View clinical trials related to Echocardiography.
Filter by:Cardiac amyloidosis (CA) has recently been reported as a common cause of heart failure with preserved left ventricular ejection fraction (HFpEF), with a prevalence of 6% in elderly HFpEF patients. However, the diagnosis of CA is still challenging and requires multiple costly investigations. Regardless of the type of CA, TTR or AL, early diagnosis significantly improves prognosis. In this study, the investigators aimed to determine the prevalence of CA in Tunisian HFpEF patients and to identify clinical and ultrasound criteria predictive of CA.
The goal of this clinical trial is to compare different digital learning methods for teaching basic skills in point-of-care transthoracic echocardiography to medical students. The main question it aims to answer is: • Is a novel digital learning tool, such as a serious video game, non-inferior to traditional ultrasound simulator teaching methods in the context of basic point-of-care transthoracic echocardiography skills training? Participants will train basic point-of-care ultrasound skills using either a traditional basic ultrasound simulator course or the serious video game "Underwater". Both methods focus on training hand-eye coordination, which is particularly important in transthoracic echocardiography. To compare the performance of the participants, a baseline assessment will be performed before and a final assessment after the two-week training period.
This observational study aims to improve the accuracy of the report of the echocardiographic study, making it more consistent with the current international guidelines and reducing the diagnostic mistakes in patients undergoing clinically -indicated echocardiography. The main questions it aims to answer are: - can the addition of automated diagnostic algorithms help to improve the overall accuracy of the echocardiographic report?
The goal of this single-center, prospective, observational study is to validate a software package based on an artificial intelligence algorithm for automated non-invasive estimation of LVFP against invasively measured ones by left and right heart catheterization; In addition, the added value of this new automated software to detect increased LVEDP > 15 mm Hg compared to the current ASE/EACVI algorithm for assessing diastolic dysfunction and longitudinal left atrial strain during the reservoir phase will be evaluated.
This aim of the study is to evaluate the effect of nebulized nitroglycerin on echocardiographic (biventricular function, pulmonary artery pressure, PDA and PFO shunting and tissue doppler imaging) and clinical parameters (Oxygen saturation index, heart rate, blood pressure, mean airway pressure, ventilation setting) in patients with PPHN.
To develop an echocardiography image quality management system based on deep learning to achieve objective and accurate automatic echocardiography image quality control. A total of 2000 patients performing transthoracic echocardiography were prospectively enrolled in the Department of Ultrasound Medicine of the Affiliated Drum Tower Hospital with Medical School of Nanjing University. The data of 8 TTE view segmentations were collected, including the views of the parasternal long axis of the left ventricle (PLAX_LV), parasternal short axis of the large vessel level (PSAX_GV), parasternal short axis of the mitral valve level (PSAX_MV), parasternal short axis of the papillary muscle level (PSAX_PM), parasternal short axis of the apical level (PSAX_AP), apical four cavity (A4C), apical three cavity (A3C), apical two cavity (A2C). The data of 1500 patients were used as the training set, and the rest were used as the validation set. These video data were classified into corresponding view segmentations and analyzed by the Video Swin Transformed Model. Then, the scoring module of different view segmentations combined key frame extraction, image segmentation, video target recognition and video classification model were established. At the same time, the scores achieved by the automatic echocardiography image assessment system were compared with the artificial score. By constantly correcting and learning and eventually building an primary automated grading system. At last, the automatic echocardiography image assessment system was constructed and performed on the rest 500 patients.
The aim of this study is to explore if STI technology, especially TMAD, plays an important role in evaluating left ventricular longitudinal systolic function and discriminating SICM in patients with sepsis. The investigators also intend to prove that TMAD may have predictive value in patients with sepsis, which is worthy of in-depth study to find strong evidence-based medical evidence for subsequent clinical practical applications.
International medical centre Medicor from Slovenia has reported 306 successful percutaneous closures of patent foramen ovale (PFO) from October 2006 till June 2022. The investigators are going to follow-up the participants clinically and with contrast transthoracic echocardiography (TTE) to define the percentage of functional percutaneous closure. The latter is defined with the number (ten or less) of contrast-bubbles in the left atrium during Valsalva maneuver and contrast (agitated saline) application. The clinical follow-up will show the recurrence of embolic events (cerebrovascular insults, transient ischemic attacks) after percutaneous closure. In addition all of the participants are going to be screened for atrial fibrillation. The patients with moderate residual shunts (more than ten bubbles in the left atrium) will then according to the protocol have a transesophageal echocardiogram (TEE) to show the eventual mechanism of the shunt. If the TEE will not show any signs of a residual shunt, the patients will undergo a computed tomography angiogram (CTA) of the pulmonary circulation to exclude arterio-venous fistulas as a cause of the shunt seen on TTE. The investigators will also show the comparison in functional closure between classic and alternative device occluders.
Echocardiography is the main method of bedside examination of neonatal cardiac morphology, which can timely diagnose congenital heart disease and quantitatively assess its severity, but the diagnosis and evaluation process depends on the normal range of neonatal echocardiography.At present, there have been normal reference standards for echocardiography in children and adults at home and abroad, but there is no uniform standard for echocardiographic parameters in newborns, especially premature infants.This study intends to carry out a national multicenter, prospective, observational study to establish the reference range of echocardiography at different time periods after birth in newborns, and stratified according to gestational age, birth weight and gender, to conduct a more accurate hemodynamic assessment of clinically critically ill newborns and guide the treatment of critically ill newborns in real time.
There is high incidence of hypertensive disorders during pregnancy.The maternal cardiovascular system had significant changes during pregnancy. The colloid oncotic pressure is decreased during preeclampsia.