Clinical Research Directory

Acute Myocardial Infarction Prediction Using Artificial Intelligence Applied to Electrocardiogram Images

The goal of this observational study is to develop and validate an artificial intelligence(AI)-based prediction model for new-onset acute myocardial infarction(AMI) using electrocardiogram(ECG) data. The main question it aims to answer is whether the AI-based ECG accurately forecast new-onset AMI by previous ECG data with 'normal' diagnosis?

Nocturnal Blood Pressure Dipping and Ventricular Repolarization in Hypertension

The primary aim is to determine whether non-dipping status is associated with adverse repolarization markers and impaired myocardial mechanics compared to dipper hypertensive patients. Secondary analyses will compare these findings among resistant vs. non-resistant and controlled vs. uncontrolled hypertensive groups. This study may provide new insights into the prognostic significance of blood pressure dipping patterns in hypertensive patients.

Beneficial or Fostering Future Struggles (B.F.F.s)? Characterizing the Role of Friends in the Development of 13- to 17-Year-Old Adolescents

The goal of this clinical trial is to investigate how the friendship experiences of maltreated (i.e., abused and/or neglected) and non-maltreated adolescents differentially influence their risk for adverse outcomes. The main questions it aims to answer are: 1. How do the friendships of maltreated adolescents differ from those of non-maltreated adolescents? 2. Which friendship experiences influence the associations between maltreatment and ability to regulate stress, as well as future mental health difficulties and revictimization? Participants will: * Attend the initial study visit on the campus of the University of South Carolina with their primary caregiver and a best friend during which they will: * Complete study questionnaires * Be connected to a device that records their physical ability to manage stress * Complete a task during which they will be audio and video recorded and complete a brief assessment rating how they are feeling at different times during task completion * Depending on which research group they are placed in, be assigned to discuss their experience doing this task with their friend (intervention group) or sit quietly in a room for 5 minutes (comparison group) * The follow-up study visit will involve completion of study questionnaires online or via mail 6 months later Additionally, the participant's caregiver and friend will complete study questionnaires. Researchers will compare the intervention group (debriefs with a friend) and comparison group (sits quietly for 5 minutes) to see if the presence of and discussion with the friend influences their physical ability to regulate stress and future outcomes.

Effect of Spinal Anesthesia in Elective Cesarean Cases on Frontal QRS Angle in Anemic and Non-Anemic Patients

The QRS-T angle represents a novel marker of myocardial repolarisation. It is defined as the angle difference between the direction of ventricular depolarisation (QRS wave) and the direction of ventricular repolarisation (T wave). It is an indicator of instability in the electrophysiological properties of the myocardium and is associated with arrhythmias. The frontal QRS-T angle is a straightforward, cost-effective parameter that can be readily obtained from 12-lead electrocardiography. The most prevalent arrhythmias during pregnancy are atrial arrhythmias. However, ventricular tachyarrhythmias are exceedingly rare during pregnancy and may be life-threatening. Caesarean section is one of the most common surgical procedures. General anaesthesia, spinal anaesthesia and epidural anaesthesia can be employed in these patients. Spinal anaesthesia is a frequently employed method in caesarean section operations due to its rapid onset of effect, technical simplicity of application and higher probability of success. In pregnant women, anaemia is defined as a haemoglobin concentration below 11 mg/dL in the first trimester, 11 mg/dL in the second trimester and 10.5 mg/dL in the third trimester.