Rasmus Mogelvang1, Tor Biering-Sørensen2, Jan Skov Jensen3. 1. Copenhagen City Heart Study, Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark Department of Cardiology, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, DK-2100, Afd. 2141, Copenhagen, Denmark rasmus.mogelvang@get2net.dk. 2. Copenhagen City Heart Study, Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark Department of Cardiology, Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark. 3. Copenhagen City Heart Study, Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark Department of Cardiology, Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark Institute of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark.
Abstract
AIMS: To improve risk prediction of cardiovascular morbidity and mortality, we need sensitive markers of cardiac dysfunction; Echocardiographic Tissue Doppler Imaging (TDI) is feasible and harmless and may be ideal for this purpose. METHODS AND RESULTS: Within the community-based Copenhagen City Heart Study, 2064 participants were examined by echocardiography including TDI and followed (median 10.9 years) with regard to cardiovascular death, heart failure, or acute myocardial infarction (n = 277). Impaired systolic (s') and diastolic (e' and a') function according to age and sex as assessed by TDI was associated with increased risk of the combined end point, even in the subgroup of persons with a normal conventional echocardiographic examination [per 1 cm/s decrease: s': HR 1.32 (1.12-1.57), P < 0.001; e': HR 1.17(1.04-1.31), P < 0.01; a': HR 1.17 (1.06-1.30), P < 0.005]. Interestingly, reduced early diastolic myocardial velocity (e') was associated with risk of acute myocardial infarction, whereas reduced systolic (s') or late diastolic function (a') was associated with heart failure and cardiovascular death independently of traditional risk factors, plasma proBNP, and conventional echocardiographic measures. Combining information on early and late diastolic function by TDI provided incremental prognostic information and improved risk classification (net reclassification improvement: 27%; P < 0.001) and remained a significant predictor of the combined end point even in the subgroup with a normal conventional echocardiographic examination [per cm/s decrease: HR 1.18 (1.08-1.28), P < 0.001]. CONCLUSION: In the general population, TDI identifies individuals with cardiac dysfunction and high risk of cardiovascular morbidity and mortality independently of traditional risk factors, even in persons with a normal conventional echocardiographic examination. Published on behalf of the European Society of Cardiology. All rights reserved.
AIMS: To improve risk prediction of cardiovascular morbidity and mortality, we need sensitive markers of cardiac dysfunction; Echocardiographic Tissue Doppler Imaging (TDI) is feasible and harmless and may be ideal for this purpose. METHODS AND RESULTS: Within the community-based Copenhagen City Heart Study, 2064 participants were examined by echocardiography including TDI and followed (median 10.9 years) with regard to cardiovascular death, heart failure, or acute myocardial infarction (n = 277). Impaired systolic (s') and diastolic (e' and a') function according to age and sex as assessed by TDI was associated with increased risk of the combined end point, even in the subgroup of persons with a normal conventional echocardiographic examination [per 1 cm/s decrease: s': HR 1.32 (1.12-1.57), P < 0.001; e': HR 1.17(1.04-1.31), P < 0.01; a': HR 1.17 (1.06-1.30), P < 0.005]. Interestingly, reduced early diastolic myocardial velocity (e') was associated with risk of acute myocardial infarction, whereas reduced systolic (s') or late diastolic function (a') was associated with heart failure and cardiovascular death independently of traditional risk factors, plasma proBNP, and conventional echocardiographic measures. Combining information on early and late diastolic function by TDI provided incremental prognostic information and improved risk classification (net reclassification improvement: 27%; P < 0.001) and remained a significant predictor of the combined end point even in the subgroup with a normal conventional echocardiographic examination [per cm/s decrease: HR 1.18 (1.08-1.28), P < 0.001]. CONCLUSION: In the general population, TDI identifies individuals with cardiac dysfunction and high risk of cardiovascular morbidity and mortality independently of traditional risk factors, even in persons with a normal conventional echocardiographic examination. Published on behalf of the European Society of Cardiology. All rights reserved.
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