1.A case of cavernous lymphangioma in mediastinum.
Jin Kee JUNG ; Sang Du LEE ; Kee Yong PARK ; Dock Yong CHUNG ; Mi Sun LEE ; Jong Gun KIM
Journal of the Korean Pediatric Society 1993;36(3):417-422
Cavernous lymphangioma in mediastinum is a rare congenital malformation of lymphatic system and is caused by lack of adequate drainage from the sequestrated lymphatic vessels to the venous system due to insufficiency or atresia of the efferent lymphatic channels The authors experienced 10 month-old male patient with cavernous lymphangioma in mediastinum documented by chest CT and open biopsy The review of the literature was made briefly.
Biopsy
;
Drainage
;
Humans
;
Infant
;
Lymphangioma*
;
Lymphatic System
;
Lymphatic Vessels
;
Male
;
Mediastinum*
;
Tomography, X-Ray Computed
2.coagulopathy in scrub typhus: changes of plasma t-PA concentration and its relationship with disseminated intravascular coagulation.
Du Hyok CHOI ; Seonyang PARK ; Kyung Chae KYE ; Byoung Kook KIM ; Kang Won CHOI ; Jung Sang LEE ; Munho LEE
Korean Journal of Hematology 1992;27(1):69-73
No abstract available.
Disseminated Intravascular Coagulation*
;
Plasma*
;
Scrub Typhus*
3.Analysis of implant strain value exerted using different screw tightening protocols in screw-retained 3-unit prostheses
Sang-Beom KIM ; Du-Hyeong LEE ; Cheong-Hee LEE
The Journal of Korean Academy of Prosthodontics 2020;58(4):321-327
Purpose:
The purpose of this study was to measure and compare the strain value exerted on the cervical area using different screw tightening protocols in implant-supported, screw-retained 3-unit prostheses.
Materials and methods:
Strain gauges were attached to four implants: two external and two internal. Thereafter, two study model were designed each type using acrylic resin. CAD-CAM was used to design hex and nonhex abutments for each group (EH, ENH, IH, and INH group) and Screw-cement-retained prostheses were also designed using a nonprecious base metal. Abutment was fixed with 10 Ncm torque, and the prosthesis was cemented. Screws were fixed with 30 Ncm torque using different three protocols. After 5 min, the strain gauge level was measured, and group analysis was performed (α=.05).
Results:
External group showed significantly lower strain values than internal group and the EH group showed significantly lower strain values than the ENH group (P<.05). There was no difference in strain value based on the types of screw tightening protocols in same group (P>.05). The IH group exhibited significantly higher strain values than the INH group and the IH group showed a significant difference in strain values based on the types of screw tightening protocols used (P<.05).
Conclusion
There was no significant effect on the external type in the implant-supported, screw-retained prostheses. However, strain values were high in the internal type, and the types of screw tightening protocol significantly affected these implants.
4.Assessment of Autonomic Nervous Dysfunction by Heart Rate Spectral Analysis (HRSA) in Patients with Angina Pectoris.
Choong Ki LEE ; Du Ha LEE ; Young Jo KIM ; Bong Sup SHIM ; Hyun Woo LEE ; Sang Hak LEE ; Joon Ha LEE
Korean Circulation Journal 1992;22(1):87-95
BACKGROUND: The autonomic nervous control of the cardiovascular system has been thought to have a diurnal variation in its activity. This variation could be an important underlying mechanism for the circardian distribution of cardiac events such as angina pectoris attack, transient myocardial ischemia, and some arrhythmia. The vagal cardiac function is commonly impaired in patients with coronary artery disease. Recently, an assessment of parasympathetic and sympathetic activities is now possible using neart rate spectral analysis. The spectral density of R-R interval variability contains two major components, high frequency (HF) power spectral density (<0.25Hz) and low frequency (LF) power spectral density (<0.15Hz), which have magnitudes that are quantitative markers of cardiac vagal activity and sympathetic activity with vagal modulation, respectively. METHODS: We analyzed the spectral components of R-R interval variability from 24 hour ambulatory holter monitoring in 20 controls and 20 patients with angina pectoris. The patients had no clinical evidence of hypertension, acute myocardial infarction, heart failure, arrhythmia or diabetes mellitus. Recording continued for 24 hours while the subject undertook his normal work and leisure activities. For power spectral analysis, 1024 hours beats was sampled at early morning, afternoon, evening and during sleeping. RESULTS: The spectral component of R-R interval variability was unaffected by the time of day during the waking period, althought a significant decrease in LFCCV and HFCCV was observed during sleeping in controls(p<0.001). In comparison of two groups, patients with angina pectoris showed markedly diminished HFCCV values during waking period except during sleeping period. The R-R interval and LF/HFCCV and LF/HFCCV ratio at transient ischemic attack in patients with angina pectoris. CONCLUSION: Autonomic cardiac control during the waking period shows little variation with the time of day in both groups. We observed that vagal cardiac function was reduced in patients with coronary artery disease by heart rate spectral analysis. It is suggested that ischemic changes in patients with coronary artery disease underlying reduced vagal cardiac function is associated with increased sympathetic activity.
Angina Pectoris*
;
Arrhythmias, Cardiac
;
Cardiovascular System
;
Coronary Artery Disease
;
Diabetes Mellitus
;
Electrocardiography, Ambulatory
;
Heart Failure
;
Heart Rate*
;
Heart*
;
Humans
;
Hypertension
;
Ischemic Attack, Transient
;
Leisure Activities
;
Myocardial Infarction
;
Myocardial Ischemia
5.Effects of wax rim in image registration of intraoral and face scan in edentulous arch condition
Sang-Hyeok SEO ; Cheong-Hee LEE ; Kyu-Bok LEE ; So-Yeun KIM ; Du-Hyeong LEE
Journal of Dental Rehabilitation and Applied Science 2024;40(3):135-141
Purpose:
The purpose of this study was to investigate the accuracy of image merging of an intraoral scan of an edentulous arch to a facial scan using wax rim and markers. .
Materials and Methods:
For registration of oral scan to face scan, a wax rim with markers wasmade. The markers were cuboid and divided into four groups according to size (5, 10 mm) and attachment location (midline, canine region). The evaluation of registration accuracy was compared with a standard created using cone-beam computed tomographydata. Anterior linear variation of the edentulous arch and the 3D variation of the overall arch were measured. Kruskal-Wallis test and Mann-Whitney U test were used for statistics, and the significance level was set at 0.05 and evaluated under Bonferroni correction (0.05/6 = 0.083).
Results:
In the anterior deviation and global deviation results, there was no statistically significant difference in the oral scan position displacement values between the 5 mm and 10 mm groups. When the midline marker was used, the intraoral scan position displacement value was significantly lower than when only the canine marker was used.
Conclusion
Marker attached wax rim can be used for image matching between facial and intraoral scans of the edentulous arch. Marker location at the middle area increases the accuracy of image matching.
6.Effects of wax rim in image registration of intraoral and face scan in edentulous arch condition
Sang-Hyeok SEO ; Cheong-Hee LEE ; Kyu-Bok LEE ; So-Yeun KIM ; Du-Hyeong LEE
Journal of Dental Rehabilitation and Applied Science 2024;40(3):135-141
Purpose:
The purpose of this study was to investigate the accuracy of image merging of an intraoral scan of an edentulous arch to a facial scan using wax rim and markers. .
Materials and Methods:
For registration of oral scan to face scan, a wax rim with markers wasmade. The markers were cuboid and divided into four groups according to size (5, 10 mm) and attachment location (midline, canine region). The evaluation of registration accuracy was compared with a standard created using cone-beam computed tomographydata. Anterior linear variation of the edentulous arch and the 3D variation of the overall arch were measured. Kruskal-Wallis test and Mann-Whitney U test were used for statistics, and the significance level was set at 0.05 and evaluated under Bonferroni correction (0.05/6 = 0.083).
Results:
In the anterior deviation and global deviation results, there was no statistically significant difference in the oral scan position displacement values between the 5 mm and 10 mm groups. When the midline marker was used, the intraoral scan position displacement value was significantly lower than when only the canine marker was used.
Conclusion
Marker attached wax rim can be used for image matching between facial and intraoral scans of the edentulous arch. Marker location at the middle area increases the accuracy of image matching.
7.Effects of wax rim in image registration of intraoral and face scan in edentulous arch condition
Sang-Hyeok SEO ; Cheong-Hee LEE ; Kyu-Bok LEE ; So-Yeun KIM ; Du-Hyeong LEE
Journal of Dental Rehabilitation and Applied Science 2024;40(3):135-141
Purpose:
The purpose of this study was to investigate the accuracy of image merging of an intraoral scan of an edentulous arch to a facial scan using wax rim and markers. .
Materials and Methods:
For registration of oral scan to face scan, a wax rim with markers wasmade. The markers were cuboid and divided into four groups according to size (5, 10 mm) and attachment location (midline, canine region). The evaluation of registration accuracy was compared with a standard created using cone-beam computed tomographydata. Anterior linear variation of the edentulous arch and the 3D variation of the overall arch were measured. Kruskal-Wallis test and Mann-Whitney U test were used for statistics, and the significance level was set at 0.05 and evaluated under Bonferroni correction (0.05/6 = 0.083).
Results:
In the anterior deviation and global deviation results, there was no statistically significant difference in the oral scan position displacement values between the 5 mm and 10 mm groups. When the midline marker was used, the intraoral scan position displacement value was significantly lower than when only the canine marker was used.
Conclusion
Marker attached wax rim can be used for image matching between facial and intraoral scans of the edentulous arch. Marker location at the middle area increases the accuracy of image matching.
8.A Case of Loeffler's Endocarditis with Acute Obstruction of Common Iliac Artery.
Sang Kon SHIN ; Du Ha LEE ; Sung Ho HUR ; Jeong Ku KIM ; Hyun Taek LEE ; Hong Sok LEE ; Jin Ha KOO ; Tae Ho JUNG ; Sang Min LEE ; O Jun KWON
Korean Circulation Journal 1999;29(11):1264-1264
Loeffler's endocarditis is a recognized complication of diseases associated with eosinophilia. This disease is considered to be a part of the idiopathic hypereosinophilic syndrome, which is characterized by persistently elevated blood eosinohil counts with symptoms and signs of organ involvement especially in the heart, nervous system, and bone marrow. We have experienced a case of Loeffler's endocarditis in a 51 years old man who complained of leg pain due to acute closure of left iliac artery by emboli. We found left ventricular mural thrombus by echocardiography and confirmed Loeffler's endocarditis by endomyocardial biopsy. We present a case with the review of literatures.
Biopsy
;
Bone Marrow
;
Echocardiography
;
Eosinophilia
;
Heart
;
Humans
;
Hypereosinophilic Syndrome*
;
Iliac Artery*
;
Leg
;
Middle Aged
;
Nervous System
;
Thromboembolism
;
Thrombosis
9.Two Patients with Hemiparesis as Manifestation of Status Epilepticus.
In Uk SONG ; Joong Seok KIM ; Yeong In KIM ; Sang Bong LEE ; Du Shin JEONG ; Kwang Soo LEE
Journal of the Korean Geriatrics Society 2006;10(4):311-315
Inhibitory motor seizure or ictal hemiparesis is very infrequent seizure type and sometimes difficult to differentiate from acute cerebrovascular disease. We report two patients with hemiparesis as manifestation of status epilepticus. One patient showed epileptic discharge on midline frontocentral region by EEG-Video monitoring, another patient showed continuous slowing wave associated with hyperperfusion findings of brain SPECT on left fronto-temporo-parietal region. Both patients showed normal brain imaging.
Brain
;
Humans
;
Neuroimaging
;
Paresis*
;
Seizures
;
Status Epilepticus*
;
Tomography, Emission-Computed, Single-Photon
10.Analysis of rpoB Gene in Rifampin-Resistant M. Tuberculosis by Direct Sequencing and Line Probe Assay.
Min Ki LEE ; Yun Seong KIM ; Hyo Jin LEE ; Du Su CHEON ; Sang Myung YUN ; Sam Seok PARK ; Cheol Min KIM ; Soon Kew PARK
Tuberculosis and Respiratory Diseases 1997;44(2):251-263
BACKGROUND: The emergence of multidrug-resistant strains of Mycobacterium tuberculosis presents a significant challange to the treatment and control of tuberculosis, and there is an urgent need to understand the mechanisms by which strains acquire multidrug resistance. Recent advances in molecular methods for the detection of M. tuberculosis genetic targets have approached the sensitivity of culture Furthermore the prospect of determining resistance in mycobacteria at the nucleic acid level particulary to first-line drugs like rifampin, isoniazid has provided a glimps of the next generation of sensitivity test for M. tuberculosis. Previous studies in RMP resistant M. tuberculosis have shown that mutation in beta subunit of RNA polymerase is main mechanism of resistance. METHOD: In this study, rpoB gene for the ~3 subunit of RNA polymerase from M. tuberculosis of 42 cultured samples (32 were RMP resistant and 10 were sensitive cases) were isolated and characterised the mutations. Direct sequencing data were compared with the results of INNO-LiPA Line Probe Assay (LiPA, Innogenetics, Belgium), commercial RMP resistance detecting kit using reverse hybridization method. RESULTS: All of the RMP resistant samples were revealed the presence of mutation by LiPA. In 22 samples (68.8%) out of 32 RMP resistant cases, the mutation types were confirmed by the positive signal at one of 4 mutation bands in the strip. The most frequent type was R5 (S53 IL) which were 17 cases (77.3%). Results of direct sequencing were identified the exact characteristics of 8 mutations which were not comfirmed by LiPA. S522W type point mutation and 9 base pair deletion at codon 513-515 were new identified mutations for the first time. CONCLUSION: Mutations in rpoB gene is the main mechanism of RMP resistance in M. tuberculosis and LiPA is a very useful diagnostic tool for the early diagnosis of RMP resistance in M. tuberculosis.
Base Pairing
;
Codon
;
DNA-Directed RNA Polymerases
;
Drug Resistance, Multiple
;
Early Diagnosis
;
Isoniazid
;
Mycobacterium tuberculosis
;
Point Mutation
;
Rifampin
;
RNA Polymerase I
;
Tuberculosis*