1.A case of anomalous left coronary artery from pulmonary artery (Bland-White-garland sysndrome).
Se Il O ; Ha Jin LIM ; Byung Hee OH ; Myoung Mook LEE ; Young Bae PARK ; Yun Shik CHOI ; Jung Don SEO ; Young Woo LEE ; Jeong Hyun KIM
Korean Circulation Journal 1993;23(3):468-473
An anomalous left coronary artery from the pulmonary artery(Bland-White-Garland syndrome) is a rare congenital malformation and sometimes fatal. It is caused by an abberant endothelial budding from or an anomalous division of the truncus arteriosus. Echocardiography (transthoracic and transesophageal) and angiographical imaging are essential for the diagnosis of this anomaly. Corrective Surgery is recommended due to its fatal natural course. A case was diagnosed in a 45-year-old man who presented with intermittent palpitation. This patient was successfully treated with closure of anomalous left coronary artery orifice combined with right saphenous vein graft anastomosis.
Bland White Garland Syndrome
;
Coronary Vessels*
;
Diagnosis
;
Echocardiography
;
Humans
;
Middle Aged
;
Pulmonary Artery*
;
Saphenous Vein
;
Transplants
;
Truncus Arteriosus
2.Effect of pressure rise time on tidal volume and gas exchange during pressure control ventilation.
Byung O JEONG ; Youn Suck KOH ; Tae Sun SHIM ; Sang Do LEE ; Woo Sung KIM ; Dong Soon KIM ; Won Dong KIM ; Chae Man LIM
Tuberculosis and Respiratory Diseases 2000;48(5):766-772
BACKGROUND: Pressure rise time (PRT) is the time in which the ventilator aclieves the set airway pressure in pressure-targeted modes, such as pressure control ventilation (PCV). With varying PRT, in principle, the peak inspiratory flow rate of the ventilator also varies. And if PRT is set to a shorter duration, the effective duration of target pressure level would be prolonged. which in turn would increase inspiratory tidal volume(Vti) and mean airway pressure(Pmean). We also postulated that the increase in Vti with shortening of PRT may relate inversely to the patients' basal airway resistance. METHODS: In 13paralyzed patients on PCV(pressure control 18±9.5cm H2, FIO2 0.6±0.3, PEEP 5±3cm H2O, f20/min, I : E, 1 : 2) with Servo 300(Siemens-Elema, Solna, Sweden)from various causes of respiratory failure, PRT of 10%, 5% and 0% were randomly applied. At 30min of each PRT trial, peak inspiratory flow (PIF, L/sec), Vti(ml), Pmean(cm H2O) and ABGA were determined. RESULTS: At PRT 10, 5% and 0%, PIF were 01.69±0.13, 0.77±0.19, 0.83±0.22, respectively(p<0.001). Vti were 425±94, 439±101, 456±106, respectively(p<0.001), and Pmean were 11.2±3.7, 12.0±3.7, 12.5±3.8, respectively(p<0.001). pH were 7.40±0.08, 7.40 ±0.92, 7.41±0.96, respectively (p=0.004) ; PaCO2 (mm Hg) were 47.4±15.8, 47.2±15.7, 44.6±16.2, respectively (p=0.004) ; PAO2 - PaO2 (mm Hg) were 220±98, 224±95, 227±94, respectively(p=0.004) ; and Vd/Vt as determined by (PaCO2 - P CO2/PaCO2 were 0.67±0.07, 0.67±0.08, 0.66 ±0.08, respectively(p=0.007). The correlation between airway resistance and change of Vti from PRT 10% to 0% were r=-0.243(0.498). CONCLUSION: Shortening of pressure rise time during PCV was associated with associated with increased tidal volume, increased mean airway pressure and lower PaCO2.
Airway Resistance
;
Humans
;
Hydrogen-Ion Concentration
;
Respiratory Insufficiency
;
Tidal Volume*
;
Ventilation*
;
Ventilators, Mechanical
3.Evaluation and Prevention of Gentamicin-induced Vestibulotoxicity in Rabbits Using Off-Vertical Axis Rotation.
Hyun Min PARK ; Sang Jun JEON ; Shin Keun JEONG ; Won il CHOI ; Byung Kuhn PARK ; Chung Ku RHEE ; Sun O CHANG
Korean Journal of Otolaryngology - Head and Neck Surgery 2003;46(4):282-288
BACKGROUND AND OBJECTIVES: The purposes of this study was to investigate the characteristics of gentamicin-induced vestibulotoxicity of s otolith organs by assessing the results of earth vertical and the off-vertical axis rotation tests with a morphologic study. MATERIALS AND METHODS: Rabbits were grouped into two groups, ototoxic and ototoxic prevention group. Vestibulotoxicity was induced by injecting gentamicin (GM) into the peritoneum. Prevention of the vestibulotoxicity was studied by injecting NMDA receptor inhibitors (MK-801), iron chelating agents (deferoxamine) peritonially, and osmotic pumps filled with neurotrophic factors (GDNF, BDNF), respectively. The animal rotation system was designed to rotate the animal sinusoidally or in velocity step (constant velocity) rotation. Off-vertical rotation was applied to evaluate the otolithic function. Scanning electron microscopy were examined for the structural changes of the otolithic organs. RESULTS AND CONCLUSIONS: GM-induced vestibulotoxicity was confirmed by gain decreasing in the earth vertical SHA rotation test and bias decreasing in the off-vertical rotation test. However, changes in modulation was not definite. Bilateral prevention of GM-induced vestibulotoxicity was confirmed by systemic injection of deferoxamine and MK-801, and characteristics of unilateral prevention was confirmed by local application of the neurotrophic factors using osmotic pumps. In the SEM study, the GM-induced hair cell damages of the vestibule were identified, which was prevented by the preventive drugs. The reduction of bias value without change of modulation was comparable with the reduction of gain in the earth vertical axis rotation after GM-induced vestibulotoxicity.
Rabbits
;
Animals
;
Drug Toxicity
4.Our Experiences in Nipple Reconstruction Using the Hammond flap.
Jung Dug YANG ; Jeong Yeop RYU ; Dong Wan RYU ; O Hyun KWON ; Sung Gun BAE ; Jeong Woo LEE ; Kang Young CHOI ; Ho Yun CHUNG ; Byung Chae CHO
Archives of Plastic Surgery 2014;41(5):550-555
BACKGROUND: Nipple reconstruction following breast mound reconstruction is the final step in breast reconstruction. Although nipple reconstruction is a simple surgery, the psychological aspects of nipple reconstruction are thought to be important. Nipple projection is a key factor in determining patient satisfaction with the surgery. In the present study, the Hammond flap technique was introduced for nipple reconstruction. METHODS: Twenty-six patients who had undergone breast reconstruction from February 2008 to March 2012 were enrolled in this prospective study. All patients were evaluated based on preoperative photos, and their nipple diameters and heights were measured. Postoperative evaluation was conducted 3, 6, 9, and 12 months following nipple reconstruction. A questionnaire on patient satisfaction with the nipple reconstruction was administered 12 months after nipple reconstruction. Moreover, the same plastic surgeon scored nipple projection and overall cosmetic result of the new nipple. RESULTS: The mean projection was 4.4 mm (range, 3-6 mm), and it well matched the contralateral nipple. Twelve months following nipple reconstruction, the mean reduction rate in the nipple projection was 43.6%. Patients were satisfied or very satisfied with the nipple projection and the overall cosmetic result in 80.7% cases. CONCLUSIONS: In the present study, compared with other techniques, the use of the Hammond flap technique in nipple reconstruction showed competitive results with regard to nipple projection and patient satisfaction.
Breast
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Female
;
Humans
;
Mammaplasty
;
Nipples*
;
Patient Satisfaction
;
Prospective Studies
;
Surveys and Questionnaires
5.Platelet-Rich Plasma: Quantitative Assessment of Growth Factor Levels and Comparative Analysis of Activated and Inactivated Groups.
Jeong Woo LEE ; O Hyun KWON ; Taek Kyun KIM ; Young Kyoo CHO ; Kang Young CHOI ; Ho Yun CHUNG ; Byung Chae CHO ; Jung Dug YANG ; Jun Ho SHIN
Archives of Plastic Surgery 2013;40(5):530-535
BACKGROUND: Platelet-rich plasma (PRP) has more concentrated platelets than normal plasma (approximately 150-400x10(3) cell/dL). Platelets excrete several growth factors and cytokines that are associated with the healing and regeneration process. However, even though PRP is widely used, the mechanism or actual effect is presently unclear. Therefore, this study was performed to investigate the levels of growth factors and platelet concentration rate. METHODS: Autologous blood for preparing PRP was obtained from healthy subjects aged 25 to 35 years. The samples were divided into 4 experimental groups (inactivated whole blood, inactivated PRP, activated whole blood with thrombin and calcium chloride, and activated PRP). The platelet counts in the blood were analyzed and the growth factors were quantitatively measured. A statistical analysis was performed by using Dunn's multiple comparison test. RESULTS: In the blood cell analysis, the platelet count of the PRP group was approximately 4.25 times higher than that of the whole blood group. In the quantitative analysis of growth factors, the platelet-derived growth factor (PDGF)-AB, PDGF-BB, and transforming growth factor-beta of the inactivated and activated PRP groups were higher than those of the inactivated and activated whole blood groups (P<0.05). CONCLUSIONS: In this study, the platelet count and the levels of PDGF-AB and PDGF-BB in the PRP were determined. Further, more research is required on the bioactivity level of the growth factors secreted during the process of PRP preparation and the potency of growth factors that can be exerted physiologically in vivo.
Aged
;
Blood Cells
;
Blood Group Antigens
;
Blood Platelets
;
Calcium Chloride
;
Cytokines
;
Humans
;
Intercellular Signaling Peptides and Proteins
;
Plasma
;
Platelet Count
;
Platelet-Derived Growth Factor
;
Platelet-Rich Plasma
;
Proto-Oncogene Proteins c-sis
;
Regeneration
;
Thrombin
;
Transforming Growth Factors
6.Sulfuretin protects against cytokine-induced beta-cell damage and prevents streptozotocin-induced diabetes.
Mi Young SONG ; Gil Saeng JEONG ; Kang Beom KWON ; Sun O KA ; Hyun Young JANG ; Jin Woo PARK ; Youn Chul KIM ; Byung Hyun PARK
Experimental & Molecular Medicine 2010;42(9):628-638
NF-kappaB activation has been implicated as a key signaling mechanism for pancreatic beta-cell damage. Sulfuretin is one of the main flavonoids produced by Rhus verniciflua, which is reported to inhibit the inflammatory response by suppressing the NF-kappaB pathway. Therefore, we isolated sulfuretin from Rhus verniciflua and evaluated if sulfuretin could inhibit cytokine- or streptozotocin-induced beta-cell damage. Rat insulinoma RINm5F cells and isolated rat islets were treated with IL-1beta and IFN-gamma to induce cytotoxicity. Incubation of cells and islets with sulfuretin resulted in a significant reduction of cytokine-induced NF-kappaB activation and its downstream events, iNOS expression, and nitric oxide production. The cytotoxic effects of cytokines were completely abolished when cells or islets were pretreated with sulfuretin. The protective effect of sulfuretin was further demonstrated by normal insulin secretion of cytokine-treated islets in response to glucose. Treatment of mice with streptozotocin resulted in hyperglycemia and hypoinsulinemia, which was further evidenced by immunohistochemical staining of islets. However, the diabetogenic effects of streptozotocin were completely prevented when mice were pretreated with sulfuretin. The anti-diabetogenic effects of sulfuretin were also mediated by suppression of NF-kappaB activation. Collectively, these results indicate that sulfuretin may have therapeutic value in preventing beta-cell damage.
Animals
;
Benzofurans/*pharmacology/therapeutic use
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Cell Line
;
Cytokines/*adverse effects
;
Diabetes Mellitus, Experimental/drug therapy/*prevention & control
;
Flavonoids/pharmacology/therapeutic use
;
Hypoglycemic Agents/pharmacology/therapeutic use
;
Insulin-Secreting Cells/*drug effects
;
Male
;
Mice
;
Mice, Inbred ICR
;
NF-kappa B/*metabolism
;
Rats
;
Rats, Sprague-Dawley
;
Rhus/chemistry
7.Kidney Transplantation in a Patient with End Stage Renal Disease after Complete Remission of Acute Promyelocytic Leukemia.
Hyun Ji CHUN ; Su Jeong KIM ; In O SUN ; Byung Ha CHUNG ; Ji Il KIM ; In Sung MOON ; Woo Sung MIN ; Chul Woo YANG
Journal of Korean Medical Science 2012;27(7):814-817
In general, a 2-yr disease-free duration is recommended before kidney transplantation (KT) in end-stage renal disease (ESRD) patients who also have acute leukemia. However, the optimal disease-free interval has not been specified for all subtypes of acute leukemia. Among these subtypes, acute promyelocytic leukemia (APL) shows a favorable prognosis and low relapse rate compared to other types of leukemia. We here report KT after complete remission (CR) of APL in an ESRD patient. Irreversible kidney injury developed in a 23-yr-old man with APL. First, we induced CR and subsequently performed KT 7 months after the achievement of CR. The patient's clinical course after KT was favorable, without allograft rejection or relapse of APL up to1 yr after KT. On the basis of our clinical experience, it is suggested that a long wait may not be necessary before KT in patients with ESRD and APL.
Adult
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Antineoplastic Agents/therapeutic use
;
Arsenicals/therapeutic use
;
Bone Marrow Cells/pathology
;
Humans
;
Kidney Failure, Chronic/*therapy/ultrasonography
;
*Kidney Transplantation
;
Leukemia, Promyelocytic, Acute/*diagnosis/drug therapy
;
Male
;
Oxides/therapeutic use
;
Receptors, Retinoic Acid/genetics/metabolism
;
Remission Induction
8.The Experience and Management of Two Cases of Metformin-associated Lactic Acidosis.
Hyeuk Soo LEE ; Choong Sil SEONG ; Byung Sun KIM ; Woong Ki LEE ; Hye Mi CHOI ; Hyun Ju YOON ; Jeong Gwan KIM ; In O SUN ; Kwang Young LEE
Journal of the Korean Society of Emergency Medicine 2014;25(6):771-774
Metformin, a dimethylbiguanide, is an oral antihyperglycemic drug used in treatment of type 2 diabetes mellitus. It has been reported that metformin may be associated with lactic acidosis in patients with clinical conditions such as renal failure and heart failure. Metformin-associated lactic acidosis (MALA) is a rare, but serious complication with a mortality rate of approximately 30~50%. Therefore, an aggressive treatment strategy including hemodialysis is recommended for these patients. Although continuous renal replacement therapy (CRRT) has been administered in hemodynamically unstable patients with MALA, there are few case reports describing the use of CRRT as a therapeutic modality in Korea. Here, we describe the case histories of two MALA patients who underwent treatment with CRRT.
Acidosis
;
Acidosis, Lactic*
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Diabetes Mellitus, Type 2
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Heart Failure
;
Humans
;
Korea
;
Metformin
;
Mortality
;
Renal Dialysis
;
Renal Insufficiency
;
Renal Replacement Therapy
9.Idiopathic retroperitoneal fibrosis associated with Hashimoto's thyroiditis in a patient with a single functioning kidney.
Byung Sun KIM ; Woong Ki LEE ; Hye Mi CHOI ; Choong Sil SEONG ; Hyeuk Soo LEE ; Jeong Gwan KIM ; Min Woo KIM ; Kwang Young LEE ; In O SUN
Kidney Research and Clinical Practice 2013;32(4):183-185
Retroperitoneal fibrosis (RPF) is a rare disease characterized by the presence of fibroinflammatory tissue around the abdominal aorta and ureteral entrapment in most cases. Idiopathic RPF is frequently reported in association with autoimmune diseases; however, there have been few reports of idiopathic RPF associated with Hashimoto's thyroiditis. Here, we report a case of idiopathic RPF with Hashimoto's thyroiditis in a patient with a single functioning kidney, which was successfully treated by corticosteroid therapy and transient intraureteral stent insertion with a double-J catheter.
Aorta, Abdominal
;
Autoimmune Diseases
;
Catheters
;
Humans
;
Kidney*
;
Rare Diseases
;
Retroperitoneal Fibrosis*
;
Stents
;
Thyroid Gland*
;
Thyroiditis*
;
Ureter
10.Clinical significance of red blood cell distribution width in the prediction of mortality in patients on peritoneal dialysis.
In O SUN ; Byung Ha CHUNG ; Hyun Ju YOON ; Jeong Ho KIM ; Bum Soon CHOI ; Cheol Whee PARK ; Yong Soo KIM ; Chul Woo YANG ; Kwang Young LEE
Kidney Research and Clinical Practice 2016;35(2):114-118
BACKGROUND: In this study, we assessed whether red blood cell distribution width (RDW) was associated with all-cause mortality in patients on peritoneal dialysis (PD) and evaluated its prognostic value. METHODS: This study included 136 patients who had RDW levels at PD initiation from January 2007 to January 2014 at the Presbyterian Medical Center and Seoul St. Mary's Hospital. We divided these patients into 2 groups (survivors vs. nonsurvivors), compared their clinical characteristics, and analyzed the predictors of survival. RESULTS: The study included 79 men and 57 women, with a mean age of 54 years (range, 15-85 years). The mean follow-up duration was 32 months (range, 1-80 months). Of 136 patients, 14 died during the follow-up period. When clinical characteristics of survivors (n = 122) and nonsurvivors (n = 14) were compared, no differences were identified, with the exception of serum albumin, total iron-binding capacity (TIBC), left ventricular ejection fraction, total leukocyte count, and RDW value. Survivors had higher serum albumin (3.4 ± 0.5 vs. 3.0 ± 0.5 g/dL, P < 0.001) and left ventricular ejection fraction (56.8 ± 9.8 vs. 48.7 ± 12.8, P = 0.040) and lower TIBC (213.4 ± 40.9 vs. 252.8 ± 65.6, P = 0.010), total leukocyte counts (6.9 × 103/μL vs. 8.6 × 103/μL, P = 0.009), and serum RDW values (13.9 ± 1.7 vs. 16.0 ± 1.8, P < 0.001). Patients with high RDW levels (≥ 14.8) showed significantly higher all-cause mortality than patients with low RDW levels (< 14.8, P < 0.001). In multivariate-adjusted Cox analysis, RDW and TIBC at the start of PD were independent risk predictors for all-cause mortality. CONCLUSION: RDW could be an additive predictor for all-cause mortality in patients on PD.
Erythrocyte Indices
;
Erythrocytes*
;
Female
;
Follow-Up Studies
;
Humans
;
Leukocyte Count
;
Male
;
Mortality*
;
Peritoneal Dialysis*
;
Protestantism
;
Seoul
;
Serum Albumin
;
Stroke Volume
;
Survivors