The Relationship between CAD Family History and the Abnormal CHD-related ECG among 2520 Cases with Hypertensio in Ningxia

Objective To explore relationship between CAD family history and CHD-related ECG abnormalities.Methods The baseline data of 2524 cases with hypertension who entered Disease Control Project of Ministry-National standardized on High Blood Pressure and the Ministry of Health Industry Fund-cardiovascular disease risk factor surveillance and high blood pressure standardized management in Ningxia were analyzed.Results The proportion of answering unclear for family history of coronary heart disease significantly increased with age while clear significantly reduced with age(P0.05).The rate of abnormal ECG in cases under 50 years old with positive family history of CHD was significantly higher than that in cases with negative family history of CHD(17.2% vs 9.5%,P0.05).The rate of abnormal ECG showed no significant difference between different family history of CHD in cases aged above 50(P0.05).Cases with positive family history of CHD had significantly higher BMI,blood pressure,and TC than cases with negative family history of CHD had.Logistic regression analysis showed that family history of CHD significantly increased risk of abnormal ECG(OR=1.51,95%CI=1.09-2.10).Furthermore,after excluding people above 50 age old,the family history of CHD was independent risk factor of abnormal ECG.Conclusion Family history of CHD was independent risk factor of abnormal ECG,especially in cases aged under 50.