View clinical trials related to Diastolic Function.
Filter by:It is a prospective, controlled, single-center, non-randomized, observational study. From September 2019 to December 2020, the study plans to prospectively include 400 patients aged 18 to 90 years. Every patients will undergo an echocardiographic examination with assessment diastolic dysfunction of the left ventricle, and registration of an electrocardiogram using a single lead ECG monitor CardioQvark (in I standard lead) for 3 minutes. All patients will be divided into 2 main groups: with diastolic dysfunction of the left ventricle, confirmed by the results of the echocardiography and without. A spectral analysis of the electrocardiogram will be performed using a continuous wavelet transform. The result of this study will be the identification of ECG parameters that will correlate with LV diastolic dysfunction.
Background It is known from previous research that in patients with complete AV (atrioventricular) block and pacemaker stimulation stroke volume and cardiac output are higher with AV-synchronous than with AV-dyssynchronous pacing. However, the extent to which patients profited from AV-synchronous stimulation varied substantially. Aim of the study Aim of this study is to systematically analyze the impact of diastolic function and other echo parameters on the difference of stroke volumes/cardiac output between AV-synchronous and AV-dyssynchronous pacing modes. Methods Patients fulfilling the entry criteria will be enrolled (two-chamber pacemaker of any vendor eligible) in this monocentric, prospective, interventional study. Baseline data will be collected with a standardized questionnaire. During an echo examination, parameters of diastolic, systolic and atrial function will be assessed. Then, the stroke volume/cardiac output will be measured twice in each patient, once with AV-synchronous and once with AV-dyssynchronous pacing. Therefore, each patient will represent their own control. It will be randomized (coin tossing) which stimulation mode is first and which is second (sonographer and patient will be blinded). Descriptive statistics will be applied and regression models will be fitted to explore the data.
Comparing the hemodynamic and cardiac effects of two types of weaning trials of mechanical ventilation in ICU patients of two French ICU.
This prospective study focuses on the interest of the echocardiography for cirrhotic patients, who present acute kidney injury corresponding to the criteria of hepatorenal syndrome. This echocardiography will be done before the volemic expansion and the final diagnostic of hepatorenal syndrome or prerenal azotemia. The primary endpoint is to describe the hemodynamic characteristics of this population at the time of acute kidney injury and their association with diagnostic of hepatorenal syndrome or prerenal azotemia. Patients with elevated filling pressure, predicting poor outcome of volemic expansion will be excluded of the study after the echocardiography and will not undergo volemic expansion but appropriate management.