1.Plaque Characteristics and Clinical Presentation Associated with Coronary Artery Remodeling: An Intravascular Ultrasound Study.
Seung Jea TAHK ; Myeong Ho YOON
Korean Circulation Journal 2000;30(8):911-920
BACKGROUND: Factors leading to coronary remodeling and relationship between remodeling patterns and clinical presentation remain unclear. METHODS: Seventy-five culprit lesions of 75 patients with acute coronary syndrome(ACS)(n=9) and stable angina(SA)(n=6)(60 men and 15 women; mean age 56+/-10 years) were studied by intravascular ultrasound. Remodeling index(RI) was calculated as culprit lesion vessel area(VA)/proximal reference VA. We defined: 1)compensatory remodeling(CpR) as RI> or =1.1; 2)constrictive remodeling(CsR) as RI< or =0.9; 3)no remodeling(NR) as 0.9
2.Plaque Characteristics and Clinical Presentation Associated with Coronary Artery Remodeling: An Intravascular Ultrasound Study.
Seung Jea TAHK ; Myeong Ho YOON
Korean Circulation Journal 2000;30(8):911-920
BACKGROUND: Factors leading to coronary remodeling and relationship between remodeling patterns and clinical presentation remain unclear. METHODS: Seventy-five culprit lesions of 75 patients with acute coronary syndrome(ACS)(n=9) and stable angina(SA)(n=6)(60 men and 15 women; mean age 56+/-10 years) were studied by intravascular ultrasound. Remodeling index(RI) was calculated as culprit lesion vessel area(VA)/proximal reference VA. We defined: 1)compensatory remodeling(CpR) as RI> or =1.1; 2)constrictive remodeling(CsR) as RI< or =0.9; 3)no remodeling(NR) as 0.9
3.A case of Paget's disease of the vulva.
Young Ho PARK ; Myeong Soon JEON ; Chul Hee YOON
Korean Journal of Obstetrics and Gynecology 1993;36(7):1687-1689
No abstract available.
Vulva*
4.Antimicrobial Susceptibilities and Serotypes of Group B Streptococci Isolated from Pregnant Women.
Young UH ; In Ho JANG ; Gyu Yel HWANG ; Kap Jun YOON ; Jang Yeon KWON ; Myeong Cheol KIM
Korean Journal of Clinical Pathology 1997;17(2):260-268
BACKGROUND: Recent data suggest that the colonization rate of group B streptococci(GBS) in pregnant women and the incidence of neonatal infections by GBS is increasing trend in Korea, but the antimicrobial susceptibilities and serotypes in pregnant women have not been reported in Korea. So, we studied to define the antimicrobial susceptibility patterns and frequency of serotypes of GBS in pregnant women. METHODS: The susceptibility and serotyping of 60 GBS isolates from 27 pregnant women and four isolates from their two neonates were tested by an agar dilution method and agglutination test, respectively. The typing sera used in this study were Ia, Ib, II, III, IV, and V. RESULTS: Minimal inhibitory concentration range of 60 GBS from pregnant women were penicillin G 0.015-0.12 microgram/ml, vancomycin 0.5-2 microgram/ml, clindamycin 0.015-4.0 microgram/ml, chloramphenicol 2-4 microgram/ml, erythromycin 0.015-2 microgram/ml, tetracycline 0.5-256 microgram/ml, cephalothin 0.12-0.25 microgram/ml, ceftriaxone 0.03-0.12 microgram/ml, respectively. The resistance rate of GBS were 6.7% to clindamycin, 0% to erythromycin, and 98.3% to tetracycline. Most of GBS serotypes from pregnant women in decreasing order were Ib(48.3%), Ia(24.1%), III(20.7%). CONCLUSION: All GBS strains isolated from pregnant women are highly susceptible to commonly used antimicrobial agents with the exception of tetracycline. The low prevalence of severe neonatal GBS infections in Korea is not due to the absence of serotype III, but probably due to a low genital carriage rate of GBS by pregnant women.
Agar
;
Agglutination Tests
;
Anti-Infective Agents
;
Ceftriaxone
;
Cephalothin
;
Chloramphenicol
;
Clindamycin
;
Colon
;
Erythromycin
;
Female
;
Humans
;
Incidence
;
Infant, Newborn
;
Korea
;
Penicillin G
;
Pregnant Women*
;
Prevalence
;
Serotyping
;
Tetracycline
;
Vancomycin
5.Imaging Findings of Osler-Weber-Rendu Disease Involving the Liver.
Dong Ho LEE ; Jin Wook CHUNG ; Jae Hyung PARK ; In Kyu YU ; Hye Kyung YOON ; Guk Myeong CHOI
Journal of the Korean Radiological Society 1995;32(6):943-946
A 62-year-old woman with hereditary hemorrhagic telangiectasia(HHT) or Osler-Weber-Rendu disease involving the liver is presented. Imaging findings including color Doppler sonograph and CT findings are described.
Female
;
Humans
;
Liver*
;
Middle Aged
6.Endovascular Treatment of Direct Carotid Cavernous Fistulas Using Detachable Balloon(s) and Coils.
Myeong Sub LEE ; Dong Ik KIM ; Myung Soon KIM ; Pyeong Ho YOON ; Hyun Sook KIM ; Yoon Jun WHANG
Journal of the Korean Radiological Society 1999;40(6):1051-1056
PURPOSE: To evaluate the merits of this technique and to provide a standard for comparison with futuretreatment alternatives. MATERIALS AND METHODS: We retrospectively reviewed the records of 52 patients withdirect CCF treated at the Yonsei Medical Center between 1983 and 1997 by transarterial or transvenous embolizationusing detachable balloon(s) and/or coils. RESULTS: Among the 52 cases, 51 were traumatic in origin, while onlyone was the result of a ruptured aneurysm. The three most common presentations were chemosis, bruit, andpulsatile proptosis. Forty-five patients were successfully treated with detachable balloon(s) and/or coils andinternal carotid blood flow was preserved in 35. When coils were used (1993-7), the ICA preservation rate washigher than when they were not used (1983-92). To confirm statistical significance, however, more studies areneeded. Four patients who initially presented with incomplete occlusion showed spontaneous occlusion on follow upangiography. In two patients, surgical ligation was performed because embolization failed and there was incompleteocclusion of the fistula. We experienced complications such as transient 3rd and 6th cranial nerve palsy,migration of deflated balloons and coils to the lung, and loss of vision. CONCLUSION: Transarterial andtransvenous embolization with detachable balloon(s) and/or coils provides a high rate of fistula obliteration withlow morbidity. In particular, the use of coils led to an increased rate of ICA preservation, thus and isconsidered as a good treatment modality for CCF obliteration.
Aneurysm, Ruptured
;
Cranial Nerves
;
Exophthalmos
;
Fistula*
;
Humans
;
Ligation
;
Lung
;
Retrospective Studies
7.Two Cases of Emphysematous Cystitis.
Joo Ik PARK ; Joo Myeong SHIM ; Seong Yoon JUNG ; Young Hoo SEO ; Jae Il JUNG ; Ho Cheol CHOI ; Sung Hyup CHOI ; Heon Sung LEE
Korean Journal of Urology 2000;41(8):1033-1095
No abstract available.
Cystitis*
8.Relation Between Vascular Resistance and Intimal Thickness in Patients with Coronary Artery Disease.
So Yeon CHOI ; Seung Jea TAHK ; Zhe Xun LIAN ; Myeong Ho YOON ; Jong Hoon KOH ; Joon Han SHIN ; Han Soo KIM ; Byung Il CHOI
Korean Circulation Journal 2001;31(1):54-62
BACKGROUND: The intimal thickening of coronary artery was understood as an early process in the beginning of atherosclerosis. However, the implication of intimal thickening as a morphologic change of coronary artery disease, on the coronary vascular hemodynamics has not been explored. METHODS: To evaluate the effect of intimal thickening on the coronary vascular hemodynamics, we studied the extent of intimal thickening on intravascular ultrasound(IVUS) and the coronary vascular flow and resistance by using Doppler wire in left anterior descending coronary arteries after successful intervention in 40 patients(29 males, mean age 55+/-9 years) with coronary artery disease. Mean intimal index and mean lumen cross sectional area were determined by IVUS and coronary flow average peak velocity was obtained by using Doppler wire before and after intracoronary adenosine in distal artery to the stenosis. Coronary flow velocity reserve(CFR), volumetric coronary blood flow(CBF) and coronary vascular resistance index(CVRI) were calculated. Hyperemic pressure-to-flow ratio(hyperemic mean aortic pressure/hyperemic volumetric coronary blood flow), ie, an index of minimal coronary vascular resistance(mCVR), was further derived. RESULTS: Intimal index(mean 20.0+/-8.3%) was significantly correlated with CVRI(mean 0.33+/-0.14, r=.37, p=.02) and mCVR(mean 0.81+/-0.40mmHg/ml/min, r=.36, p=.02). However, there was no correlation with CBF and CFR. CONCLUSION: The CVRI and mCVR(hyperemic pressure to flow ratio), the indices coronary microvascular resistance, were significantly related to the degree of intimal thickness of coronary artery. The extent of intimal thickness of coronary artery on IVUS study may be related to microvascular integrity.
Adenosine
;
Arteries
;
Atherosclerosis
;
Constriction, Pathologic
;
Coronary Artery Disease*
;
Coronary Vessels*
;
Hemodynamics
;
Humans
;
Male
;
Vascular Resistance*
9.A case of recurrent infantile polycystic kidney associated with hydrops fetalis.
Chang Kyu KIM ; Sei Kwang KIM ; Young Ho YANG ; Myeong Seon LEE ; Jung Hoon YOON ; Chan Il PARK
Yonsei Medical Journal 1989;30(1):95-103
Nonimmune hydrops fetalis is becoming a predominant form of fetal hydrops due to the declining incidence of immune hydrops fetalis triggered by Rh isoimmunization. Infantile polycystic kidney appeared to be related to hydrops fetalis whether it is causal or merely coincidental and may represent another entry to differential diagnoses. Infantile polycystic kidney was diagnosed by an elevated maternal serum alpha-fetoprotein (AFP) value coupled with an ultrasonographic abnormality scanned as a multicystic mass with ascites in the fetal abdomen antenatally. This study presents a case of infantile polycystic kidney that resulted in a stillborn baby with hydrops fetalis and extensive placental calcification; it was the first case in Korea in which nonimmune hydrops fetalis was associated with infantile polycystic kidney in consecutive siblings by autosomal recessive inheritance in one family. In addition, this paper comprehensively reviews the incidence, etiology, prenatal diagnosis and proper management of nonimmune hydrops fetalis.
Adult
;
Female
;
Fetal Death/complications
;
Fetal Diseases/*complications/pathology
;
Human
;
Hydrops Fetalis/*complications/pathology
;
Pedigree
;
Polycystic Kidney Diseases/*complications/pathology
;
Pregnancy
;
Recurrence
10.Angiographic spontaneous pseudo-resolution of a coronary artery aneurysm after implantation of a sirolimus-eluting stent.
Yong Woo CHOI ; Hong Seok LIM ; Seung Jea TAHK ; Myeong Ho YOON ; Hyoung Mo YANG ; Xiong Jie JIN
The Korean Journal of Internal Medicine 2016;31(5):987-990
No abstract available.
Aneurysm*
;
Coronary Aneurysm
;
Coronary Vessels*
;
Drug-Eluting Stents
;
Stents*
;
Ultrasonography, Interventional