1.Experimental study of interstitial Nd:YAG laser hyperthermia on rabbit tongue mucosa.
Youn Woo NAM ; Kwang Yoon JUNG ; Jong Ouck CHOI
Korean Journal of Otolaryngology - Head and Neck Surgery 1993;36(5):977-989
No abstract available.
Fever*
;
Mucous Membrane*
;
Tongue*
2.Studies on retrobulbar optic neuritis: I. Clinical findimgs.
Chang Shoo CHOI ; Jung Woo YOUN ; Jong Won RHEE
Journal of the Korean Ophthalmological Society 1966;7(2):27-31
Authors experienced 100 cases of retrobulbar optic neuritis among the patients who visited the Chang Shoo Choi Eye Clinic during the last 2 years, from September 1, 1964 to August 31, 1966. The chief complaints are asthenopia, blurring vision, ocular pain, headache and photophobia. Of 100 cases, 46 cases wanted to be refracted. The corrected visual acuities are not always poor, though they are very variable from time to time as the tests are processing. The most cases revealed central relative scotomas instead of cecocentrals as previously believed. Fields are taken with glasses if corrected. In our cases, the age distribution of the patients are very interesting, the most susceptible age groups are 11~13 years.
Age Distribution
;
Asthenopia
;
Eyeglasses
;
Glass
;
Headache
;
Humans
;
Optic Neuritis*
;
Photophobia
;
Scotoma
;
Vision, Ocular
;
Visual Acuity
3.A Case of Conjoined Twin.
Ji Young PARK ; Keun Mo KIM ; Seung Hee CHOI ; Young Youn CHOI ; Sang Young JUNG
Korean Journal of Perinatology 1997;8(2):207-212
Conjoined twins occur when there is imcomplete fission of the inner cell mass later at approximately 13 to 15 days after fertilization. The earlist case in the literat.ure appears to be that of the Biddenden Maids who were born in England in 1100. since then over two hundred cases of successful separation were reported on literature. And also successful separation cases were reported by Seung et al.(1991) in Korea. Conjoined twins occur between one in 50,000 to 100,000 births but real incidence is one in 200,000 because two thirds are stillbirth or died immediately after birth. The conjoined twins are not associated with maternal age, race or family history and 70 % of them are females. We experienced a case of conjoined twins with omphalopagus and performed surgical separation. A brief review of related literatures was done.
Animals
;
Continental Population Groups
;
England
;
Female
;
Fertilization
;
Humans
;
Incidence
;
Korea
;
Maternal Age
;
Murine Acquired Immunodeficiency Syndrome
;
Parturition
;
Stillbirth
;
Twins, Conjoined*
4.Delayed-Onset Expulsive Suprachoroidal Hemorrhage Due to a Trauma after Removal of Penetrating Keratoplasty Suture.
Journal of the Korean Ophthalmological Society 2011;52(3):359-363
PURPOSE: To report a case of delayed-onset expulsive suprachoroidal hemorrhage due to trauma after removal of a penetrating keratoplasty suture. CASE SUMMARY: A 66-year-old man had penetrating keratoplasty for bullous keratopathy performed in his left eye. After 1 year, the continuous suture was removed for adjustment of astigmatism. Four days after removal of the suture, the patient struck his left eye with the back of his hand, although at the time of injury he had no specific symptoms. Two days later, the patient noticed abrupt pain, decreased visual acuity, and massive hemorrhage in his left eye. Examination revealed an inferior wound dehiscence of approximately 8 clock hours (2 thru 10 o'clock) with prolapsed intraocular contents such as the uvea and retina. The patient underwent cornea graft resuturing with resection of ocular contents, which could not be repositioned. Although bleeding was controlled after the operation, vision was lost in his left eye. After two months, according to decrement of intraocular hematoma, the patient had a phthisis bulbi with low intraocular pressure in his left eye. CONCLUSIONS: Persistent low intraocular pressure due to wound leakage through the graft-host junction likely resulted in delayed onset of expulsive suprachoroidal hemorrhage. The risk of traumatic corneal graft rupture after penetrating keratoplasty is significant and is associated with a poor visual outcome and eyeball viability. Therefore, patients should be cautioned. In addition, the importance of eye examination after trauma should be emphasized.
Aged
;
Astigmatism
;
Cornea
;
Eye
;
Hand
;
Hematoma
;
Hemorrhage
;
Humans
;
Intraocular Pressure
;
Keratoplasty, Penetrating
;
Retina
;
Rupture
;
Sutures
;
Transplants
;
Uvea
;
Vision, Ocular
;
Visual Acuity
5.Congenital Pericardial Defect, A Report of Two Cases.
Young Sook LEE ; Chang Youn LEE ; Young Hwue KIM ; Jung Yun CHOI
Journal of the Korean Pediatric Society 1990;33(5):680-683
No abstract available.
6.A Clinical Study on he Intestinal Tuberculosis in Children.
Young Ran CHOI ; Youn Ha KANG ; Young Min AHN ; Kyo Sun KIM ; Jung Kee SEO
Journal of the Korean Pediatric Society 1983;26(11):1063-1069
No abstract available.
Child*
;
Humans
;
Tuberculosis*
7.Bone Changes in Childhood Leukemia.
In Soo CHOI ; Jong Soo KIM ; Jung Soo KIM ; Kyu Cha KIM ; Yea Seong YOUN
Journal of the Korean Pediatric Society 1983;26(2):143-149
No abstract available.
Leukemia*
8.Evaluation of Focal Bone Mineral Density Using Three-dimensional Measurement of Hounsfield Units in the Proximal Humerus.
Young Lae MOON ; Sung JUNG ; Sang Ha PARK ; Gwi Youn CHOI
Clinics in Shoulder and Elbow 2015;18(2):86-90
BACKGROUND: Although there are several methods for evaluating bone quality, Hounsfield units (HU), a standardized computed tomography (CT) attenuation coefficient, provide a useful tool for estimating focal bone mineral density (BMD). The aim of this study is to investigate the HU for evaluating the degree of osteoporosis in greater tuberosity with regard to anchor positioning. METHODS: Forty patients diagnosed as normal on shoulder CT were included and categorized according to age and gender. Axially sectioned CT images were processed to 3-dimensional models containing information about bone quality using Mimics (14.11 platform v14.1.1.1 Materialise). Three-dimensional anchors were simulated and positioned according to 6 regions of interest (ROI) in the greater tuberosity classified using Tingart's system. Mean HU of intra-anchor volumes in the 6 regions was measured. RESULTS: A significant decrease in HU was observed with increasing age (p=0.0001) and menopause (p<0.001). A significant difference in HU was found between male and female groups with males showing the higher values (p=0.0001). HU of proximal areas of ROI was higher than those of distal areas (p<0.005). However, although mean HU of distal posterior ROI showed the lowest values, no statistically significant difference was found between anterior, middle, and posterior regions (p=0.087). CONCLUSION: Mean HU of ROIs provides a tool for preoperative assessment of focal BMD, which is a factor of suture anchor stability and can be used to aid decision-making regarding secure anchor positioning for rotator cuff repair. Our data support that the most secure point is the proximal regions of ROI.
Bone Density*
;
Female
;
Humans
;
Humerus*
;
Male
;
Menopause
;
Osteoporosis
;
Rotator Cuff
;
Shoulder
;
Suture Anchors
9.Usefulness of Lung Perfusion Scan for the Evaluation of Pulmonary Arteries after Total Correction of Right Ventricular Outflow Obstructive Disease.
Youn Woo KIM ; Ho Sung KIM ; Chung Il NOH ; Jung Yun CHOI ; Yong Soo YUN
Korean Circulation Journal 1995;25(3):648-652
BACKGROUND: For the evaluation of pulmonary nrtery branches after operation of right ventricular outflow obstructive disease, we reviewed the usefulness of both simple X-ray and lung perfusion scan with 99mTc-macroaggregated albumin compared with cardiac angiography. METHODS: From March, 1986 to July, 1993, at Seoul National University Children;s Hospital, we chose 23 cases who underwent both simple X-ray and cardiac angiography among the patients who had distinct difference between right and left pulmonary blood flow in lung perfusion scan after operation of right ventricular outflow obstructive disease. So we calculated the ratio of right and left pulmonary blood flow and Spearman correlation coefficient. RESULTS: Of the 23 cases, 17 cases were tetralogy of Fallot, 4 cases pulmonary atresia, 1 case double outlet right ventricle, and 1 case truncus arteriosus. The mean age at poeration was 27 months, and the mean postoperative follow-up period was for 68 months. The correlation coefficient between cardiac angiography and simple X-ray was 0.86(p<0.01), and that beteen cardiac angiography and lung perfusion scan was 0.80(p<0.01). CONCLUSION: The cardiac angiography has been known as the best diagnostic tool for the evaluation of pulmonary artery branches after operation of right ventricular outflow obstructive ddisease, but we proposed that the lung perfusion scan should be widely used because its results were similar with those of cardiac angiography.
Angiography
;
Double Outlet Right Ventricle
;
Follow-Up Studies
;
Humans
;
Lung*
;
Perfusion*
;
Pulmonary Artery*
;
Pulmonary Atresia
;
Seoul
;
Tetralogy of Fallot
;
Truncus Arteriosus
10.Evaluation of Blood Volume State Using the Quotient of Urine Sodium and Potassium Excretion in Primary Nephrotic Syndrome in Children.
Jung Youn CHOI ; Yong Hoon PARK
Journal of the Korean Society of Pediatric Nephrology 2007;11(1):9-15
PURPOSE: Edema is one of the cardinal features of nephrotic syndrome. Although the pathogenesis of edema is not entirely understood, it is caused by hypovolemia or hypervolemia by different mechanisms. Accordingly it is important to evaluate the volume status of patients in order to treat the edema, but it is difficult to evaluate the patient's volume status only by clinical parameters. The quotient of urine sodium and potassium excretion UK/(UNa+UK) is introduced as a more useful way to evaluate volume status. In this study we will propose the usefulness of UK/(UNa+UK) in evaluating the volume status of children with nephrotic syndrome. METHODS: Primary nephrotic syndrome patients at Yeungnam University Hospital since January 1995 to June 2005, were included in the study. We analyzed clinical parameters such as tachycardia, cardiomegaly, pleural effusion, blood chemistry and urinalysis prospectively. We defined hypovolemia when UK/(UNa+UK) exceeded 60%. Intravenous albumin and diuretics were administered to hypovolemic edematous patients. On the other hand, hypervolemic edematous patients were treated only with diuretics. RESULTS: There were 50 cases of primary nephrotic syndrome patients(hypervolemia: 29 vs hypovolemia: 21). There were no significant differences in clinical symptoms and laboratory findings except for FeNa. While FeNa and UK/(UNa+UK) had a significant negative correlation, BUN and UK/(UNa+UK) had a significant positive correlation. Urine output after edema treatment was effective and there were no treatment-related side effects in both groups. CONCLUSION: FeNa, BUN and UK/(UNa+UK) are a useful parameters for evaluating volume status of edematous nephrotic syndrome patients. We could suggest a therapeutic option for using albumin and/or diuretics according to volemic status by means of measured UK/(UNa+UK).
Blood Volume*
;
Cardiomegaly
;
Chemistry
;
Child*
;
Diuretics
;
Edema
;
Hand
;
Humans
;
Hypovolemia
;
Nephrotic Syndrome*
;
Pleural Effusion
;
Potassium*
;
Prospective Studies
;
Sodium*
;
Tachycardia
;
Urinalysis