Ethnic differences in electrocardiographic amplitude measurements

Ishak A. Mansi, Ira S. Nash

Research output: Contribution to journalArticle

Abstract

Background: There is controversy regarding ethnic differences in electrocardiographic (ECG) patterns because of potentially confounding socioeconomic, nutritional, environmental and occupational factors. Methods: We reviewed the first 1000 medical files of a multi-ethnic community, where all individuals shared similar living conditions. Only healthy adults age 15 to 60 years were included. Wave amplitudes were measured manually from the standard 12 lead-ECG. Minnesota coding was used. Results: ECGs from 597 subjects were included in the study: 350 Saudi Arabians, 95 Indians, 39 Jordanians, 17 Sri-Lankans, 39 Filipinos, and 57 Caucasians; 349 were men. The mean±SD of Sokolow-Lyon voltage (SLV) in men was significantly different among ethnic groups (2.9 ± 0.86, 2.64 ± 0.79, 2.73 ± 0.72, 3.23 ± 0.61, 2.94 ± 0.6, 2.58 ± 0.79 mV; P=0.0006, for Saudis, Indians, Jordanians, Filipinos, Sri-Lankans, and Caucasians, respectively). SLV was similar among ethnic groups in women. The prevalence of early transition patterns was also different among ethnic groups in men but not women (15.8%, 34.6%, 17.9%, 21.7%, 35.3%, 26.8% in Saudi, Indian, Jordanian, Filipino, Sri-Lankan, and Caucasian men, respectively, P=0.037). T wave amplitude was significantly different among ethnic groups in selected leads. Conclusions: ECG wave amplitude differs with ethnic origin even when other factors are similar. Using SLV of 3.5 mV as a criterion may overestimate the incidence of left ventricular hypertrophy in some ethnic groups. The pattern of high R wave in lead V1 is common in healthy adults in certain ethnic groups. T wave height differs with ethnic origin and sex.

Original languageEnglish (US)
Pages (from-to)459-464
Number of pages6
JournalAnnals of Saudi Medicine
Volume24
Issue number6
StatePublished - Nov 1 2004

Fingerprint

Ethnic Groups
Social Conditions
Left Ventricular Hypertrophy
Electrocardiography
Incidence

Keywords

  • Electrocardiography
  • Ethnicity
  • Left ventricular hypertrophy
  • T wave

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Ethnic differences in electrocardiographic amplitude measurements. / Mansi, Ishak A.; Nash, Ira S.

In: Annals of Saudi Medicine, Vol. 24, No. 6, 01.11.2004, p. 459-464.

Research output: Contribution to journalArticle

@article{94666a4c08874652ac96c35b668fd5a2,
title = "Ethnic differences in electrocardiographic amplitude measurements",
abstract = "Background: There is controversy regarding ethnic differences in electrocardiographic (ECG) patterns because of potentially confounding socioeconomic, nutritional, environmental and occupational factors. Methods: We reviewed the first 1000 medical files of a multi-ethnic community, where all individuals shared similar living conditions. Only healthy adults age 15 to 60 years were included. Wave amplitudes were measured manually from the standard 12 lead-ECG. Minnesota coding was used. Results: ECGs from 597 subjects were included in the study: 350 Saudi Arabians, 95 Indians, 39 Jordanians, 17 Sri-Lankans, 39 Filipinos, and 57 Caucasians; 349 were men. The mean±SD of Sokolow-Lyon voltage (SLV) in men was significantly different among ethnic groups (2.9 ± 0.86, 2.64 ± 0.79, 2.73 ± 0.72, 3.23 ± 0.61, 2.94 ± 0.6, 2.58 ± 0.79 mV; P=0.0006, for Saudis, Indians, Jordanians, Filipinos, Sri-Lankans, and Caucasians, respectively). SLV was similar among ethnic groups in women. The prevalence of early transition patterns was also different among ethnic groups in men but not women (15.8{\%}, 34.6{\%}, 17.9{\%}, 21.7{\%}, 35.3{\%}, 26.8{\%} in Saudi, Indian, Jordanian, Filipino, Sri-Lankan, and Caucasian men, respectively, P=0.037). T wave amplitude was significantly different among ethnic groups in selected leads. Conclusions: ECG wave amplitude differs with ethnic origin even when other factors are similar. Using SLV of 3.5 mV as a criterion may overestimate the incidence of left ventricular hypertrophy in some ethnic groups. The pattern of high R wave in lead V1 is common in healthy adults in certain ethnic groups. T wave height differs with ethnic origin and sex.",
keywords = "Electrocardiography, Ethnicity, Left ventricular hypertrophy, T wave",
author = "Mansi, {Ishak A.} and Nash, {Ira S.}",
year = "2004",
month = "11",
day = "1",
language = "English (US)",
volume = "24",
pages = "459--464",
journal = "Annals of Saudi Medicine",
issn = "0256-4947",
publisher = "Medknow Publications and Media Pvt. Ltd",
number = "6",

}

TY - JOUR

T1 - Ethnic differences in electrocardiographic amplitude measurements

AU - Mansi, Ishak A.

AU - Nash, Ira S.

PY - 2004/11/1

Y1 - 2004/11/1

N2 - Background: There is controversy regarding ethnic differences in electrocardiographic (ECG) patterns because of potentially confounding socioeconomic, nutritional, environmental and occupational factors. Methods: We reviewed the first 1000 medical files of a multi-ethnic community, where all individuals shared similar living conditions. Only healthy adults age 15 to 60 years were included. Wave amplitudes were measured manually from the standard 12 lead-ECG. Minnesota coding was used. Results: ECGs from 597 subjects were included in the study: 350 Saudi Arabians, 95 Indians, 39 Jordanians, 17 Sri-Lankans, 39 Filipinos, and 57 Caucasians; 349 were men. The mean±SD of Sokolow-Lyon voltage (SLV) in men was significantly different among ethnic groups (2.9 ± 0.86, 2.64 ± 0.79, 2.73 ± 0.72, 3.23 ± 0.61, 2.94 ± 0.6, 2.58 ± 0.79 mV; P=0.0006, for Saudis, Indians, Jordanians, Filipinos, Sri-Lankans, and Caucasians, respectively). SLV was similar among ethnic groups in women. The prevalence of early transition patterns was also different among ethnic groups in men but not women (15.8%, 34.6%, 17.9%, 21.7%, 35.3%, 26.8% in Saudi, Indian, Jordanian, Filipino, Sri-Lankan, and Caucasian men, respectively, P=0.037). T wave amplitude was significantly different among ethnic groups in selected leads. Conclusions: ECG wave amplitude differs with ethnic origin even when other factors are similar. Using SLV of 3.5 mV as a criterion may overestimate the incidence of left ventricular hypertrophy in some ethnic groups. The pattern of high R wave in lead V1 is common in healthy adults in certain ethnic groups. T wave height differs with ethnic origin and sex.

AB - Background: There is controversy regarding ethnic differences in electrocardiographic (ECG) patterns because of potentially confounding socioeconomic, nutritional, environmental and occupational factors. Methods: We reviewed the first 1000 medical files of a multi-ethnic community, where all individuals shared similar living conditions. Only healthy adults age 15 to 60 years were included. Wave amplitudes were measured manually from the standard 12 lead-ECG. Minnesota coding was used. Results: ECGs from 597 subjects were included in the study: 350 Saudi Arabians, 95 Indians, 39 Jordanians, 17 Sri-Lankans, 39 Filipinos, and 57 Caucasians; 349 were men. The mean±SD of Sokolow-Lyon voltage (SLV) in men was significantly different among ethnic groups (2.9 ± 0.86, 2.64 ± 0.79, 2.73 ± 0.72, 3.23 ± 0.61, 2.94 ± 0.6, 2.58 ± 0.79 mV; P=0.0006, for Saudis, Indians, Jordanians, Filipinos, Sri-Lankans, and Caucasians, respectively). SLV was similar among ethnic groups in women. The prevalence of early transition patterns was also different among ethnic groups in men but not women (15.8%, 34.6%, 17.9%, 21.7%, 35.3%, 26.8% in Saudi, Indian, Jordanian, Filipino, Sri-Lankan, and Caucasian men, respectively, P=0.037). T wave amplitude was significantly different among ethnic groups in selected leads. Conclusions: ECG wave amplitude differs with ethnic origin even when other factors are similar. Using SLV of 3.5 mV as a criterion may overestimate the incidence of left ventricular hypertrophy in some ethnic groups. The pattern of high R wave in lead V1 is common in healthy adults in certain ethnic groups. T wave height differs with ethnic origin and sex.

KW - Electrocardiography

KW - Ethnicity

KW - Left ventricular hypertrophy

KW - T wave

UR - http://www.scopus.com/inward/record.url?scp=10644254848&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=10644254848&partnerID=8YFLogxK

M3 - Article

VL - 24

SP - 459

EP - 464

JO - Annals of Saudi Medicine

JF - Annals of Saudi Medicine

SN - 0256-4947

IS - 6

ER -