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NCT ID: NCT06266234 Recruiting - Infantile Spasm Clinical Trials

Characterization by Automated System on Infantile Spasmes

REASSESS
Start date: February 1, 2024
Phase:
Study type: Observational

Infantile spasms are defined by the occurrence of epileptic episodes characterized by the appearance of very specific motor seizures, made up of rapid, repeated contractions in flexion or extension known as spasms. This syndrome is of high concern as it will lead to mental retardation if it is not early identified and treated. Most often, spasms are characterized by sudden contractions of the body in flexion. More rarely, spasms occur in extension: the neck and legs suddenly tense, and the arms move upwards or sideways. Spasms may be accompanied by eye revulsion. They are brief, lasting 0.5 to 2 seconds each. At the start of the attack, they may be isolated, but then may occur in series lasting up to several tens of minutes. Because of its nature and duration, infantile spasm is often difficult to identify and is often confused with benign motor manifestations in children, such as hiccups or muscular jerks. This difficulty often leads to delays in diagnosis. Indeed, patients are often seen at the stage when cognitive regression has set in. The gold standard for diagnosing infantile spasms is to capture them on video-EEG to confirm the ictal correlate of the seizure. Although multiple variations are known, the ictal correlation is often a diffuse slow wave of high amplitude with subsequent electrodecrement. Yet continuous video electroencephalogram is an expensive and time-consuming resource often unavailable in developing countries and in many parts of the developed world. Furthermore, in an appropriate clinical scenario, continuous video-EEG may be unnecessary. For example, a home video examination with typical spasms combined with a definitively epileptic ambulatory EEG may certainly be adequate for the diagnosis of infantile spasms As part of Mr. Diop's thesis, the study team have developed a system for analyzing videos acquired in 2 dimensions from a simple smartphone or webcam and highlighting the existence of spasms in a child. The principle is to use computer vision and computer learning model to identify the spasms from these videos. The first prototype of this system achieved a positive predictive value of 77%, which is very good considering the small sample used (< 100) but quite insufficient to obtain a diagnostic prediction for medical use, for which we hope for sensitivity and specificity of around 95%. The aim is to achieve a sensitivity and specificity of over 95% so that we can offer this detection system to healthcare professionals and parents of children who do not have rapid access to diagnosis. The aim is to develop a system enabling broad screening at the population level so that identified children can be more rapidly directed towards the healthcare system and appropriate treatment for their disease. To achieve this goal, we need access to a standardized reference database that currently exists in the various pediatric electrophysiology laboratories of the Assistance Publique - Hôpitaux de Paris and the Île-de-France region. we propose using the films stored in these laboratories to teach the computer to recognize spasms that have already been formally identified by electrophysiologists and by ictal concordance.

NCT ID: NCT06266039 Recruiting - Addiction Opiate Clinical Trials

Introduction of Long Acting Buprenorphine in France

OBAP
Start date: March 31, 2023
Phase:
Study type: Observational

The current available pharmacological treatment formulations (i.e., daily formulations of buprenorphine or methadone) for OUD in France may have several inconveniences, such as: compliance, burden of daily intake, and risk of misuse; that may hinder their effectiveness. Long acting formulations of buprenorphine (LAB) such as Buvidal have been developed to favor retention and compliance and minimize the risk of diversion. Previous studies are promising on the advantage of LAB to treat opioid addiction, however more evidence is needed in the French healthcare context. However, in addition to randomized clinical trials, the French National Healthcare Agency (HAS "Haute Autorité de Santé") recommends conducting "real-life" studies (i.e., in naturalistic conditions) during the development of a medication and the use of "Patient Reported Outcome Measures" (PROMs) to analyze patient quality of life and/or other measures relevant to patients (e.g., severity, efficiency), without interpretation of the answers by a health professional. In this regard, our study proposes to use the Addiction Severity Index (ASI) self-report questions and several scales on treatment satisfaction and quality of life to collect the patient's opinion of perceived changes following the use of Buvidal. Main objectives: The objectives of this prospective open observational study, in naturalistic conditions, are to examine in individuals with an opioid use disorder, over a period of 6 months after LAB treatment initiation: the change in substance addiction severity and the changes in health-related quality of life, craving, opioids and other substance and non-substance uses and misuses, alcohol, tobacco and non-substance addiction severity, satisfaction with LAB treatment, severity of others domains related to addiction severity (i.e., medical, social, psychological) and psychiatric comorbidities Main hypotheses: 1. Hypothesize was that LAB will be associated with a stable (if prior remission) or a reduction of the CS of "Drug use" (i.e., substance addiction severity) at 6 months compared to baseline. 2. Hypothesize was that LAB will be associated with a stable (if prior remission) or a reduction of opioids and other substance and non-substance uses and misuses, other substances and non-substances addiction severity, craving, severity of others domains related to addiction (i.e., medical status, employment and support, family/social status, psychological status), an improvement of quality of life and a good satisfaction with treatment at follow-ups compared to baseline.

NCT ID: NCT06265987 Completed - Ultrasonography Clinical Trials

Maternal and Fetal Characteristics Influencing Image Quality in Prenatal Ultrasonography

Start date: August 1, 2023
Phase:
Study type: Observational

The objective of this observational study is to identify maternal and fetal characteristics that impact image quality in prenatal ultrasonography. The investigators have assembled a retrospective cohort of 198 patients, each contributing three ultrasound images taken between 18 and 18 weeks and 6 days of gestation. For each image, the investigators assess the quality of two distinct elements as well as the overall image through both subjective and objective evaluations. The primary questions the study seeks to address are: What maternal and fetal characteristics influence image quality in prenatal ultrasonography?

NCT ID: NCT06265974 Completed - Ultrasonography Clinical Trials

Evaluation of Image Quality in Obstetrical Ultrasonography: Comparison Between Subjective Assessment and Contrast-to-noise Ratio

Start date: August 1, 2023
Phase:
Study type: Observational

The goal of this observational study is to determine whether the subjective assessment of the quality of obstetrical ultrasonography pictures can be similar to that of an objective tool. The main question it aims to answer is: Is the subjective assessment of the quality of obstetrical ultrasonography pictures by a young practitioner and an experienced one can be similar to that of an objective tool, such as the contrast-to-noise ratio (CNR)? The contrast-to-noise ratio is commonly used in radiology to evaluate image quality by assessing the ability to distinguish differences between two elements. The investigators selected a retrospective cohort of 198 patients, including three pictures per fetus screened between 18 and 18 weeks and 6 days. For each picture, the investigators assessed the quality of two different elements and the entire image, and then calculated the CNR using software. The investigators will compare the three assessment between them

NCT ID: NCT06265740 Not yet recruiting - Premature Birth Clinical Trials

Early Diagnosis of Premature Births by Analysis of the Vaginal Microbiota

PREMABIOTE
Start date: March 2024
Phase: N/A
Study type: Interventional

Objectives: to assess the relevance of the "RiboTaxa" algorithm coupled with neural network learning based on analysis of vaginal microbiota metagenomic sequencing data for predicting prematurity in an identified at-risk population. Study description: Longitudinal follow-up of a cohort of pregnant women, with collection of biological samples, and a posteriori case-control comparison based on the occurrence of an event (premature birth).

NCT ID: NCT06265558 Not yet recruiting - Breast Cancer Clinical Trials

Prevention of Postoperative Complications by Negative Pressure Therapy After Complex Breast Cancer Surgery

TPN-SEIN
Start date: September 2024
Phase: N/A
Study type: Interventional

There is little scientific data concerning the use of negative pressure therapy after immediate breast reconstruction. That strategy of treatment-reconstruction has expanded increasingly since the last years. The current literature reports only 3 studies on the use of preventive negative pressure therapy in oncologic breast surgery. Moreover, all three are retrospective, case-control studies with serious limitations. The largest published series reports a reduction in the overall complication rate from 15.9% to 8.5%, and a significant reduction in several criteria: infection, scar dehiscence and necrosis. However, the study presents significant biases, with non-comparable populations in terms of comorbidities, surgical procedure performed, inclusion periods (and therefore experience in performing oncological surgery). There was also a high probability of under-assessment or postponement of post-operative complications, which is typical of published retrospective surgical studies. The published results therefore strongly encourage further investigation of negative pressure therapy in oncological breast surgery.

NCT ID: NCT06265298 Not yet recruiting - Clinical trials for Limbal Stem Cell Deficiency

Implementation of a Protocol for the Transdifferentiation of Buccal Mucosal Epithelium Into Corneal Epithelium

TransBuCor
Start date: February 2024
Phase: N/A
Study type: Interventional

Objectives The transparent surface of the eye, called the cornea, plays a crucial role in transmitting light to the retina and in protecting the eye. On its external surface, the cornea is composed of a constantly renewing multistratified epithelium. This mechanism is fueled by stem cells located in the limbus (the transition zone between the cornea and the sclera). Limbal Stem Cell Deficiency (LSCD) is characterized by a decrease or cessation of epithelial renewal and neovascularization of the cornea. Consequently, the cornea loses its integrity and transparency. This visually impairing condition is currently in a therapeutic impasse as only autologous limbal or allogeneic corneal grafts are viable options, but they pose significant risks to patients. Studies have shown that the oral cavity contains stem cells that can be isolated, cultured, and transdifferentiated into limbal stem cells (LSCs). However, to date, these studies are limited, and no protocol has been validated. In this study, the advantage of the accessibility of the oral cavity is used to develop a protocol for differentiating cells from the oral mucosa into limbal stem cells (LSCs) for use in a future clinical trial with patients. Methodology This prospective monocentric study will be conducted on patients from the ophthalmology department of the Montpellier University Hospital who have an indication for conjunctival reconstruction. After obtaining consent from the patients, cells from the oral wall will be sent to the tissue bank of the Montpellier University Hospital, where they will be cultured. Finally, the transdifferentiation steps will be analyzed by the "Eye" research team at the Institute of Neuroscience in Montpellier, which is collaborating on the project. The investigators have established objective factors to assess the success of the developed protocol based on the literature : (i) > 3% of stem cells in primary cultures, (ii) <10% aborted colonies, (iii) Expression of LSC markers (Pax6, Krt14, p63).

NCT ID: NCT06264284 Completed - Clinical trials for Anesthesia Complication

Emergency (Red Code) Cesarean Section : Maternal and Fetal Prognosis Depending on Anesthetic Modalities in a Level 3 Maternity Ward

Start date: July 19, 2018
Phase:
Study type: Observational

We try to evaluate whether the type of anesthesia used influences the occurrence of perioperative maternal complications as well as neonatal outcome on emergency (Red Code) Cesarean Section. This study occurred in a Level 3 Maternity Ward.

NCT ID: NCT06264245 Not yet recruiting - Auditory Perception Clinical Trials

Users of Remote Conferencing and Compression of Sound Dynamics : Auditory Effects

COMPRESSED
Start date: June 2024
Phase:
Study type: Observational

The COMPRESSED project is a descriptive, bi-centric and non-invasive study carried out by the CERIAH - IDA - Institut Pasteur and the Haute École Léonard de Vinci in Brussels on volunteer participants identified in two groups : - be subject to high exposure to compressed sound, as defined by professional participation in events on broadcast platforms using sound signal processing systems, over the last 3 years, - be subject to moderate or limited exposure to compressed and manipulated sound, equivalent to that of a student following certain distance learning courses. on a videoconferencing platform, alternating with other face-to-face courses, with the ability to listen during breaks, which have been taught for a maximum of 2 years. The main objective of the COMPRESSED study is to evaluate the auditory effects of exposure to manipulated sounds (compression, filtering, equalisation, accentuation, etc.) from sound distribution platforms on the auditory system of participants who are regularly exposed to these sounds as a result of their professional activity.

NCT ID: NCT06263946 Recruiting - Myopia Clinical Trials

Essilor® Stellest® Lenses Multicentre European Study (SLOMES)

SLOMES
Start date: March 22, 2024
Phase: N/A
Study type: Interventional

The goal of this post-market clinical follow up Study is to demonstrate the efficacy, safety, acceptability, and quality of life implications of Essilor® Stellest® spectacle lenses in slowing myopia progression in European children and adolescents. Participants will receive Essilor® Stellest® at inclusion visit and will be asked for a full time wear (>12 hours daily) for 24 months. The primary endpoints are the change in axial length and cycloplegic autorefraction from baseline to 24 months compared to expected change based on axial length and refraction centile positions at baseline.