Document Detail

Electrocardiographic findings in a middle-aged African population in the Seychelles islands.
MedLine Citation:
PMID:  10691169     Owner:  NLM     Status:  MEDLINE    
This study describes major electrocardiogram (ECG) measurements and diagnoses in a population of African individuals; most reference data have been collected in Caucasian populations and evidence exists for interethnic differences in ECG findings. This study was conducted in the Seychelles islands (Indian Ocean) and included 709 black individuals (343 men and 366 women) aged 25 to 64 years randomly selected from the general population. Resting ECG were recorded by using a validated ECG unit equipped with a measurement and interpretation software (Cardiovit AT-6, Schiller, Switzerland). The epidemiology of 14 basic ECG measurements, 6 composite criteria for left ventricular hypertrophy and 19 specific ECG diagnoses including abnormal rhythms, conduction abnormalities, repolarization abnormalities, and myocardial infarction were examined. Substantial gender and age differences were found for several ECG parameters. Moreover, tracings recorded in African individuals of the Seychelles differed from those collected similarly in Caucasian populations in many respects. For instance, heart rate was approximately 5 beats per minute lower in the African individuals than in selected Caucasian populations, prevalence of first degree atrio-ventricular block was especially high (4.8%), and the average Sokolow-Lyon voltage was markedly higher in African individuals of the Seychelles compared with black and white Americans. The integrated interpretation software detected "old myocardial infarction" in 3.8% of men and 0% of women and "old myocardial infarction possible" in 6.1% and 3%, respectively. Cardiac infarction injury scores are also provided. In conclusion, the study provides reference values for ECG findings in a specific population of people of African descent and stresses the need to systematically consider gender, age, and ethnicity when interpreting ECG tracings in individuals.
N Zerkiebel; F Perret; P Bovet; M Abel; C Jaggy; F Paccaud; L Kappenberger
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of electrocardiology     Volume:  33     ISSN:  0022-0736     ISO Abbreviation:  J Electrocardiol     Publication Date:  2000 Jan 
Date Detail:
Created Date:  2000-03-22     Completed Date:  2000-03-22     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1-15     Citation Subset:  IM    
Department of Internal Medicine, University Hospital, Lausanne, Switzerland.
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MeSH Terms
African Continental Ancestry Group
Age Factors
Developing Countries
Heart Diseases / diagnosis,  epidemiology*
Middle Aged
Sex Factors
Seychelles / epidemiology

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