1.Studies on expression of DNA topoisomerases genes and protooncogene c-Myc during hepatocarcinogenesis.
Byung Doo HWANG ; Sang Hee WON ; Ki Ryang KWON ; Kye Young KIM ; Dae Young KANG ; Sang Tae KWAK ; Kyoo LIM
Journal of the Korean Cancer Association 1993;25(5):636-650
No abstract available.
DNA Topoisomerases*
;
DNA*
2.Pathologic Correlation To Internal Echogenicity of Atypical Breast Fibroadenoma.
Nariya CHO ; Ki Keun OH ; Ryang KWON ; Jae Ho HAN ; Woo Hee JUNG ; Hy De LEE
Journal of the Korean Radiological Society 1998;39(1):185-191
PURPOSE: To understand the cause of atypical sonograpic findings by analyzing their pathologic correlation tointernal echogenicity of breast fibroadenoma. MATERIALS AND METHODS: Between January 1995 and April 1997, thepresence of 91 fibroadenomas in 81 patients was histopathologically proven. These mass lesions weresonographically interpreted and their descriptive criteria-internal echo content (both strength and homogeneity),the presence of septum, bilateral shadowing, and posterior echo pattern-were tabulated. A pathologist reviewedeach case and independently recorded the following data : cell type, the presence of septum, duct dilatation,calcification, fibrosis, hyalinization, and vascularity. We analyzed the correlation of sonographic withpathologic findings. RESULT: There was significant correlation between increased vascularity and increasedinternal echo strength and between increased fibrosis and decreased internal echo strength. There was nosignificant correlation between internal echo homogeniety or posterior shadowing and vascularity or stromalfibrosis, nor between hyalinization or cell type and internal echo strength, homogeneity or posterior shadowing.There was correlation between absent or thin capsule and the absence of bilateral shadowing. CONCLUSION: Increased vascularity or decreased stromal fibrosis might be the cause of atypical fibroadenoma.
Breast*
;
Fibroadenoma*
;
Fibrosis
;
Humans
;
Hyalin
;
Shadowing (Histology)
;
Ultrasonography
3.Effects of Etomidate, Thiopental Sodium and Propofol on Intraocular Pressure Associated with Tracheal Intubation.
Kyu Sik KANG ; Kyung Ho BANG ; Ki Ryang AHN ; Jin Hyung KWON ; Jung Suk LEE
Korean Journal of Anesthesiology 2005;48(6):582-586
BACKGROUND: During ophthalmologic surgery, various intravenous anesthetic induction agents are used to prevent an intraocular pressure (IOP) increase. This study was designed to compare the effects of etomidate on IOP with those of thiopental sodium and propofol in patients receiving vecronium bromide, and in whom tracheal intubation was performed. METHODS: Forty-five patients undergoing elective surgery were ramdomized to receive etomidate 0.3 mg/kg (E group, n = 15), thiopental sodium 5 mg/kg (T group, n = 15) or propofol 2.5 mg/kg (P group, n = 15). IOP, systolic arterial pressure (SAP) and heart rate (HR) were measured before induction (B), after the adminstration of the induction agents (I1), before intubation (I2) and at 1, 2 and 3 mins after intubation (T1, T2 and T3). RESULTS: The IOP after I1 and I2 in the E , T and P groups were significantly lower than in group B (P < 0.05). The IOP at T1, T2 and T3 in the E, T and P groups were not found to be significantly different from group B. The IOP, SAP and HR at T1, T2, and T3 in the E, T and P groups were significantly higher than at I1 and I2 (P < 0.05). No significant differences were observed between the groups in term of IOP. The SAP and HR at T1, T2 and T3 in the P group were significantly lower than in the other two groups (P < 0.05). CONCLUSIONS: We concluded that etomidate, thiopental sodium and propofol may be useful induction agents for general anesthesia in ophthalmologic surgery but that they do not prevent IOP elevation during endotracheal intubation.
Anesthesia, General
;
Arterial Pressure
;
Etomidate*
;
Heart Rate
;
Humans
;
Intraocular Pressure*
;
Intubation*
;
Intubation, Intratracheal
;
Propofol*
;
Thiopental*
4.The Effects of Neostigmine added to Ropivacaine for Intravenous Regional Anesthesia.
Kyu Sik KANG ; Sung Hak JUNG ; Ki Ryang AHN ; Chun Suk KIM ; Ji Eun KIM ; Si Hyun YOO ; Jin Hyung KWON
Korean Journal of Anesthesiology 2004;47(5):649-654
BACKGROUND: Neostigmine has been added to local anesthetic regimen for epidural or intrathecal block, and this resulted in prolonged and improved analgesia, but evidence of its benefit in intravenous regional anesthesia (IVRA) is controversial. The purpose of this study was to evaluate the effects of neostigmine added to ropivacaine for IVRA. METHODS: Forty patients undergoing hand or forearm surgery were randomly assigned to two groups to receive IVRA: Group I received 40 ml of 0.2% ropivacaine plus 1 ml of normal saline, and group II received 40 ml of 0.2% ropivacaine plus 500microgram (1 ml) of neostigmine. Sensory block onset time, postoperative visual analogue scale (VAS) scores, recovery time from motor block after deflation, mean arterial pressure (MAP), heart rate (HR), and pulse oximeter saturation (SpO2) values were measured. The incidence of side effects was recorded. RESULTS: Group II had a shorter sensory block onset time, a prolonged motor block recovery time, and lower postoperative VAS scores. No significant difference was found between the two the groups in terms of MAP, HR, SpO2 and side effects. CONCLUSIONS: The addition of neostigmine to ropivacaine in IVRA is believed to be a useful effective method for outpatient arm surgery due to a shortened sensory onset time and improved postoperative analgesia.
Analgesia
;
Anesthesia, Conduction*
;
Arm
;
Arterial Pressure
;
Forearm
;
Hand
;
Heart Rate
;
Humans
;
Incidence
;
Neostigmine*
;
Outpatients
5.Comparison of the Detection Rate, Location and Amount of Retinal Nerve Fiber Layer Defect.
Young Rae ROH ; Ji Won KWON ; Young Keun HAN ; Won Ryang WEE ; Jin Hak LEE ; Ki Ho PARK
Journal of the Korean Ophthalmological Society 2011;52(2):210-215
PURPOSE: To compare the detection rate of the patients with retinal nerve fiber layer (RNFL) defect and the amount of RNFL defect according to the patients' age. METHODS: Retrospective chart reviews of 22,811 subjects, who visited the health care center from January 2009 to December 2009 were performed. The detection rate, location and average amount of RNFL defect and the proportions of the patients who were diagnosed with glaucoma through Humphrey visual field (HVF) test or determined as a glaucomatous optic disc were compared according to the patients' age. RESULTS: The proportions of the patients whose RNFL defect were detected was highest in the patients 60 years old or older (2.3%) and was statistically significant (p = 0.012). However, there was no significant difference among the other age groups (under 40 years: 1.7%, 40 thru 49 years: 1.5%, 50 thru 59 years: 2.0%). The proportions of the patients who were determined as glaucoma through the HVF test or glaucomatous optic disc were also highest in the patients 60 years old or older (1.4%), however, there was no statistically significant difference (p = 0.070) among the age groups (under 40 years: 1.1%, 40 thru 49 years: 0.9%, 50 thru 59 years: 1.2%). CONCLUSIONS: The RNFL defect is likely to be detected in subjects less than 40 years of age and the detection rate is similar to subjects in their 40's and 50's. The use of fundus photography to detect RNFL defect in a health care center is recommended in subjects under 40 years of age.
Delivery of Health Care
;
Glaucoma
;
Humans
;
Nerve Fibers
;
Photography
;
Retinaldehyde
;
Retrospective Studies
;
Visual Fields
6.The Epidemiology of Cosmetic Treatments for Corneal Opacities in a Korean Population.
Ki Cheol CHANG ; Ji Won KWON ; Young Keun HAN ; Won Ryang WEE ; Jin Hak LEE
Korean Journal of Ophthalmology 2010;24(3):148-154
PURPOSE: To describe etiologies and clinical characteristics of corneal opacities leading patients to seek cosmetic treatments. METHODS: The medical records of 401 patients who presented for cosmetic improvement in corneal opacities between May 2004 and July 2007 were retrospectively reviewed. The following parameters were analyzed: age, gender, cause of corneal opacity, time course of the corneal disease, associated diseases, prior and current cosmetic treatments, visual acuity, location and depth of the corneal opacity, and the presence of either corneal neovascularization or band keratopathy. A single practitioner examined all patients. RESULTS: The most common causes of corneal opacity were ocular trauma (203 eyes, 50.6%), retinal disease (62 eyes, 15.5%), measles (38 eyes, 9.5%), and congenital etiologies (22 eyes, 5.5%). Prior treatments included iris colored contact lenses (125 eyes, 31.1%) and corneal tattooing (34 eyes, 8.46%). A total of 321 of 401 eyes underwent cosmetic treatment for corneal opacities. The most common treatment performed after the primary visit was corneal tattooing (261 eyes, 64.92%). CONCLUSIONS: This is the first study to investigate the causes and clinical characteristics of patients presenting for cosmetic treatment of corneal opacities rather than for functional improvement. Various cosmetic interventions are available for patients with corneal opacities, and these should be individualized for the needs of each patient.
Adolescent
;
Adult
;
Aged
;
Aged, 80 and over
;
Asian Continental Ancestry Group/*statistics & numerical data
;
Color
;
Contact Lenses/statistics & numerical data
;
Corneal Opacity/*ethnology/etiology/*therapy
;
Esthetics
;
Female
;
Humans
;
Male
;
Middle Aged
;
Retrospective Studies
;
Surgery, Plastic/*statistics & numerical data
;
Tattooing/statistics & numerical data
;
Young Adult
7.Comparisons of Propofol, Enflurane, Sevoflurane, and Desflurane Anesthesia in Laparoscopic Cholecystectomy on Postoperative Liver Enzyme Levels.
Joo Hee YOON ; Sung Hwan CHO ; Chun Sook KIM ; Ki Ryang AHN ; Jin Hyung KWON ; Kyu Sik KANG ; Sie Hyun YOU
Korean Journal of Anesthesiology 2005;49(1):18-24
BACKGROUND: Many factors cause postoperative hepatic dysfunction, and anesthetic agents and type of surgery are belived to contribute to hepatic dysfunction. The authors planned this study to evaluate the effect of different anesthetic agents (sevoflurane, desflurane, enflurane or propofol) on liver enzymes in the patients who undergone laparoscopic cholecystectomy. METHODS: 80 patients were randomly selected from among those who had undergone cholecystectomy and divided into 4 groups; an enflurane group (n = 20), a sevoflurane group (n = 20), a desflurane group (n = 20) and a propofol group (n = 20). Preoperative values of aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) were compared with those on postoperative days 1 and 3 in all groups. RESULTS: In all groups, ALT and AST were significantly elevated after operation, and then showed a decrease 3 days after operation, but remainrd of above preoperative levels (P < 0.05). However, no differences were observed between the 4 groups (P < 0.05). CONCLUSIONS: We consider that propofol, sevoflurane, desflurane and enflurane are equally usable and that they have little effect on liver function after laparoscopic cholecystectomy.
Alanine Transaminase
;
Alkaline Phosphatase
;
Anesthesia*
;
Anesthetics
;
Aspartate Aminotransferases
;
Cholecystectomy
;
Cholecystectomy, Laparoscopic*
;
Enflurane*
;
Humans
;
Liver*
;
Propofol*
8.A case of systemic lupus erythematosus associated with Hashimoto's thyroiditis and aplastic anemia.
Oh Kyung KWON ; Jae Hoon JUNG ; Young Mo LEE ; Ki Ryang NA ; Deog Yeon JO ; Kang Wook LEE ; Young Tai SHIN
Korean Journal of Medicine 2006;70(6):715-718
We report a 45-year-old female who presented with azotemia, pancytopenia, pericardial effusion, hypothyroidism, decreased complement and positive ANA and was diagnosed as systemic lupus erythematosus (SLE). She referred to our hospital for the evaluation of azotemia. Bone marrow findings were compatible with aplastic anemia and Hashimoto's thyroiditis was diagnosed. After 3 days of methylprednisolone pulse therapy, the aplastic anemia responded and started to improve. She is visiting our clinic on a regular interval and showing good response to maintenance therapy. Hashimoto's thyroiditis is not rare in SLE, and aplastic anemia is relatively rare in SLE but, SLE that is combined with Hashimoto's thyroiditis and aplastic anemia simultaneously, has not been reported as far as our knowledge concerned. So, we report a case of successful treatment of SLE combined with Hashimoto's thyroiditis and aplastic anemia by steroid and thyroxine.
Anemia, Aplastic*
;
Azotemia
;
Bone Marrow
;
Complement System Proteins
;
Female
;
Hashimoto Disease
;
Humans
;
Hypothyroidism
;
Lupus Erythematosus, Systemic*
;
Methylprednisolone
;
Middle Aged
;
Pancytopenia
;
Pericardial Effusion
;
Thyroid Gland*
;
Thyroiditis*
;
Thyroxine
9.A Case of Septic Pulmonary Embolism in an End-Stage Renal Failure Patient with Infected Arterio-venous Graft for Hemodialysis.
Oh Kyung KWON ; Hong Jin BAE ; Won IK JANG ; Sarah CHUNG ; Dae Eun CHOI ; Ki Ryang NA ; Kang Wook LEE ; Young Tai SHIN
Korean Journal of Nephrology 2010;29(6):829-833
Septic pulmonary embolism (SPE) is different from non-infectious thromboembolism in that it causes pulmonary arterial obstruction and inflammation by infectious emboli from various sources. There are increased risks of SPE in patients with chronic kidney disease because of decreased immunity and frequent venous puncture with the use of indwelling venous catheters or arterio-venous graft (AVG). However, SPE related with AVG infection in end-stage renal failure patient is very rare. Recently, we experienced a typical case of septic pulmonary embolism occurring in a 57-year-old man with infected AVG during hemodialysis. The patient had started hemodialysis 10 years ago due to diabetic end stage renal failure. Due to functional failure of the arterio-venous fistula, hemodialysis had been performed through an AVG on the upper left arm 3 years before admission.
Arm
;
Arteriovenous Fistula
;
Blood Vessel Prosthesis
;
Catheters
;
Fistula
;
Humans
;
Inflammation
;
Kidney Failure, Chronic
;
Middle Aged
;
Pulmonary Embolism
;
Punctures
;
Renal Dialysis
;
Renal Insufficiency
;
Renal Insufficiency, Chronic
;
Sepsis
;
Thromboembolism
;
Transplants
10.Bilateral Cortical Blindness Due to Parieto-Occipital Infarction after General Anesthesia: A case report.
Ki Ryang AHN ; Jong Kuk CHOI ; Chun Suk KIM ; Kyu Sik KANG ; Ji Eun KIM ; Si Hyun YOO ; Jin Hyung KWON
Korean Journal of Anesthesiology 2004;47(1):122-125
Cortical blindness is characterized by visual sensation loss with retention of pupillary reaction to light, and a normal fundoscopic examination. The suggested causes are emboli, profound hypotension, anemia, and infarction of watershed areas in the parietal or occipital lobe. We experienced a case of cortical blindness with severely reduced visual acuity after penile cancer surgery under general anesthesia. In the acute stage, visual acuity was slightly improved, but over the course of several months, no further improvement in visual acuity occurred. In this case there was no severe hypotension or anemia during the operation. Two days after the operation, electroencephalography (EEG) was performed during the period of blindness and the recording obtained was abnormal, with no alpha rhythm. Biparieto-occipital lucency was found by magnetic resonance imaging (MRI). Therefore parieto-occipital infarction due to seizure, embolus, or thrombosis could be considered a possible etiology. We concluded that cortical blindness can unexpectedly develop perioperatively and postoperatively, and that close monitoring of the patient and adequate management are essential.
Alpha Rhythm
;
Anemia
;
Anesthesia, General*
;
Blindness
;
Blindness, Cortical*
;
Electroencephalography
;
Embolism
;
Humans
;
Hypotension
;
Infarction*
;
Magnetic Resonance Imaging
;
Male
;
Occipital Lobe
;
Penile Neoplasms
;
Rabeprazole
;
Seizures
;
Sensation
;
Thrombosis
;
Visual Acuity