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Single-Port Robotic Cholecystectomy: Early Experience from 8 Cases
( Hyung Jun Kwon ),( Horyon Kong ),( Sang Geol Kim ),( Yun Jin Hwang ) 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: Single-port laparoscopic cholecystectomy (SPLC) is a technical concept to reduced pain and improve cosmetic results when compared to multi-port cholecystectomy. However, SPLC is associated with technical limitation due to the enhanced complexity of the approach and limited number of specialized instruments or platforms. On the other hand, using a robotic platform may overcome these problems and enable more precise surgical actions by increasing freedom of movement and by restoring intuitive instrument control. In this presentation, we report the early clinical experience of our first 8 sing-port robotic cholecystectomy (SPRC) cases. Methods: Between November 2016 and February 2017, eight patients underwent SPRC with the da Vinci Xi robot and single-site instrumentation. We retrospectively reviewed clinical data on those patients. Results: All of 8 patients had completion of SPRC. Seven patients were female and one was male. Average patient age was 43.3±11.8 years and BMI was 22.4±1.4 kg/m2. Three patients (37.5%) were diagnosed with chronic calculous cholecystitis. Three patients (37.5%) underwent operation for polypoid lesions of the gallbladder. One patient (12.5%) was diagnosed with acute calculous cholecystitis. The mean operation time (skin-to-skin) was 83.9±30.7 min, docking time was 13.25±8.1 min, and console time was 42.1±26.4 min. The intraoperative blood loss was negligible. The mean Visual Analog Pain Scale score 6hr after the surgery was 2.9±0.4. The mean length of hospital stay average postoperative hospital stay was 2.3±1.0 day. There were no intraoperative complication and one patient developed seroma on port site. Conclusions: Robotic single-port cholecystectomy appears feasible and safe in our early experience.
Yun Sang Choi,Ko Eun Hwang,Tae Jun Jeong,Young Boong Kim,Ki Hong Jeon,Eun Mi Kim,Jung Min Sung,Hyun Wook Kim,Cheon Jei Kim 한국축산식품학회 2016 한국축산식품학회지 Vol.36 No.1
The effects of five different cooking methods (boiling, steaming, grilling, microwaving, and superheated steaming) on proximate composition, pH, color, cooking loss, textural properties, and sensory characteristics of chicken steak were studied. Moisture content and lightness value (L*-value) were higher in superheated steam cooked chicken steak than that of the other cooking treatments such as boiling, steaming, grilling and microwaving cooking (p0.05). Among the sensory characteristics, tenderness score, juiciness score and overall acceptability score were the highest for the superheated steam samples (p0.05). These results show that marinated chicken steak treated with superheated steam in a preheated 250℃ oven and 380℃ steam for 5 min until core temperature reached 75℃ improved the quality characteristics and sensory properties the best. Therefore, superheated steam was useful to improve cooked chicken steak.
Yun-Sung Lee,Miseon Shim,Ga-Young Choi,Sang Ho Kim,Wansu Lim,Jin-Woo Jeong,Young-Jin Jung,Han-Jeong Hwang 대한의용생체공학회 2023 Biomedical Engineering Letters (BMEL) Vol.13 No.3
Recently, we introduced a current limiter-based novel transcranial direct-current stimulation (tDCS) device that does notgenerate significant tDCS-induced electrical artifacts, thereby facilitating simultaneous electroencephalography (EEG)measurement during tDCS application. In this study, we investigated the neuromodulatory effect of the tDCS device usingresting-state EEG data measured during tDCS application in terms of EEG power spectral densities (PSD) and brainnetwork indices (clustering coefficient and path length). Resting-state EEG data were recorded from 10 healthy subjects during both eyes-open (EO) and eyes-closed (EC)states for each of five different conditions (baseline, sham, post-sham, tDCS, and post-tDCS). In the tDCS condition,tDCS was applied for 12 min with a current intensity of 1.5 mA, whereas tDCS was applied only for the first 30 s in thesham condition. EEG PSD and brain network indices were computed for the alpha frequency band most closely associatedwith resting-state EEG. Both alpha PSD and network indices were found to significantly increase during and after tDCS application comparedto those of the baseline condition in the EO state, but not in the EC state owing to the ceiling effect. Our resultsdemonstrate the neuromodulatory effect of the tDCS device that does not generate significant tDCS-induced electricalartifacts, thereby allowing simultaneous measurement of electrical brain activity. We expect our novel tDCS device to be practically useful in exploring the impact of tDCS on neuromodulation moreprecisely using ongoing EEG data simultaneously measured during tDCS application.
Zoster-associated limb paresis presenting as femoral neuropathy
Hwang, Inha,Yun, UnKyu,Bae, Heewon,Han, Jeong Ho,Ha, Sang-Won,Kim, Doo-eung The Korean Society of Clinical Neurophysiology 2019 Annals of Clinical Neurophysiology Vol.21 No.1
Zoster-associated limb paresis is a relatively uncommon complication of herpes zoster that is characterized by focal motor weakness. Awareness of this disorder is important to avoid unnecessary invasive investigations and to ensure appropriate treatment. We report a case of a herpes zoster involving the femoral nerve.
Hwang, Sue Yun,Kim, Seung Hoon,Hwang, Sung Hee,Cho, Chul Soo,Kim, Ho Youn The Korean Society for Integrative Biology 2001 Korean journal of biological sciences Vol.5 No.2
A key aspect of genomic research in the “post-genome era”is to associate sequence variations with heritable phenotypes. The most common variations in the human genome are single nucleotide polymorphisms (SNPs) that occur approximately once in every 500 to 1,000 bases. Although analyzing the phenotypic outcome of these SNPs is crucial to facilitate large-scale association studies of genetic diseases, detection of SNPs from an extended number of human DNA samples is often difficult, labor-intensive and time-consuming. Recent development in SNP detection methods using DNA microarrays and mass spectrophotometry has allowed automated high throughput analyses, but such equipments are not accessible to many scientists. In this study, we demonstrate that a simple PCR-based method using primers with a mismatched base at the 3'-end provides a fast and easy tool to identify known SNPs from human genomic DNA in a regular molecular biology laboratory. Results from this PCR amplification of specific alleles (PASA) analysis efficiently and accurately typed the Q576R polymorphism of human IL4 receptor from the genomic DNAs of 29 Koreans, including 9 samples whose genotype could not be discerned by the conventiona1 PCR-SSCP (single strand conformation polymorphism) method. Given the increasing attention to disease-associated polymorphisms in genomic research, this alternative technique will be very useful to identify SNPs in large-scale population studies.
Yun-Hae Kim,Jae-Bong Kim,Kwang-il Hwang,Dong-il Seol,Geun-Young Doe,Cheol Oh,Sang-Gu Kim,Se-Ho Park 한국공학교육학회 2010 공학교육연구 Vol.13 No.5
In Korea Maritime University facilities, environment, education and awareness about the Green Campus has been studied in the field. Based on this, domestic and foreign universities and the benchmarking of the environmental characteristics of our university campus environment, the composition of the plan were considered. In this study, based on what our universities have links with the community on what was discussed a lot about. In our university campus tour aimed at young people plan green, and sustainable management measures have been studied.
( Yun Sik Choi ),( Wan Soo Kim ),( Sung Wook Hwang ),( Sang Hyoung Park ),( Dong-hoon Yang ),( Byong Duk Ye ),( Seung-jae Myung ),( Suk-kyun Yang ),( Jeong-sik Byeon ) 대한장연구학회 2020 Intestinal Research Vol.18 No.1
Background/Aims: We aimed to investigate the proportion of and risk factors for residual cancer and/or lymph node metastasis after surgery was performed because of high-risk pathological features in endoscopic resection specimen of suspected superficial submucosal colorectal cancer (SSMC). Methods: We reviewed medical records of 497 patients (58.8±9.8 years, 331 males) undergoing endoscopic resection of suspected SSMC. High-risk pathological features included: deep submucosal cancer invasion ≥1,000 μm; positive lymphovascular and/or perineural invasion; poorly differentiated adenocarcinoma; and positive resection margin. We investigated the occurrence of additional surgery and residual cancer and/or lymph node involvement in the surgical specimen. Results: En bloc resection was performed in 447 patients (89.9%). High-risk pathological features were detected in 372 patients (74.8%). Additional surgery was performed in 336 of 372 patients with high-risk pathological features. Of these, 47 surgical specimens (14.0%) showed residual cancer and/or lymph node metastasis. Piecemeal resection was more common in those with residual cancer and/or lymph node involvement than those without (9/47 [19.1%] vs. 24/289 [8.3%], P=0.032). Positive resection margin was also significantly associated with positive residual cancer and/or lymph node involvement. As the number of high-risk pathological features increased, the risk of regional lymph node metastasis increased proportionally (P=0.002). Conclusions: High-risk pathological features were frequently detected after endoscopic resection of suspected SSMC while residual cancer and/or lymph node metastasis were not commonly present in the additional surgical specimen. Further optimized strategy for proper endoscopic management of suspected SSMC is necessary. (Intest Res 2020;18:96-106)