1.Views of Korean Medical Students on the Medical Education and Medical Care.
Kyung Hwan KIM ; Jung Han PARK
Journal of the Korean Medical Association 1999;42(3):234-237
No abstract available.
Education, Medical*
;
Humans
;
Students, Medical*
2.Fatigue Failure of Wire in Orthopaedic Use
In KIM ; Han CHANG ; Kyung Hwan CHOI
The Journal of the Korean Orthopaedic Association 1988;23(5):1350-1356
Orthopaedic wire has been used widely as a good internal fixator in cases of fracture, the ligament reconstruction, and for the stabilization of cervical spine. But if it is used inappropriately, a wire can be easy to fail by elongation, untwisting, or breakage. Among them, the most common failure of wire is breakage. To clarify the mechanism and the causes of wire failure, the authors analysed serial roentgenograms and scanning electronmicroscopic findings of broken wire in total 13 cases, which were experienced at the department of orthopaedic surgery, St. Mary's Hospital, Catholic University Medical College From January 1981 to December 1987. The results obtained were as follows :1. The mechanism of wire failure were classified into the 4 types ; minor continual flexing motion in 6 cases, repeated minor back and forth torsion in 1 case, tension failure in 2 cases and combined type in 4 cass. 2. The causes of wire failure were in appropriate use and inadequte application, a lack of s ufficient mechanical strength, micromotion due to inadequate postoperative imm obilization, early mobilization before tissue healing as well as certain injuries to the wire during handling in operation.
Early Ambulation
;
Fatigue
;
Internal Fixators
;
Ligaments
;
Spine
3.Hydroxyapatite-Coated Primary Total Hip Arthroplasty: Minimum two year clinical and roentgenographic analysis
Chang Dong HAN ; Kyung Hwan YOUN
The Journal of the Korean Orthopaedic Association 1996;31(2):319-327
Plasma sprayed coating of the hydroxyapatite(HA) are biocompatible and may contribute to the early fixation of total joint prosthesis. We studied 64 hips(58 patients) who had hydroxyapatite coated primary total hip arthroplasty during the period from January 1992 to June 1993 about clinical and radiological result prospectively. The components have been followed for a minimum of 26 months and an average 31 months. Harris hip score averaged 92 at most recent follow up intervals. At the last follow up, the pain in 7 cases(11%) respectively and only slightly to mild in mostly. Although thigh pain has been occurred in 7 cases(11%), all patients had not trouble in daily activity. In radiological evaluation, there was a rapid and good endosteal bone formation of implants with bone apposition on the Gruen zone 2 and 6 of HA coating area. No radiolucent line formation was detected around HA coated area. In acetabular component, the endosteal bone formation was found in 12 cases and the radiolucent line was occurred in 4 cases. No revision were done for the femoral and acetabular component. The result of the study indicate that this hydroxyapatite coated component can provide satisfactory clinical and radiological result. Further prospective follow up is necessary to determine whether the favorable early result of this implant are maintained over longer period.
Acetabulum
;
Arthroplasty, Replacement, Hip
;
Durapatite
;
Follow-Up Studies
;
Hip
;
Humans
;
Joint Prosthesis
;
Osteogenesis
;
Plasma
;
Prospective Studies
;
Thigh
4.A Clinical Study on the Incompetent Internal Os of the Cervix.
Kyung Hwan HAN ; Jung Don PARK ; Chi Dong HAN
Korean Journal of Obstetrics and Gynecology 1997;40(1):140-145
The 68 cervical cerclage operations of incompetent internal os of the cervix(IIOC) were performed at the Taegu Catholic Medical Center from Jan. 1, 1990 to Dec. 31, 1995. The results of this study were as follows: 1. The incidence of operation for IIOC was 0.23% of total delivery. 2. Highest number of IIOC was observed in the age group of 25 to 29, and the average number of pregnancy before operation was 4.1. 3. The significant contributory factor was previous history of the induced or spontaneous abortion. 4. In all cases, cerclage method was McDonald operation. 5. The average fetal salvage rate after operation was 82.5% and from the 14th week to 16th week of gestation(43 cases), the success rate of operation was 85%. 6. The causes of operation failure were premature labor in 6 cases(55%), premature rupture of membrane in 3 cases(27%) and abortion in 2 cases(18%) in order.
Abortion, Spontaneous
;
Cerclage, Cervical
;
Cervix Uteri*
;
Daegu
;
Female
;
Humans
;
Incidence
;
Membranes
;
Obstetric Labor, Premature
;
Pregnancy
;
Rupture
5.MR imaging of dural sinus thrombosis: A case report.
Si Kyung LEE ; Chun Hwan HAN ; Moon Ok LEE ; Kyung Joo PARK ; Joo Hyuk LEE
Journal of the Korean Radiological Society 1993;29(1):51-54
We present a case of angiographically-confirmed transverse and sigmoid sinus thrombosis, image with MR, in a 20 year old male with a history of otitis media and maxillary sinusitis. T1-weighted image demonstrated an isosignal intensity mass with tubular-shaped low signal intensity in right transverse and sigmoid sinus. The thrombus had high signal intensity on T2-weighted image. The signal intensity of the thrombus on Gd-DTPA enhanced T1-weighted image was unusually high similar to that of transverse sinus. Although dural sinus thrombosis has a non-specific MR signal intensity, findings of MRI in this case may serve as an aid in future evaluation of venous thrombosis.
Colon, Sigmoid
;
Gadolinium DTPA
;
Humans
;
Magnetic Resonance Imaging*
;
Male
;
Maxillary Sinus
;
Maxillary Sinusitis
;
Otitis Media
;
Sinus Thrombosis, Intracranial*
;
Thrombosis
;
Venous Thrombosis
6.The Comparison Study of teh Effect of Ambroxol on Prevention of Infantile Respiratory Distress Syndrome in Preterm Delivery.
Kyung Hwan HAN ; Jung Don PARK ; Chi Dong HAN ; Chang Gyu HUH ; Soon Gu HWONG
Korean Journal of Perinatology 1997;8(1):21-26
This study was conducted to evaluate the effect of ambroxol on preventing the infantile respiratory distress syndrome (IRDS) in preterm birth at the Dept. of Obstetrics and Gynecology of Taegu Catholic Medical Center during the period from Jan. 1996 to Dec. 1996. Total of 68 cases were evaluated including 16 ambroxol group and 52 control group. The result were as follows : 1. In the comparison of preventing IRDS, there was 0 case of IRDS in ambroxol group and 7 cases of IRDS in control group (13.46 %). There was a significant difference between two groups (p<0.05). 2. The side effects of ambroxol after administration were nausea in 5 cases, headache in 3 cases, and chest discomfort in 4 cases, but these were not serious and self controlled. 3. There was no significant difference in neonatal morbidity between two groups (p > 0.05).
Ambroxol*
;
Daegu
;
Gynecology
;
Headache
;
Nausea
;
Obstetrics
;
Premature Birth
;
Respiratory Distress Syndrome, Newborn*
;
Thorax
7.A study on CT stage of cervix cancer
Kyung Hi LEE ; Ki Hwan KIM ; Ki Hyeun CHANG ; Seong Hwan HA ; Charn Il PARK ; Man Chung HAN
Journal of the Korean Radiological Society 1982;18(4):850-858
CT findings and comparison between clinical and CT staging were reviewed in 45 consecutive patients withbiopsy proven carcinoma of the cervix. CT was done for staging of primary untreted cercial cancer in 36 patientsand for diagnosis of recurrent cervical cancer or follow-up study 14 times in 9 patients . The results are asfollows; 1. As comparing with clinical staging in 36 cases, CT agreed with clinical stage in 19 cases (52.8%),upstaged in 10 cases(27.8%) and downstaged inn 7 cases (19.4%). 2. The main upstaged CT findings are detection ofunsuspected bladder or rectal invasion and paraaortic lymph node metastasis. Inadequate delineation ofintravaginal tumor was the leading causes of understage of CT than clinical one. 3. CT detected all 10 cases ofthe hydronephrosis shown by IVP and detected unsuspected bladder invasion in 3 cases. 4. CT was valuable in thediagnosis of recurrent tumor and follow-up study after treatment. 5. CT offeres distinct advantages over clinicalstaging and can be integrated into the present FIGO classification of uterine cervix carcinoma. CT can served asan initial radiological staging work-up of primary of recurrent cervical carcinoma.
Cervix Uteri
;
Chungcheongnam-do
;
Classification
;
Diagnosis
;
Female
;
Follow-Up Studies
;
Humans
;
Hydronephrosis
;
Lymph Nodes
;
Neoplasm Metastasis
;
Urinary Bladder
;
Uterine Cervical Neoplasms
8.The Treatment of the Macular Holes with Specific Causative Factors by Removal of the Posterior Hyaloid Membrane during Total Vitrectomy.
Han Nam YANG ; Kyung Hwan SHYN
Journal of the Korean Ophthalmological Society 1995;36(12):2142-2148
Total vitrectomy and removal of the posterior hyaloid membrane were done in 7 patients who were diagnosed as macular hole with specific causative factors. The causative factor of 2 patients is high myopia and of remainers is trauma. Of the 7 patients treated by removal of the posterior hyaloid membrane during total vitrectomy, 3 patients showed anatomical and functional success, 2 patients only the anatomical success, and 2 patients failure. The postoperative complications included phthisis bulbi, proliferative vitreoreinopathy, optic atrophy, and macular degeneration, and iatrogenic rhegmatogenous retinal detachment. Two patients of the 3 success cases complained of mild diplopia after operation.
Diplopia
;
Humans
;
Macular Degeneration
;
Membranes*
;
Myopia
;
Optic Atrophy
;
Postoperative Complications
;
Retinal Detachment
;
Retinal Perforations*
;
Vitrectomy*
9.Anthelmintic effects of single doses of fenbendazole and oxantel-pyrantel pamoate to the intestinal nematodes.
Han Jong RIM ; Joon Sang LEE ; Kyung Hwan JOO ; Yung Shik KIM
The Korean Journal of Parasitology 1981;19(2):95-100
The present study was undertaken to evaluate the anthelmintic effects of fenbendazole against intestinal nematode; Ascaris lumbricoides, hookworm and Trichuris trichiura, and to compare the efficacy in fenbendazole, oxantel-pyrantel pamoate and placebo by means of double blind method. Out of 114 subjects harbouring Ascaris lumbricoides, hookworm and Trichuris trichiura, 36 cases were treated with single dose of fenbendazole, 38 cases with oxantel-pyrantel pamoate, and the remaining 40 cases had received the placebo. The results were as follows: In the group treated with fenbendazole (30-50 mg/kg), the cure rates were 83.9 percent in 31 subjects with Ascaris lumbricoides and 83.3 percent in 18 subjects with hookworm, and only 28.6 percent in 28 subjects with T. trichiura respectively. In the group treated with a single dose of oxantel-pyrantel pamoate (10 mg/mg), the cure rates were 96.7 percent in 30 subjects with A. lumbricoides, 95.2 percent in 21 subjects with hookworm, and 54.6 percent in 33 subjects with T. trichiura. Egg reduction rate was 85.7 percent in T. trichiura cases. On the other hand, the egg negative conversion rates in placebo group were 9.7, 8.3 and 33.3 percent in Ascaris, Trichuris and hookworm infections respectively. The above results showed that fenbendazole was highly effective against Ascaris and hookworm. However, incomparisom with oxantel-pyrantel pamoate, fenbendazole was less effective in regards of A. lumbricoides, hookworm and T. trichiura infections.
parasitology-helminth-nematoda
;
chemotherapy
;
Ascaris lumbricoides
;
hookworm
;
Trichuris trichiura
;
fenbendazole
;
oxantel-pyrantel pamoate
10.Procedure-Related Complications of Transjugular Intrahepatic Portosystemic Shunt (TIPS) and Its Clinical Significance.
Yong Joo KIM ; Duk Sik KANG ; Hyun Han OH ; Kyung Hwan BYUN ; Tae Gwon KIM
Journal of the Korean Radiological Society 1995;33(1):67-72
PURPOSE: The purpose was to evaluate the procedure-related complications of the TIPS and its clinical significance. MATERIALS AND METHODS: The materials consisted of 52 patients who had 57 TIPS procedures for the management of variceal bleeding due to portal hypertension. To detect the occurrence of complications during transhepatic needle puncture(from hepatic vein to the portal vein), contrast material was injected with the withdrawl of the puncture needle. RESULTS: Procedure-related complications occurred in 28 patients (54%) among 52 patients. The corn lications were biliary tree puncture(15 cases), transperitoneal puncture(14 cases), stent malposition(3 cases) stent migration(1 case), hepatic arteries puncture(1 case), splenic vein perforation(1 case), and paroxysmal tricular tachycardia(1 case). Three patients had acute stent thrombosis with rebleeding immediately after procedure. The procedure was repeated in two patients. One patient was expired due to rebleeding. CONCLUSION: The procedure related complications were clinically insignificant in most instances, when stent thrombosis or proxysmal ventricular tachycardia was developed.
Biliary Tract
;
Esophageal and Gastric Varices
;
Hepatic Artery
;
Hepatic Veins
;
Humans
;
Hypertension, Portal
;
Needles
;
Portasystemic Shunt, Surgical*
;
Punctures
;
Splenic Vein
;
Stents
;
Tachycardia, Ventricular
;
Thrombosis
;
Zea mays