Electrocardiogram analysis in high risk population of unexplained sudden death in Yunnan province / 中华心血管病杂志
Chinese Journal of Cardiology
;
(12): 1155-1158, 2007.
Article
in Chinese
| WPRIM
| ID: wpr-299513
ABSTRACT
<p><b>OBJECTIVE</b>The purpose of this study was to analyze the electrocardiographic features of the people living in the area with high incidence of unexplained sudden deaths in Yunnan province.</p><p><b>METHOD</b>The electrocardiograms of 338 residents from three villages (Dayao, Ninglang, Heqing) with high incidence of unexplained sudden deaths and one control village (Dali) were analyzed [averaged age was (33.4 +/- 11.7) years, 175 men and 163 women].</p><p><b>RESULTS</b>The incidence of cardiac arrhythmias was similar low in all groups. The left ventricular hypertrophy was observed in 34.6% of residents from Dayao. QTc significantly prolonged in the residents from all 3 high incidence areas compare the control area of Dali [control (386.8 +/- 27.22) ms, Ninglang (428.92 +/- 25.71) ms, Heqing (440.67 +/- 28.03) ms, Dayao (417.7 +/- 24.00) ms, P < 0.05 vs. control]. Incidence of U wave was significantly higher in Heqing village than that in control village (P < 0.05). The QUc of these 3 villages was (613.67 +/- 37.34) ms, (597.19 +/- 46.47) ms, (608.59 +/- 39.59) ms respectively, and also significantly longer than the control village of Dali (589.33 +/- 41.27) ms (P < 0.05). The typical pattern of U wave presents as enlarged U wave and apparent T-U complex. In the 7 residents who have the family history of unexplained sudden death, 6 residents have U wave, and 4 of them present typical U wave pattern.</p><p><b>CONCLUSION</b>The significant ECG changes in villages with high incidence of unexplained sudden death in Yunnan province were prolonged QTc, enlarged U wave and apparent T-U complex and these ECG features suggested the repolarization abnormalities of the heart in these subjects.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Long QT Syndrome
/
China
/
Mass Screening
/
Epidemiology
/
Death, Sudden
/
Electrocardiography
Type of study:
Etiology study
/
Prognostic study
/
Screening study
Limits:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Country/Region as subject:
Asia
Language:
Chinese
Journal:
Chinese Journal of Cardiology
Year:
2007
Type:
Article
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