
episodes nor a ST-maximum greater than or equal to 144 muV had only a 4.5%
incidence of death or myocardial infarction within one year as compared to
18% among those patients who met any of these criteria. ST-segment monitor
ing with continuous vectorcardiography is feasible for risk stratification
at least up to 1 year after an episode of unstable coronary artery disease
and several vectorcardiographic parameters may be used.