Echocardiographic and electrocardiographic diagnoses of left ventricular hypertrophy predict mortality independently of each other in a population of elderly men.
2001 (English)In: Circulation, ISSN 1524-4539, Vol. 103, no 19, 2346-51 p.Article in journal (Refereed) Published
BACKGROUND:The increased risk associated with left ventricular hypertrophy (LVH) diagnosed echocardiographically (Echo-LVH) or electrocardiographically (ECG-LVH) is well known, but the clinically relevant question of how much additional prognostic information would be provided by echocardiographically assessing LVH if a subject's ECG-LVH and hypertension status are known has not been addressed. Methods and RESULTS:We investigated whether Echo-LVH and ECG-LVH predicted total and cardiovascular mortality and morbidity independently of each other and of other cardiovascular risk factors by using a population-based sample of 475 men investigated at age 70 with a median follow-up time of 5.2 years. Echocardiographic left ventricular mass index (LVMI) predicted total mortality (hazards ratio [HR] 1.44, 95% CI 1.09 to 1.92, for a 1-SD increase in LVMI) and cardiovascular mortality (HR 2.38, 95% CI 1.52 to 3.73) independently of ECG-LVH and other cardiovascular risk factors. ECG-LVH, defined as Cornell product >244 microV. s, predicted total mortality (HR 2.89, 95% CI 1.41 to 5.96) independently of LVMI and other cardiovascular risk factors. Thus, Echo-LVH and ECG-LVH provided complementary prognostic information, especially in hypertensive subjects. CONCLUSIONS:Echo-LVH and ECG-LVH predict mortality independently of each other and of other cardiovascular risk factors, implying that Echo-LVH and ECG-LVH in part carry different prognostic information. Therefore, to fully assess the increased risk associated with these conditions, both ECG and echocardiography should be performed.
Place, publisher, year, edition, pages
2001. Vol. 103, no 19, 2346-51 p.
Cardiovascular Diseases/mortality/physiopathology, Cohort Studies, Comparative Study, Echocardiography, Electrocardiography, Heart Ventricles/pathology/physiopathology, Human, Hypertrophy; Left Ventricular/*diagnosis/mortality/physiopathology, Male, Middle Aged, Morbidity, Multivariate Analysis, Predictive Value of Tests, Prognosis, Risk Factors, Sensitivity and Specificity, Support; Non-U.S. Gov't
IdentifiersURN: urn:nbn:se:uu:diva-67492PubMedID: 11352882OAI: oai:DiVA.org:uu-67492DiVA: diva2:95403