1.The effect of valvuloplasty in the treatment of primary varicose vein
Woo Hyung KWON ; Byung Soo DO ; Bo Yang SEO ; Kwing Bo KWON
Journal of the Korean Society for Vascular Surgery 1993;9(1):104-111
No abstract available.
Varicose Veins
2.A Clinical Study on Nonunion of the Forearm Fracture
Key Yong KIM ; Jai Gon SEO ; Hyung Ku YOON ; Tae Woo KWON
The Journal of the Korean Orthopaedic Association 1987;22(3):749-755
Nonunion is one of the important complication during treatment of forearm fracture. Nonunion of the forearm fracture inevitably prolongs the treatment course and markedly impairs the function of the forearm. We analyzed 34 cases of nonunion of forearm fracture in 21 persons from Jan. 1979 to Dec. 1985. The results are as follows. 1. The greater force of traffic accident of machine injury produced nonunion more frequently. 2. The predilection site of the nonunion was coincidental to the fracture site of the forearm. 3. Unstable fracture such as comminuted, segmental, spiral or oblique fracture was more closely related to the nonunion than the stable fracture. Hypervascular type nonunion was more prevalent than the avascular type. 4. The probable causes of nonunion were poor external fixation, severe soft tissue injury, displaced or comminuted fracture and inadequate or inappropriate surgery. 5. Obtained bone union in all cases, but the functional result was not improved compared to the preoperative state.
Accidents, Traffic
;
Clinical Study
;
Forearm
;
Fractures, Comminuted
;
Humans
;
Soft Tissue Injuries
3.Four-port Vitrectomy in Rhegmatogenous Retinal Detachment
Jeong Woo HEO ; Yoon Hyung KWON
Journal of the Korean Ophthalmological Society 2023;64(6):498-506
Purpose:
The study investigated the results of direct surgical scleral depression using four ports and the chandelier lighting system in rhegmatogenous retinal detachment.
Methods:
Anatomical and functional success rates and complications were analyzed in 179 eyes diagnosed with rhegmatogenous retinal detachment that underwent primary vitrectomy using four ports at our hospital between March 2012 and February 2022.
Results:
A total of 168 (93.9%) eyes had anatomical success without reoperation while 11 (6.1%) developed recurrence. However, the final success rate was 100%. The best-corrected visual acuity improved significantly from logarithm of the minimum angle of resolution (logMAR) 1.03 ± 0.92 to logMAR 0.24 ± 0.39 after surgery (p < 0.001). Complications included a temporary increase in the intraocular pressure (n = 3, 1.7%), leakage through the scleral incision (n = 2, 1.1%), hyphema and vitreous hemorrhage (n = 10, 5.6%), and iatrogenic retinal break (n = 1, 0.6%), but these improved after treatment.
Conclusions
Four-port vitrectomy for rhegmatogenous retinal detachment in which scleral depression is directly performed using the chandelier lighting system is a useful surgical method. It allows effective visualization of the peripheral retina regardless of the assistant’s proficiency which results in a more meticulous surgery. The anatomical and functional results of this technique were similar to the conventional technique.
4.Bacteremia Following Endoscopic Injection Sclerotherapy of Esophageal Varices.
Kyung Soon KWON ; Jong Hoa CHOI ; Hyung Woo LEE ; Myung Soo HYUN ; Moon Kwan CHUNG ; Hyun Woo LEE
Korean Journal of Gastrointestinal Endoscopy 1990;10(1):27-32
The incidence of transient bacteremia following esophageal variceal sclerotherapy (EVS) was evaluated in 29 patients. These 29 patients underwent a total of 83 sclerotherapy sessions.Prior to EVS, all instruments were sterilized. Blood cultures were drawn pre-EVS and post-EVS.All pre-EVS and post-EVS blood cultures were negative. In conclusion, it was found bacteremia following sclerotherapy is not easily developed, if a vigorous approach of using well cleaned equipment is used. Unless there is a cardiac prothesis or valvular heart disease, antibiotic prophylaxis is not warranted.
Antibiotic Prophylaxis
;
Bacteremia*
;
Esophageal and Gastric Varices*
;
Heart Valve Diseases
;
Humans
;
Incidence
;
Sclerotherapy*
5.Clinical Outcomes of Indocyanine Green-Assisted Peeling of the Internal Limiting Membrane in Epiretinal Membrane Surgery.
Woo Seok CHOI ; Woo Jin JEONG ; Yoon Hyung KWON
Journal of the Korean Ophthalmological Society 2016;57(3):445-452
PURPOSE: In this study we compared the clinical outcomes of idiopathic epiretinal membrane (ERM) surgery according to the use of indocyanine green (ICG) and ICG exposure time. METHODS: The medical records of 76 patients with an idiopathic ERM that underwent vitrectomy and ERM and internal limiting membrane (ILM) removal were reviewed. We compared the results (best corrected visual acuity [BCVA, log MAR] and central macular thickness [CMT, µm]) of idiopathic ERM surgeries using ILM peeling with (group I, 39 eyes) and without ICG (group II, 37 eyes). Additionally, the correlation of ICG exposure time and clinical outcomes in group I was analyzed. RESULTS: Gender, age, lens state, preoperative BCVA, and preoperative CMT were not significantly different between the two groups. The postoperative BCVA was significantly improved in both groups but the difference was not statistically significant. The postoperative CMT was significantly improved in both groups and the change amount of group I was more larger than group II. Additionally, ICG exposure time was not significantly correlated with changes of BCVA and CMT. CONCLUSIONS: Intravitreal ICG-assisted ILM peeling did not significantly affect the recovery of BCVA, however that impaired the recovery of CMT. ICG exposure time did not affect the postoperative visual outcome.
Epiretinal Membrane*
;
Humans
;
Indocyanine Green
;
Medical Records
;
Membranes*
;
Visual Acuity
;
Vitrectomy
6.Expression of p58 in Fetal Thymocytes and Fetal Liver Lymphocytes.
Joo Deuk KIM ; In Hong CHOI ; Jeon Soo SHIN ; Se Jong KIM ; Dae Ho KWON ; Hyung Woo PARK ; Eui Cheol SHIN
Korean Journal of Immunology 1998;20(1):17-24
Bipotent progenitors for T and natural killer (NK) lymphocytes are thought to exist among early precursor thymocytes or liver lymphocytes. The identification of such a progenitor population or mature NK cells in such organs remains undefined. Here we report the identification of a novel receptor of NK cells, p58 (HLA class I-specific inhibitory receptors), in fetal thymocytes and fetal liver lymphocytes. Our finding suggests the NK cells mature in the developmental stage during feta1 ontogeny. Flow cytometric analysis revealed p58 positive cells in thymocytes or in fetal liver lymphocytes and reverse transcription PCR also showed amplification of p58 RNA. The result of single stranded conformational polymorphism (SSCP) showed it discriminates one or two base pair differences of the p58 gene. Although the question still remains as to whether the expression of p58 is due to the NK cells or natural T cells, it is clear the p58 is expressed in fetal thymocytes or liver lymphocytes. And SSCP analysis using appropriate sets of primers used in this study, is helpful to study the diversity of p58.
Base Pairing
;
Killer Cells, Natural
;
Liver*
;
Lymphocytes*
;
Polymerase Chain Reaction
;
Polymorphism, Single-Stranded Conformational
;
Reverse Transcription
;
RNA
;
T-Lymphocytes
;
Thymocytes*
7.Preoperative Factors Affecting the Visual Outcome after Vitrectomy in Rhegmatogenous Retinal Detachment.
Hyun Uk SHIN ; Woo Seok CHOI ; Yoon Hyung KWON
Journal of the Korean Ophthalmological Society 2016;57(9):1378-1385
PURPOSE: To investigate the preoperative factors affecting the visual outcome after a vitrectomy in a rhegmatogenous retinal detachment (RRD). METHODS: A retrospective study of 79 eyes was carried out. The 41 eyes were macula-off RRD (group I), the 38 eyes were macula-on RRD (group II). The preoperative factors examined in this study included the preoperative best corrected visual acuity (BCVA), age, the duration of macular detachment, the extent of the detached retina, the delay of operation. The correlation between these factors and the postoperative 6 months BCVA were investigated. RESULTS: In group I, preoperative BCVA (r = 0.313, p = 0.037) and preoperative retinal detachment (RD) extent (r = 0.483, p = 0.001) were significantly correlated with postoperative 6 months BCVA. In group II, preoperative BCVA and preoperative RD extent were not significantly correlated with postoperative 6 months BCVA. Regardless of including macula, the patient's age, duration of symptom and delay of operation after clinic visit were not affected to the visual outcome. Patients with symptom duration of 7 days or less achieved better final BCVA (0.36 ± 0.45 log MAR, n = 29) than patients with longer symptom duration (0.79 ± 0.55 log MAR, n = 16) (p = 0.008). CONCLUSIONS: After vitrectomy for macula-off RRD, the factors related to favorable visual outcome were the better preoperative BCVA, the less extent of the detached retina. And surgical repair within 7 days of the symptom onset yielded better visual outcomes. Otherwise, in macula-on RRD, preoperative BCVA, age, the duration of retinal detachment, the extent of the detached retina, the delay of operation did not impact on visual outcome.
Ambulatory Care
;
Humans
;
Retina
;
Retinal Detachment*
;
Retinaldehyde*
;
Retrospective Studies
;
Visual Acuity
;
Vitrectomy*
8.Expression of Green Fluorescent Protein in Both Spodoptera frugiperda Cells and Bombyx mori Larvae by Ac-Bm Hybrid Virus.
Byung Rae JIN ; Hyung Joo YOON ; Eun Young YUN ; Seok Woo KANG ; Eun Sook CHO ; Seok Kwon KANG
Journal of the Korean Society of Virology 1998;28(3):225-232
We have expressed GFP in Sf9 and Bm5 cells or Bombyx by larvae by using Ac-Bm hybrid virus capable of replicating in both Bm5 and Sf9 cells. Genomic DNA of Ac-Bm hybrid virus expressing P-galactosidase was cotransfected with baculovirus transfer vector containing GFP gene, pBacPAK-GFP in Sf9 cells. The Ac-Bm hybrid virus harboring GFP was named as Ac-Bm hybrid virus-GFP. The Ac-Bm hybrid virus-GFP-infected insect cells were easily selected by detecting the emission of GFP from each well of cell culture dish on the UV illuminator. GFP produced by Ac-Bm hybrid virus-GFP in Sf9 and Bm5 cells or B. mori larvae was confirmed by SDS-PAGE and Western blot analysis using GFP antibody. In addition, B. mori larvae infected with Ac-Bm hybrid virus-GFP was apparently appeared fluorescence from the whole body at 5 days postinoculation. The fluorescence of GFP from the hemolymph and fat body of B. mori larvae infected with Ac-Bm hybrid virus-GFP was also observed by fluorescence microscope. In conclusion, our results demonstrated that in baculovirus expression vector system, use of Ac-Bm hybrid virus have an additional advantage of expanded host range for producing recombinant proteins.
Animals
;
Baculoviridae
;
Blotting, Western
;
Bombyx*
;
Cell Culture Techniques
;
DNA
;
Electrophoresis, Polyacrylamide Gel
;
Fat Body
;
Fluorescence
;
Hemolymph
;
Host Specificity
;
Insects
;
Larva*
;
Recombinant Proteins
;
Sf9 Cells
;
Spodoptera*
9.Full mouth prosthetic rehabilitation based on systemic analysis, diagnosis and treatment plan: a case report.
Sooyeon KWON ; Janghyun PAEK ; Ahran PAE ; Yi Hyung WOO
The Journal of Korean Academy of Prosthodontics 2013;51(4):332-338
Data collection including checking the problem list and analyzing the etiology cannot be overemphasized in full mouth rehabilitation cases. It is well reported that favorable prognosis of prosthodontic treatment depends on accurate diagnosis. Seventy seven year old female patient presented with chief complaints of chewing pain on maxillary and mandibular left premolars and unesthetic existing prosthesis. Clinical evaluation, radiographic examination and cast analysis were performed to gather comprehensive data and problem lists. Treatment planning was based on collected data and related articles. Abutment evaluation, prognosis depending on various types of prosthesis, and maintenance were considered as well. Occlusal vertical dimension was increased to solve esthetic dissatisfaction and insufficient interocclusal space. Patient adaptation was verified with provisional restorations followed by diagnostic wax up. Function, esthetics and occlusal stability were verified during 8 week follow-up period. Prosthodontic reconstruction based on systemic analysis, diagnosis, and treatment plan led to satisfactory result after delivery of definitive prosthesis.
Bicuspid
;
Data Collection
;
Esthetics
;
Female
;
Follow-Up Studies
;
Humans
;
Mastication
;
Mouth Rehabilitation
;
Mouth*
;
Prognosis
;
Prostheses and Implants
;
Prosthodontics
;
Vertical Dimension
10.A Case of Juvenile Pityriasis Rubra Pilaris Clinically Improved with Cyclosporine.
Hyunseok CHOI ; Sung Soo HAN ; Hyung Kwon PARK ; Jung Woo LEE ; Hee Joon YU ; Joung Soo KIM
Korean Journal of Dermatology 2017;55(5):318-319
No abstract available.
Cyclosporine*
;
Pityriasis Rubra Pilaris*
;
Pityriasis*