Clinical Research Directory

Use of Liraglutide in Children Aged 6 to 12 Years With Severe Obesity

This randomized controlled trial evaluates the efficacy, safety, metabolic, and cardiovascular effects of liraglutide in children aged 6 to 12 years with severe obesity. Participants are randomized to receive liraglutide plus lifestyle intervention or lifestyle intervention alone for 6 months. In addition to primary outcomes related to weight loss and metabolic improvement, a predefined subgroup analysis evaluates cardiovascular function in participants receiving liraglutide using advanced echocardiographic techniques, including speckle-tracking-derived myocardial deformation parameters.

Diaphragmatic Speckle Tracking During Spontaneous Breathing Trial

Currently, measurement of transdiaphragmatic pressure (Pdi) using oesophageal and gastric balloons is the gold standard for the assessment of diaphragmatic effort. This technique is relatively invasive and its interpretation may be complex. The diaphragmatic longitudinal strain (LSdi) and strain rate (LSRdi) might provide additional information in the assessment of diaphragmatic effort and movement during SBT, allowing early detection of diaphragmatic dysfunction. Patients will be monitored during a 30-120 minutes SBT consisting of no assistance on the ventilator using CPAP with a pressure level of 0 cmH2O. Parameters to evaluate diaphragm function will include diaphragmatic strain (LSdi and LSRdi), diaphragmatic thickening fraction (TFdi), and airway occlusion pressure (ΔP0.1 and ΔPocc). These parameters will be measured immediately before ('baseline') the SBT, as well as 2 minutes ('early' assessment), 15 ('intermediate' assessment) and 30 minutes ('late' assessment) after the beginning of the SBT.

Atrial Strain in Septic Shock

Septic shock is a critical condition associated with high mortality. Transthoracic echocardiography is widely used to evaluate cardiac function and guide treatment. Left and right atrial strain (LAS and RAS) measured via speckle tracking echocardiography have shown prognostic value in cardiovascular diseases. However, differences exist between echocardiographic software, leading to challenges in result comparability. This study aims to compare LAS and RAS measurements between ECHOPAC and UWS software, evaluate AutoStrain technology, and assess reproducibility across observers. The study is non-interventional and will use retrospective echocardiographic data from patients treated for septic shock. The findings will contribute to improving measurement standardization in critically ill patients.