1.The treatments of segmental fractures of femoral shaft.
Chang Uk CHOI ; Jae Uk KWON ; Hee KWON ; Seung Ryeol YOON
The Journal of the Korean Orthopaedic Association 1992;27(1):139-147
No abstract available.
2.Contact dermatitis due to Bentos@ ophthalmic solution.
Tae Jin CHUN ; Heung Ryeol CHOI ; Chang Kwon HONG ; Byung In RO
Korean Journal of Dermatology 1991;29(6):813-816
No abstract available.
Dermatitis, Contact*
3.A clinical study of segmental tibial fracture.
Chang Uk CHOI ; Jae Uk KWON ; Man Sik YANG ; Kwang Kon KO ; Seung Ryeol YOON
The Journal of the Korean Orthopaedic Association 1992;27(1):148-157
No abstract available.
Tibial Fractures*
4.Evaluation of the accuracy of two different surgical guides in dental implantology: stereolithography fabricated vs. positioning device fabricated surgical guides.
Chang Ryeol KWON ; Byung Ho CHOI ; Seung Mi JEONG ; Sang Dong JOO
The Journal of Korean Academy of Prosthodontics 2012;50(4):271-278
PURPOSE: Recently implant surgical guides were used for accurate and atraumatic operation. In this study, the accuracy of two different types of surgical guides, positioning device fabricated and stereolithography fabricated surgical guides, were evaluated in four different types of tooth loss models. MATERIALS AND METHODS: Surgical guides were fabricated with stereolithography and positioning device respectively. Implants were placed on 40 models using the two different types of surgical guides. The fitness of the surgical guides was evaluated by measuring the gap between the surgical guide and the model. The accuracy of surgical guide was evaluated on a pre- and post-surgical CT image fusion. RESULTS: The gap between the surgical guide and the model was 1.4 +/- 0.3 mm and 0.4 +/- 0.3 mm for the stereolithography and positioning device surgical guide, respectively. The stereolithography showed mesiodistal angular deviation of 3.9 +/- 1.6degrees, buccolingual angular deviation of 2.7 +/- 1.5degrees and vertical deviation of 1.9 +/- 0.9 mm, whereas the positioning device showed mesiodistal angular deviation of 0.7 +/- 0.3degrees, buccolingual angular deviation of 0.3 +/- 0.2degrees and vertical deviation of 0.4 +/- 0.2 mm. The differences were statistically significant between the two groups (P<.05). CONCLUSION: The laboratory fabricated surgical guides using a positioning device allow implant placement more accurately than the stereolithography surgical guides in dental clinic.
Dental Clinics
;
Surgery, Computer-Assisted
;
Tooth Loss
5.A Case of Concurrent Osteoma and Lobular Capillary Hemangioma of the Middle Turbinate.
Kyung Wook HEO ; Chul Hwan KWON ; Seung Ryeol LEE ; Hyuk Jin CHANG
Korean Journal of Otolaryngology - Head and Neck Surgery 2006;49(3):339-342
Osteoma is a slowly growing benign tumor composed of compact or cancellous bone and usually found in paranasal sinuses. Lobular capillary hemangioma is a rapidly growing lesion usually affecting skin and oral mucosa. Both lesions may occur at any age group but most frequently in the third decade. The authors experienced a case of concurrent osteoma and lobular capillary hemangioma in the middle turbinate, which were removed via endonasal endoscopic approach. Concerning our case, we speculate that the slow growth of the osteoma may have caused inflammatory change on nasal mucosa, resulting in lobular capillary hemangioma. We report a case with a review of literatures.
Granuloma, Pyogenic*
;
Hemangioma, Capillary
;
Humans
;
Mouth Mucosa
;
Nasal Mucosa
;
Osteoma*
;
Paranasal Sinuses
;
Skin
;
Turbinates*
6.A Case of Mucous Membrane Plasmacytosis Arising from Oropharynx.
Kyung Wook HEO ; Hyuk Jin CHANG ; Seung Ryeol LEE ; Chul Hwan KWON
Korean Journal of Otolaryngology - Head and Neck Surgery 2005;48(12):1544-1547
Mucous membrane plasmacytosis is a rare benign condition characterized by plasma cell infiltration of the mucosa of upper aerodigestive tract. The lesions typically produce a cobblestone or warty appearance of the larynx, pharynx, palate, lips, mouth, tongue and trachea. Histologically, the lesions are characterized by a diffuse expanse of inflammatory cells situated in submucosal tissues, composed mainly of mature plasma cells with scattered polymorphonuclear cells and lymphocytes. Immunohistochemistry for kappa, lambda light chain showed polyclonal immunoglobulin content in all cases examined. A variety of medical and surgical treatments have been tried but none has led to improvement in the condition. In this study, we report, with a review of literature, a mucous membrane plasmacytosis arising from oropharynx in a 30 year-old female patient.
Adult
;
Female
;
Humans
;
Immunoglobulins
;
Immunohistochemistry
;
Larynx
;
Lip
;
Lymphocytes
;
Mouth
;
Mucous Membrane*
;
Oropharyngeal Neoplasms
;
Oropharynx*
;
Palate
;
Pharynx
;
Plasma Cells
;
Tongue
;
Trachea
7.The Characteristics of Tinnitus and Hearing Threshold: In Workers with Noise Induced Hearing Loss from a Hospital Setting.
Nam Jeong KIM ; Hyoung Ouk PARK ; Chang Sun SIM ; Choong Ryeol LEE ; Young Joo KWON ; Ji Ho LEE
Korean Journal of Occupational and Environmental Medicine 2012;24(4):431-440
OBJECTIVES: This study was carried out to define the relationship between the characteristics of tinnitus and hearing threshold (puretone and speech) in workers with noise induced hearing loss (NIHL). METHODS: A total of 189 cases(378 ears) from workers with compensation claims for NIHL during 2004-2009 were investigated. Various factors, including age, work carriers, body mass index (BMI), blood pressure, noise exposure level of worksite hearing threshold, speech discrimination score, pitch match, and loudness of tinnitus were analyzed. RESULTS: The average hearing threshold of all subject was 44.2 dBHL, puretone audiometry thresholds in subjects with tinnitus were lower than the non-tinnitus group (except at 8000 Hz). Using speech audiometry, the tinnitus group showed a lower speech recognition threshold and speech discrimination score. The tinnitus group also had an average tinnitus frequency of 4195.2 Hz, loudness of 73.6 dB, and tinnitus sensation average of 6.0 dBSL. These frequencies of tinnitus were in the lowest puretone audiometry frequencies. Tinnitus loudness had a strong relationship with puretone and speech audiometry thresholds. CONCLUSIONS: In cases beyond moderate hearing loss, the tinnitus group had a better puretone (except 8000 Hz) and speech hearing status, and most comfortable loudness (MCL) level. In addition, puretone and speech audiometry thresholds increase with tinnitus loudness.
Audiometry
;
Audiometry, Speech
;
Blood Pressure
;
Body Mass Index
;
Compensation and Redress
;
Hearing
;
Hearing Loss
;
Noise
;
Sensation
;
Speech Perception
;
Tinnitus
;
Workers' Compensation
;
Workplace
8.Efficacy and safety of antiplatelet-combination therapy after drug-eluting stent implantation.
Yun Kyeong CHO ; Chang Wook NAM ; Hyoung Seob PARK ; Hyuck Jun YOON ; Hyungseop KIM ; Seung Ho HUR ; Yoon Nyun KIM ; Jang Hoon LEE ; Dong Heon YANG ; Bong Ryeol LEE ; Byung Chun JUNG ; Woong KIM ; Jong Seon PARK ; Jin Bae LEE ; Kee Sik KIM ; Kwon Bae KIM
The Korean Journal of Internal Medicine 2014;29(2):210-216
BACKGROUND/AIMS: Combination single-pill therapy can improve cost-effectiveness in a typical medical therapy. However, there is a little evidence about the efficacy and tolerability of combination single-pill antiplatelet therapy after percutaneous coronary intervention (PCI) with drug-eluting stents (DES). METHODS: From June to November 2012, in total, 142 patients who met the following criteria were enrolled: at least 18 years old; successful PCI with DES at least 3 months earlier; and regular medication of aspirin and clopidogrel with no side effects. After VerifyNow P2Y12 and aspirin assays, the combination single pill of aspirin and clopidogrel was given and laboratory tests were repeated 6 weeks later. RESULTS: At baseline, the incidence of aspirin resistance, defined as aspirin reaction unit (ARU) > or = 550, was 9.2%, that of clopidogrel resistance, defined as P2Y12 reaction unit (PRU) > or = 230, was 46.5%, and that of percent inhibition of PRU < 20% was 32.4%. At follow-up, the incidence of resistance by ARU value was 7.0%, 50.0% by PRU value, and 35.9% by percentage inhibition of PRU, respectively. The mean values of ARU (431.5 +/- 63.6 vs. 439.8 +/- 55.2; p = 0.216) and PRU (227.5 +/- 71.4 vs. 223.3 +/- 76.0; p = 0.350) were not significantly different before versus after antiplatelet-combination single-pill therapy. Five adverse events (3.5%) were observed during the study period. CONCLUSIONS: Combination single-pill antiplatelet therapy, which may reduce daily pill burden for patients after PCI with DES, demonstrated similar efficacy to separate dual-pill antiplatelet therapy.
Aged
;
Antiplatyhelmintic Agents/*administration & dosage/adverse effects
;
Aspirin/*administration & dosage/adverse effects
;
Drug Combinations
;
Drug Resistance
;
*Drug-Eluting Stents
;
Female
;
Humans
;
Intention to Treat Analysis
;
Male
;
Middle Aged
;
Myocardial Ischemia/blood/diagnosis/*therapy
;
Percutaneous Coronary Intervention/adverse effects/*instrumentation
;
Platelet Function Tests
;
Prospective Studies
;
Tablets
;
Ticlopidine/administration & dosage/adverse effects/*analogs & derivatives
;
Time Factors
;
Treatment Outcome
9.Hyperuricemia is a risk factor for the progression to end-stage renal disease in minimal change disease
Su Hyun SONG ; Tae Ryom OH ; Hong Sang CHOI ; Chang Seong KIM ; Dong Ryeol RYU ; Sung Gyun KIM ; Sun-Hee PARK ; Seong Kwon MA ; Soo Wan KIM ; Eun Hui BAE ;
Kidney Research and Clinical Practice 2021;40(3):411-418
Background:
Minimal change disease (MCD) is one of the most common causes of nephrotic syndrome worldwide. Hyperuricemia increases the end-stage renal disease (ESRD) risk in glomerulonephritis. In this study, we aimed to determine the effect of high serum uric acid levels on the progression to ESRD in MCD.
Methods:
A total of 800 patients diagnosed with MCD by kidney biopsy were retrospectively analyzed. We determined the relationship of hyperuricemia with the progression to ESRD in MCD using the Cox proportional hazard model and Kaplan-Meier survival analysis. The primary outcome was defined as the initiation of dialysis or kidney transplantation.
Results:
A total of 42 patients (5.3%) progressed to ESRD during the follow-up period. In the restricted cubic spline curve, serum uric acid levels exhibited a positive correlation with ESRD progression in patients with MCD. In the fully adjusted model, the risk of MCD progression increased by 29% for every 1 mg/dL increase in the baseline serum uric acid level (hazard ratio [HR], 1.29; 95% confidence interval [CI], 1.09–1.54; p = 0.004). Falling into the high uric acid group (serum uric acid level > 7 mg/dL in men and > 6 mg/dL in women) was also a risk factor for progression of MCD to ESRD (HR, 3.40; 95% CI, 1.59–7.31; p < 0.001).
Conclusion
Our study shows that hyperuricemia is an independent risk factor for the progression to ESRD in patients with MCD.