Yonsei University · Medicine
Professor Sung Oh Hwang's research lab specializes in biomedical engineering and low-power signal processing, focusing on optimizing cardiopulmonary resuscitation (CPR) techniques and developing energy-efficient digital filter architectures. The lab investigates hemodynamic responses during CPR to improve resuscitation outcomes, particularly in ventricular fibrillation models, while also advancing low-power FIR filter designs using innovative arithmetic algorithms. Their work bridges clinical cardiology and electronic system design, aiming to enhance both patient survival and the efficiency of implantable or wearable medical devices. The lab’s interdisciplinary approach integrates physiology, engineering, and computational modeling to address critical challenges in emergency care and embedded systems.
Figures are computed from collected data and may differ slightly.
The outflow of the left ventricle is affected during standard CPR, resulting in varying degrees of narrowing in the LVOT and/or the aortic root.
This letter proposes a new distributed arithmetic (DA) algorithm for low-power finite-impulse response (FIR) filter implementation. The characteristic of the proposed algorithm is that the FIR filters using the proposed algorithm do not need to employ two's complement representation in lookup tables as well as multiply-and-accumulation blocks. Thus, the proposed algorithm can minimize the dynamic power consumption of the FIR filters. The experimental results show that the lowpass FIR filter usin
The decreasing effect of wrinkle on the pressure sensitive adhesive hydrogel patches containing ulmi cortex extract and sorbitol as the drug for anti-wrinkle were investigated. In this study, hydrogels were prepared by the crosslinking reaction of acrylic polymers and aluminum ions produced by L(+)-tartaric acid hydrolysis of the dihydroxy aluminum aminoacetates. The inhibition concentration of ulmi cortex extract on the collagenase exhibited at 0.01%. Furthermore, the moisturizing effect of hyd
In a canine model of witnessed VF using a simulated scenario, CPR with three CV ratios, 15:1, 15:2, and 30:2, did not result in any differences in hemodynamics, arterial oxygen profiles, and resuscitation outcome among the three groups. CPR with a CV ratio of 15:1 provided comparable chest compressions and shorter pauses for ventilation between each cycle compared to a CV ratio of 30:2.
www.cris.nih.go.kr, cris.nih.go.kr number, KCT0000231).
Determining the cause of cardiac arrest (CA) and the heart status during CA is crucial for its treatment. Transesophageal echocardiography (TEE) is an imaging method that facilitates close observation of the heart without interfering with cardiopulmonary resuscitation (CPR). Intra-arrest TEE is a point-of-care ultrasound technique that is used during CPR. Intra-arrest TEE is performed to diagnose the cause of CA, determine the presence of cardiac contraction, evaluate the quality of CPR, assist
Open papers in the app to read, cite, and organize with AI.
