Prevalence of Cardiac Arrhythmias in Thai Community
SONGSAK KIATCHOOSAKUN, M.D.*,
AROON CHIRA WATKUL**,
PYATAT TATSANAVIVAT,M.D.*
ORA THAI PACHIRAT, M.D.*,
CHANPEN CHOPRAPAWAN, M.D.***,
Affiliation : * Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002,
** Department of Biostatistics and Demography, Faculty of Public Health, Khon Kaen University, Khon Kaen 40002.
*** Health Systems Research Institute, Ministry of Public Health, Nonthaburi 11000, Thailand.
AbstractThe resting 12 leads electrocardiogram was recorded in 3,822 men and 4,969 women
(aged 30 years or over), who participated in the First National Health Examination Surv~y of
Thailand and the data was used to determine the prevalence of cardiac arrhythmias. In this appa-
rently normal population 362 subjects (the standard age adjusted rate was 39.2 per thousand)
had cardiac arrhythmia. The prevalence rate of atrial fibrillation was 3.6 per thousand (males 3.6,
females 3.6) and ventricular premature beat was 12.1 per thousand (males 7.3, females 15.6). For
atrial premature beat, complete and incomplete right bundle branch blocks, sinus arrhythmia,
first degree atrioventricular block and delta wave, the prevalence rates were 4.0, 7 .0, 4.6, 2.7, 2.4
and 1.3 per thousand respectively. Complete and incomplete left branch blocks, left anterior
hemiblock, second degree antrioventricular block and short PR interval were rare in this survey.
Keywords : Arrhythmia, Electrocardiogram, Prevalence, Community, Thailand
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