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BACKGROUND A study was undertaken to assess the combined association between urban air pollution and emergency admissions for asthma during the years 1986-92 in Barcelona, Helsinki, Paris and London. METHODS Daily counts were made of asthma admissions and visits to the emergency room in adults (age range 15-64 years) and children (< 15 years). Covariates(More)
Short-term effects of air pollution on daily mortality in eight western and five central-eastern European countries have been reported previously, as part of the APHEA project. One intriguing finding was that the effects were lower in central-eastern European cities. The analysis used sinusoidal terms for seasonal control and polynomial terms for(More)
We investigated the short-term effects of air pollution on hospital admissions for chronic obstructive pulmonary disease (COPD) in Europe. As part of a European project (Air Pollution and Health, a European Approach (APHEA)), we analysed data from the cities of Amsterdam, Barcelona, London, Milan, Paris and Rotterdam, using a standardized approach to data(More)
BACKGROUND The electrocardiographic (ECG) diagnosis of left ventricular hypertrophy (LVH) is based on the assumption that QRS voltage increases with left ventricular mass. However, most of patients with echocardiographically detected LVH do not have increased QRS voltage. Reduced intercellular coupling has been observed in LVH patients and animal models.(More)
1 Condensed Abstract We simulated myocardial uncoupling with and without disruption of the left bundle branch using a realistic large-scale computer model. Both caused left axis deviation in the ECG but uncoupling reduced amplitude while bundle branch disruption increased it. Their combination can explain a left bundle branch block ECG with low amplitude. 2(More)
cardiac myocytes under physiological conditions, are described as planar waves traveling along the longitudinal cell axis [1]. Other patterns of Ca 2+ wave propagation – circular or spiral Ca 2+ waves [2, 3] – have been observed in physiological conditions as well. have described spiral calcium waves as individual events. We demonstrate hereby existence of(More)
Update placed by new imaging methods in many applications. And in some applications, ECG is even considered obsolete, eg, in the diagnostics of left ventricular hypertrophy (LVH). The rational way to increase the interest of cardiolo-gists, to attract young scientists, and to increase the value of ECG, is to analyze and consequently to reduce its(More)
The traditional approach to the ECG diagnosis of left ventricular hypertrophy (LVH) is focused on the best estimation of left ventricular mass (LVM) i.e. finding ECG criteria that agree with LVM as detected by imaging. However, it has been consistently reported that the magnitude of agreement is rather low as reflected in the low sensitivity of ECG(More)
This study presents a new method for estimation and imaging of the area at risk (AaR) in myocardial infarction (MI). The values of the ST-segment deviations of 12-lead ECG signal were used as input parameters. Based on DECARTO model, the spherical surface was chosen as a reference surface to approximate the ventricular wall. On this surface, the spatial ST(More)
BACKGROUND The aim of this project was to study changes in QRS amplitude in junior female athletes during the initial twenty-one months of competitive training programme in aerobic gymnastics. METHODS Somatometric parameters, heart rate (HR), blood pressure (BP) and 12-lead ECGs were recorded in 12 female athletes, aged 13-17 years (average 13.8) at(More)