Publications by authors named "Heean Shin"
Photoplethysmogram (PPG) performs an important role in alarming atrial fibrillation (AF). While the importance of PPG is emphasized, there is insufficient amount of openly available atrial fibrillation PPG data. We propose a U-net-based generative adversarial network (GAN) which synthesize PPG from paired electrocardiogram (ECG).
View Article and Find Full Text PDFObjectives: This study evaluated suture tie-down forces and cyclic contractile forces (CCFs) after undersized tricuspid annuloplasty using a hybrid band.
Methods: Downsized tricuspid annuloplasty was planned in adult male sheep using 8 force transducers attached from the septal to the anterior annular areas of the ring (segments 1 and 2, flexible septal; segments 3 and 4, semi-rigid posterior; segments 5 and 6, semi-rigid anterior; segments 7 and 8, flexible anterior). CCFs were analysed at 3 different levels of peak right ventricular pressure (RVP): 30, 50 and 70 mmHg.
Article Synopsis
- - Mechanical circulatory support systems (MCSSs) are essential for heart transplant patients, necessitating precise flow rate measurements to prevent emergencies from abnormal blood flow.
- - The paper introduces a new ultrasonic blood flowmeter (UFM) that utilizes a novel algorithm called Xero, which combines benefits from traditional cross-correlation and zero-crossing algorithms while focusing on zero-crossing.
- - Testing shows that the Xero algorithm significantly outperforms traditional methods, achieving an error rate of 0.92% and demonstrating greater robustness in varying temperatures and responsiveness to rapid flow changes, making it highly suitable for use in MCSSs.
Objectives: This study was conducted to measure suture tie-down forces and evaluate cyclic contractile forces (CCFs) in beating hearts after undersized 3-dimensional (3D) rigid-ring tricuspid valve annuloplasty (TAP).
Methods: Eight force transducers were attached to the 3D rigid TAP ring. Segments 1 to 8 were attached from the mid-septal to anterior-septal commissural area in a counterclockwise order.
Article Synopsis
- Hematological analysis is crucial for patients with mechanical circulatory support (MCS), but traditional lab methods can be slow and unsafe for workers due to toxic substances.
- A new point-of-care device has been developed to measure plasma free hemoglobin (PFHb) and hematocrit (Hct) using colorimetry, which includes a camera, centrifuge system, and custom software.
- This device provides accurate measurements with high correlation to standard lab methods, offering results in about 5 minutes compared to around 1 hour in clinical settings, making it a practical tool for immediate patient care.