Recent studies have linked the pathogenesis of the ECG manifestations of this syndrome to heterogeneous loss of the action potential dome, causing a marked epicardial and transmural disperion of repolarization, which may result in the production of ST-segment elevation, thus giving rise to phase 2 ...
The application of such methods to ECG time series analysis, in normal subjects as well as in patients with heart disease, is less investigated. The present study was undertaken to test whether nonlinear analysis of ECG can define possible changes in the complexity of cardiac dynamics in patients...
Accurate determination of events, including AO, could make SCG a diagnostic tool for cardiac disease, comparable with the ECG. In addition, SCG could become an important tool in e.g., arterial pulse transit time (PTT) analysis for the assessment of vascular status17,18,19,20. However, the...
Causes: Prehypertension can result from various factors including a family history of hypertension, a high-sodium diet, lack of physical activity, obesity, and excessive alcohol consumption. Symptoms: Often, there are no clear symptoms of prehypertension, making regular blood pressure monitoring crucial...
With increasing altitude, air pressure and O2 partial pressure (PO2) in the ambient air decrease, so that oxygen can no longer be absorbed as well by the hemoglobin. The result is a lower partial pressure of oxygen in the blood as well as a lower oxygen saturation. Via peripheral chemorece...
Cardiovascular magnetic resonance (CMR) enables assessment and quantification of morphological and functional parameters of the heart, including chamber size and function, diameters of the aorta and pulmonary arteries, flow and myocardial relaxation time
The reason for this is that maximum exercise leads to isometric muscle contraction and, as a result, peripheral vascular resistance increases sharply.49 However it is well known that physical activity can lower blood pressure in the long term: while it lowers the sympathetic tone, the vagus tone...
functional, since they result in alternating systolic discharge and diastolic suction on arterial blood, i.e., an “intramyocardial pump”47, which has also been interpreted as time-varying elastance of the cardiac tissue48,49. In addition, remarkable differences in the effect of cardiac ...
A selection of healthy participants for the analysis of FT4 could be the result. We analyzed the associations of TSH and risk of atrial fibrillation in the original TSH sample (n = 1426) and in the sample for which a FT4 measurement was also available (n = 1177) and concluded that the ...
Comparison of delayed exercise 99m TC-MIBI SPET versus early rest 99m TC-MIBI SPET in patients with acute chest pain and normal ECG Alberto Conti, Chiara Gallini, Barbara Paladini, Maurizio Zanobetti, Iacopo Olivotto, Stefano Grifoni, Giancarlo Berni, Egidio Costanzo, Paolo Ferri, Maria Matte...