TY - JOUR
T1 - Ethnic differences in ST height in the Multiethnic Study of Atherosclerosis
AU - Reddy, Vikram K.
AU - Gapstur, Susan M.
AU - Prineas, Ronald
AU - Colangelo, Laura A.
AU - Ouyang, Pamela
AU - Kadish, Alan H.
PY - 2008/10
Y1 - 2008/10
N2 - Background: ST elevation in precordial leads has been associated with genetic syndromes of arrhythmias and sudden death. ST height data in different ethnic groups are limited. Methods: ST height was determined in 4612 African-American, Chinese, Hispanic, and non-Hispanic white men and women aged 45-84 years in the Multiethnic Study of Atherosclerosis (MESA). For leads I, II, and V1 to V6, ST height, measured at the J point and 60 ms after the J point, adjusted for covariates were compared between non-Hispanic white and other ethnic groups using analysis of covariance (ANCOVA). Results: Among men, ST height was significantly different across all ethnic groups at both time points for all leads (P < 0.01), except at the J point for limb lead II (P = 0.2). Among women, differences were also significant at the J point and 60 ms past the J point (P < 0.01). ST height was lowest for non-Hispanic whites in all leads and at both time points. At the J point, Chinese had the highest ST height for leads V1 and V2, whereas African Americans had the greatest ST height for leads I and V3 to V 6. At 60 ms past the J point, Chinese men had the greatest ST height for lead I and V1 to V6; and Chinese women had greatest ST height for leads V1 to V3. Conclusions: There were significant differences in ST height among ethnic groups in all ECG leads. The physiological mechanisms and clinical significance of these differences and the possible association with arrhythmias require further study.
AB - Background: ST elevation in precordial leads has been associated with genetic syndromes of arrhythmias and sudden death. ST height data in different ethnic groups are limited. Methods: ST height was determined in 4612 African-American, Chinese, Hispanic, and non-Hispanic white men and women aged 45-84 years in the Multiethnic Study of Atherosclerosis (MESA). For leads I, II, and V1 to V6, ST height, measured at the J point and 60 ms after the J point, adjusted for covariates were compared between non-Hispanic white and other ethnic groups using analysis of covariance (ANCOVA). Results: Among men, ST height was significantly different across all ethnic groups at both time points for all leads (P < 0.01), except at the J point for limb lead II (P = 0.2). Among women, differences were also significant at the J point and 60 ms past the J point (P < 0.01). ST height was lowest for non-Hispanic whites in all leads and at both time points. At the J point, Chinese had the highest ST height for leads V1 and V2, whereas African Americans had the greatest ST height for leads I and V3 to V 6. At 60 ms past the J point, Chinese men had the greatest ST height for lead I and V1 to V6; and Chinese women had greatest ST height for leads V1 to V3. Conclusions: There were significant differences in ST height among ethnic groups in all ECG leads. The physiological mechanisms and clinical significance of these differences and the possible association with arrhythmias require further study.
KW - ECG
KW - Ethnic
KW - Repolarization
KW - ST height
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U2 - 10.1111/j.1542-474X.2008.00252.x
DO - 10.1111/j.1542-474X.2008.00252.x
M3 - Article
C2 - 18973491
AN - SCOPUS:54349115710
SN - 1082-720X
VL - 13
SP - 341
EP - 351
JO - Annals of Noninvasive Electrocardiology
JF - Annals of Noninvasive Electrocardiology
IS - 4
ER -