TY - JOUR
T1 - T-loop morphology as a marker of cardiac events in the elderly
AU - Kors, Jan A.
AU - De Bruyne, Martine C.
AU - Hoes, Arno W.
AU - Van Herpen, Gerard
AU - Hofman, Albert
AU - Van Bemmel, Jan H.
AU - Grobbee, Diederick E.
PY - 1998/1/1
Y1 - 1998/1/1
N2 - ST-T wave changes of electrocardiographic (ECG) leads have long been recognized as predictors of future cardiac events, but they only imperfectly characterize T-loop morphology. Using vectorcardiographic (VCG) parameters, we investigated the predictive value of T-loop abnormality for fatal and nonfatal cardiac events in a prospective cohort study among 5,815 elderly. Separately, the predictive value of an easily obtainable T-loop parameter, the T axis, was also assessed. Measurements were determined by a computer program, using VCGs reconstructed from the standard 12-lead ECGs. During the 3 to 6 (mean 4) years of follow-up, 166 fatal and 193 nonfatal cardiac events occurred. Subjects with an abnormal T-loop morphology had increased risks for fatal cardiac events (hazard ratio 4.3; 95% CI 3.0-6.4) and nonfatal cardiac events (3.0; 1.9-4.8). Risks associated with an abnormal T axis alone were only slightly lower. Additional adjustment for established cardiovascular risk indicators resulted in lower, but still highly significant risks. Both T-loop and T-axis abnormalities appear to be strong, independent risk indicators of cardiac events in the elderly.
AB - ST-T wave changes of electrocardiographic (ECG) leads have long been recognized as predictors of future cardiac events, but they only imperfectly characterize T-loop morphology. Using vectorcardiographic (VCG) parameters, we investigated the predictive value of T-loop abnormality for fatal and nonfatal cardiac events in a prospective cohort study among 5,815 elderly. Separately, the predictive value of an easily obtainable T-loop parameter, the T axis, was also assessed. Measurements were determined by a computer program, using VCGs reconstructed from the standard 12-lead ECGs. During the 3 to 6 (mean 4) years of follow-up, 166 fatal and 193 nonfatal cardiac events occurred. Subjects with an abnormal T-loop morphology had increased risks for fatal cardiac events (hazard ratio 4.3; 95% CI 3.0-6.4) and nonfatal cardiac events (3.0; 1.9-4.8). Risks associated with an abnormal T axis alone were only slightly lower. Additional adjustment for established cardiovascular risk indicators resulted in lower, but still highly significant risks. Both T-loop and T-axis abnormalities appear to be strong, independent risk indicators of cardiac events in the elderly.
KW - Computerized analysis
KW - Coronary heart disease
KW - Electrocardiography
KW - Repolarization disturbance
KW - Risk factors
UR - http://www.scopus.com/inward/record.url?scp=0032417914&partnerID=8YFLogxK
U2 - https://doi.org/10.1016/S0022-0736(98)90289-8
DO - https://doi.org/10.1016/S0022-0736(98)90289-8
M3 - Article
C2 - 9988006
SN - 0022-0736
VL - 31
SP - 54
EP - 59
JO - Journal of electrocardiology
JF - Journal of electrocardiology
IS - SUPPL.
ER -