1.Treatment of cystic lymphangioma with topical use of bleomycin in childhood.
Han Cheol CHOI ; Young Wook KIM ; Soo Il CHANG
Journal of the Korean Surgical Society 1993;44(4):598-604
No abstract available.
Bleomycin*
;
Lymphangioma, Cystic*
2.Rationale for the Combined Front and Back Surgery in the Treatment of Cervical Spondylotic Myeloradiculopathy
Han CHANG ; Won Jong BAHK ; Jong Wook SIN ; Hyun BOK
The Journal of the Korean Orthopaedic Association 1996;31(1):33-41
We have retrospectively analyzed the clinical and radiological outcome in 22 cervical spondylotic myeloradiculopathy patients who underwent combined front anterior decompression and fusion) and back (open door laminoplasty) surgery between Mar. 1991 and Jan. 1995. Clinical symptoms were evaluated by Japanese Orthopaedic Association(JOA) score and the recovery rate. Plain radiogram and MIR were taken before and after surgery, and then the cervical curvature, change of body to canal ratio and the A-P compression ratio of the cord were measured and compared to the clinical symptoms. Results : The mean JOA score increased from 10.1±3.3 preoperatively to 14.7±1.4 at the final follow-up with a mean recovery rate of 64.4%. No patients deteriorated as a result of the combined procedure. Post-op. radiograms showed an increasement of body to ratios (average 0.69±0.09 pre-op. to 1.0±0.13 post-op.) and maintenance or recovery of cervical Lordosis. On MRI, the A-P compression ratios of the cord were increased with recovery of subarachnoid space after the operation in most cases (average 38.4±7.6 pre-op. to 55.7±7.2 post-op.). Conclusion : This combined procedure safely and effectively resulted in decompression of the spinal cord and good functional recovery in patients with 1) anterior and posterior pathology, 2) narrow spinal canal and large spondylotic bar or herniated disc encroaching the spinal canal more than 5mm, 3) narrow spinal canal and kyphotic deformity, 4) narrow spinal canal and segmental instability, 5) multisegmental cord compression and severe radiculopathy.
Animals
;
Asian Continental Ancestry Group
;
Congenital Abnormalities
;
Decompression
;
Follow-Up Studies
;
Humans
;
Intervertebral Disc Displacement
;
Lordosis
;
Magnetic Resonance Imaging
;
Pathology
;
Radiculopathy
;
Retrospective Studies
;
Spinal Canal
;
Spinal Cord
;
Subarachnoid Space
3.Extracorporeal Membrane Oxygenation for the Support of a Potential Organ Donor with a Fatal Brain Injury before Brain Death Determination.
Sung Wook CHANG ; Sun HAN ; Jung Ho KO ; Jae Wook RYU
Korean Journal of Critical Care Medicine 2016;31(2):169-172
The shortage of available organ donors is a significant problem and various efforts have been made to avoid the loss of organ donors. Among these, extracorporeal membrane oxygenation (ECMO) has been introduced to help support and manage potential donors. Many traumatic brain injury patients have healthy organs that might be eligible for donation for transplantation. However, the condition of a donor with a fatal brain injury may rapidly deteriorate prior to brain death determination; this frequently results in the loss of eligible donors. Here, we report the use of venoarterial ECMO to support a potential donor with a fatal brain injury before brain death determination, and thereby preserve donor organs. The patient successfully donated his liver and kidneys after brain death determination.
Brain Death*
;
Brain Injuries*
;
Brain*
;
Extracorporeal Membrane Oxygenation*
;
Humans
;
Kidney
;
Liver
;
Tissue and Organ Procurement
;
Tissue Donors*
4.A Case of Systemic Lupus Erythematosus Presented with Clinical Feature Resembling Multiple Sclerosis.
Chang Wan HAN ; Hoon Suk CHA ; Seong Wook KANG ; Yoon Jong LEE ; Yeong Wook SONG
The Journal of the Korean Rheumatism Association 1997;4(2):180-184
Systemic lupus erythematosus is a connective tissue disease which can affect every organ system. Neurologic abnormalities are common, occuring in approximately half of all patients at some time during the course of their illness. But symptoms of nervous system as the sole presenting symptoms occur in less than 1% of lupus patients. In patients initially presenting with neurologic symptoms and signs, differential diagnosis is difficult and sometimes it may be misdiagnosed. Therefore extensive laboratory investigations should be carried out in all patients with unusual neurological symptoms, since early diagnosis of lupus can help in providing effective treatment. We report a patient with systemic lupus erythematosus who presented with dysarthria and dysphagia resembling multiple sclerosis.
Connective Tissue Diseases
;
Deglutition Disorders
;
Diagnosis, Differential
;
Dysarthria
;
Early Diagnosis
;
Humans
;
Lupus Erythematosus, Systemic*
;
Multiple Sclerosis*
;
Nervous System
;
Neurologic Manifestations
5.The Role of Matrix Metalloproteinases in Aseptic Loosening of Total Hip Prostheses.
Chang Dong HAN ; Jin Woo LEE ; Dae Yong HAN ; Sahng Wook PARK
The Journal of the Korean Orthopaedic Association 1998;33(2):232-239
Incidence of aseptic loosening of hip prostheses is increasing in recent years. Previous studies suggested the involvement of proteinases and cytokines in the accelerated bone lysis associated with loosening. To investigate the role of matrix metalloproteinases (MMPs) in the loosening, Gelatin/Type IV collagenases, namely, 72 KDa matrix metalloproteinase (MMP)-2 type and 92 KDa MMP-9 type were analyzed in 14 cases of the loosened endoprostheses of the hip. Zymographic and densitometric analyses revealed production of MMP-2 ancl elevated induction of MMP-9 in tissue extracts from both the interface hetween hone and implants and the capsular tissues when compared with those in synovium obtained from a patient with a t'ractured femoral neck. MMP-9 showed stronger activity than MMP-2. In the sample of a fractured femoral neck, MMP-2 was detected, but MMP-9 was not detected. In matched samples, the activity of MMP-2 and MMP-9 in the interface tissues showed stronger activity than those in the capsular tissues. There was no difference between cemented and uncemented femoral prostheses. The state of prostheses(loosening, osteolysis, and cup wear) did not influence on the activity of MMP-2 and MMP-9. Theses findings suggest a role for MMP-2 and MMP-9 type gelatinase/Type IV collagenases in the degradation of extracellular matrix of periprosthetic tissues, where they may cause weakening of the connective tissue hed and the loosening of total hip replacement endoprostheses. Consequently. we could confirm the role of MMP cascade in aseptic loosening of total hip prostheses. The further study ahout other types of MMP and the inhihitor of MMP will be needed.
Arthroplasty, Replacement, Hip
;
Collagenases
;
Connective Tissue
;
Cytokines
;
Extracellular Matrix
;
Femur Neck
;
Hip Prosthesis*
;
Hip*
;
Humans
;
Incidence
;
Matrix Metalloproteinases*
;
Osteolysis
;
Peptide Hydrolases
;
Prostheses and Implants
;
Synovial Membrane
;
Tissue Extracts
6.The Influence of Obesity on Clinical Outcomes after Total Knee Arthroplasty: A Five-year Minimum Follow-up.
Chang Dong HAN ; Chang Wook HAN ; Ick Hwan YANG
Journal of the Korean Knee Society 2008;20(1):16-21
PURPOSE: To evaluate the effects of obesity on clinical outcomes following total knee arthroplasty in osteoarthritis patients. MATERIALS AND METHODS: Between June 1999 and February 2002, 239 osteoarthritis patients underwent total knee arthroplasty, and 118 knees of 94 patients treated during this period were followed for a minimum of 5 years. Seventy knees belonged to 56 obese patients (body mass index, BMI>25 kg/m2), while 48 knees belonged to 38 non-obese patients (BMI<25 kg/m2). All patients were fitted with the same type of prosthesis by the same surgeon. The Knee Society objective and functional scores, range of motion, patellofemoral symptoms, complication rate, and revision rate were analyzed and compared between the two groups. RESULTS: Analysis showed that the obese and non-obese groups were similar in terms of Knee Society scores, range of motion, patellofemoral symptoms, complication rate, and infection rate. Ninety percent of knees in the obese group and 92% of knees in the non-obese group had a successful outcome (i.e., Knee Society score >80 points at final follow-up) (p>0.05). With regard to revision, 4 liner exchanges took place in the obese group due to liner dislodgement, and no liner exchanges took place in the non-obese group. However, there was no significant difference in the incidence of liner exchange between the two groups (p>0.05). CONCLUSION: Obesity (BMI>25 kg/m2) has no effect on total knee arthroplasty outcomes in osteoarthritis patients at 5 years follow-up.
Arthroplasty
;
Body Mass Index
;
Follow-Up Studies
;
Humans
;
Hypogonadism
;
Incidence
;
Knee
;
Knee Joint
;
Mitochondrial Diseases
;
Obesity
;
Ophthalmoplegia
;
Osteoarthritis
;
Prostheses and Implants
;
Range of Motion, Articular
7.Obesity and Perioperative Morbidity after Total Hip Arthroplasty in Osteoarthritis Patients.
Chang Dong HAN ; Chang Wook HAN ; Ik Hwan YANG
Journal of the Korean Hip Society 2008;20(1):42-46
PURPOSE: To evaluate the effect of obesity on perioperative morbidity following total hip arthroplasty in patients with severe osteoarthritis. MATERIALS AND METHODS: Between April 1987 and April 2007, 272 patients with severe osteoarthritis underwent total hip arthroplasty. One hundred seventeen patients were obese (body mass index, BMI> or =25 kg/m2), and 155 were not obese (BMI<25 kg/m2). Through retrospective medical record research we were able to determine length of hospital stay, operation time, total blood loss and replacement, and surgical and medical complication rates for the two groups. RESULTS: The obese and non-obese groups were similar in terms of length of hospital stay, operation time, total blood loss and replacement, and surgical complication rate (p>0.05). However, the medical complication rate was significantly higher in the obese group compared to the non-obese group (4.3% vs. 0.6%, p<0.005). CONCLUSION: In severe osteoarthritis patients undergoing total hip arthroplasty, obesity (BMI> or =25 kg/m2) has no observable effect on perioperative morbidity in terms of length of hospital stay, operation time, total blood loss and replacement, or surgical complication rate, but is associated with a higher medical complication rate.
Arthroplasty
;
Body Mass Index
;
Hip
;
Hip Joint
;
Humans
;
Length of Stay
;
Medical Records
;
Obesity
;
Osteoarthritis
;
Retrospective Studies
8.The Changes of Ventricular Activation Time According to Acute Myocardial Ischemia.
Seong Wook HAN ; Yoon Nyun KIM ; Ki Young KIM ; Chang Wook NAM ; Kee Sik KIM ; Kwon Bae KIM
Korean Circulation Journal 2001;31(3):317-326
BACKGROUND AND OBJECTIVES: In acute myocardial ischemia, the conduction velocity of action potential is decreased by several electrophysiological and physical factors. The ventricular activation time(VAT) is a time duration of electrical impulse propagating from endocardium to epicardium. The goal of this study is to determine whether the reduction in conduction velocity in acute myocardial ischemia can lead a change in VAT. MATERIALS AND METHOD: Thirty patient, 18 males and 12 females, who had received percutaneous balloon coronary angioplasty(PTCA) were enrolled. The mean age was 59 years old. A twelve lead surface electrocardiogram(ECG) were obtained before, during, 1 minute, 5 minutes, and 10 minutes after the PTCA as digitized data by using Cardiolab EP 4.1 program. The magnitude of the QRS wave was amplified 3 to 4 folds and the speed was increased to 200mm/sec in order to get the VAT easily and accurately. The data was the mean of three consecutive VATs. The number of vessel treated with PTCA included left anterior descending artery(12), left circumflex artery(9), and right coronary artery(9). Among twelve chronic stable angina, sixteen unstable angina, and two acute myocardial infarction patients, twenty six had single and four had two vessel diseases. RESULTS: The significant increase in VAT during PTCA compared to that before PTCA was observed in eight of 12 leads. In addition, the significant decrease in VAT of 1, 5, and 10 minutes after PTCA compared to that during PTCA were noted. Furthermore, 10 minutes after PTCA, VAT decreased significantly compared to that before PTCA. The leads did not show a significant change of VAT depending on target vessels. The ECG of 16 patients showed changes of the ST segment during PTCA. The changes of VAT were not related to the ST segment change. CONCLUSION: The conduction delay from endocardium to epicardium in acute myocardial ischemia was presented as a prolongation of VAT in surface ECG. In addition, the conduction delay was recovered within 5 minutes after relief of ischemia. Therefore, the changes of VAT can possibly be used as one of the noninvasive parameters of myocardial ischemia.
Action Potentials
;
Angina, Stable
;
Angina, Unstable
;
Electrocardiography
;
Endocardium
;
Female
;
Humans
;
Ischemia
;
Male
;
Middle Aged
;
Myocardial Infarction
;
Myocardial Ischemia*
;
Pericardium
;
Thoracic Surgery, Video-Assisted
9.Extracorporeal Membrane Oxygenation for the Support of a Potential Organ Donor with a Fatal Brain Injury before Brain Death Determination
Sung Wook CHANG ; Sun HAN ; Jung Ho KO ; Jae Wook RYU
The Korean Journal of Critical Care Medicine 2016;31(2):169-172
The shortage of available organ donors is a significant problem and various efforts have been made to avoid the loss of organ donors. Among these, extracorporeal membrane oxygenation (ECMO) has been introduced to help support and manage potential donors. Many traumatic brain injury patients have healthy organs that might be eligible for donation for transplantation. However, the condition of a donor with a fatal brain injury may rapidly deteriorate prior to brain death determination; this frequently results in the loss of eligible donors. Here, we report the use of venoarterial ECMO to support a potential donor with a fatal brain injury before brain death determination, and thereby preserve donor organs. The patient successfully donated his liver and kidneys after brain death determination.
Brain Death
;
Brain Injuries
;
Brain
;
Extracorporeal Membrane Oxygenation
;
Humans
;
Kidney
;
Liver
;
Tissue and Organ Procurement
;
Tissue Donors
10.Effect of YAG Laser Iridotomy on IOP in Chronic Angle-closure Glaucoma.
Journal of the Korean Ophthalmological Society 1995;36(10):1730-1736
The effect of YAG laser iridotomy on intraocular pressure was investigated in 24 eyes of 19 patients with chronic angle-closure glaucoma prospectively for 3 months. In most cases(75%) the intraocular presure was reduced and the mean amount of reduction was 4.33mmHg. The amount of pressure reduction has no significant correlation with the extent of peripheral anterior synechiae and visual field loss. This result shows that laser iridotomy should be considered in the management of chronic angle-closure glaucoma irrespective of the extent of peripheral anterior synechiae and visual field loss and some amount of intraocular pressure reduction may be expected after laser iridotomy.
Glaucoma, Angle-Closure*
;
Humans
;
Intraocular Pressure
;
Lasers, Solid-State*
;
Prospective Studies
;
Visual Fields