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The effect of posture and repetition on urodynamic parameters: A prospective randomized study
전호준,추민수,오승준 대한비뇨의학회 2017 Investigative and Clinical Urology Vol.58 No.1
Purpose: To evaluate the effect of posture and repetition of filling cystometry on urodynamic parameters. Materials and Methods: Seventy-one men with benign prostatic hyperplasia participated in a urodynamic study between September 2015 and August 2016 and were randomly assigned to a supine to supine (group SS, n=16), erect to erect (group EE, n=16), supine to erect (group SE, n=19) or erect to supine (group ES, n=20) group. The patients underwent filling cystometry twice. We evaluated the effect of posture and the effect of repetition on filling cystometric parameters. We also evaluated the correlation between overactive bladder (OAB) and detrusor overactivity (DO) and between maximum voided volume (MVV) and maximum cystometric capacity (MCC) for each posture and filling cystometry time. Results: There was a decrease in bladder sensation and occurrence of DO, and an increase in bladder compliance and MCC in the supine posture group compared to that in the erect posture group. A more significant decrease in bladder sensation and occurrence of DO as well as an increase in MCC was seen during the second filling cystometry than the first one. The supine posture during first filling cystometry showed a better correlation between OAB and DO and between MVV and MCC than erect posture. Conclusions: There were clear effects of posture and filling cystometry repetition on urodynamic parameters. The supine posture and repeated filling cystometry caused the bladder to be less sensitive and less overactive. The supine posture showed a better correlation to OAB symptoms than erect posture during first filling cystometry.
전호준,윤석환,최은정,강동구,박근호,김동윤,진송완,심진형,윤원수,박종봉 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.79 No.-
Here, we fabricated composite scaffolds consisting of poly e-caprolactone (PCL) and silanated silicaparticles and evaluated the performance of these composite scaffolds as suitable alternatives for bonetissue regeneration including their physical properties (tensile modulus, wettability, and surfaceroughness) and biological properties (cell proliferation, osteogenic differentiation, Q-PCR, westernblotting, and migration assay), by culturing human mesenchymal stem cells. PCL/silanated silica scaffoldshad outstanding physical characteristics and biological properties including cell proliferation, osteogenicdifferentiation, and osteoinduction. This silanated-silica composite has a strong potential as a biomaterialand can be applied to bone tissue applications.
전호준,김근형 한국물리학회 2013 Current Applied Physics Vol.13 No.9
We propose a new electric field-induced micro/nanocasting method to replicate soft patterns using micro/nanocasting techniques without pressure. The process uses an alternating current (AC) electrical field and rotation of one electrode, generating a dynamic electrical field that induces electrokinetic flow motion in a dielectric solution (polydimethylsilane, PDMS).We used a lotus leaf as a replication template and characterised the PDMS flow motion to observe the effects of various process parameters (e.g.,electrical field strength, rotation speed of an electrode, and electrode shape). The unstable flow motion was significantly dependent on the processing parameters, especially the rotation speed of the electrode. Using the optimised processing conditions, the replication efficiency was about 88%. We believe that this method has potential for fabricating soft micro/nanosized structures.