1.Histologic study of Coral Template Wrapped with Perichondrial Flap.
Ji Soo KIM ; Dae Gu SON ; Ki Hwan HAN ; Dong Won CHOI ; Kwan Kyu PARK
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1999;26(3):392-398
Autogenous costal cartilage graft has been commonly used for reconstruction of auricular deformity. However, the risk of complication and discomfort at the donor site, as well as distortion of the graft due to morphological change in the cartilage have been serious drawbacks to this procedure. Previous studies examining the chondrogenic potential of perichondrium have suggested that perichondrium may be used as graft for cartilage reconstruction. When a perichondrial flap or a free perichondrium was used as graft, new cartilage formed appositional to the grafted perichondrium. However, the neocartilage was often irregular in shape and varied considerably in quantity. In this study, the feasibility of controlling the shape and the mass of neocartilage was investigated using coral, a porous biomaterial, as a template. A coral a template was wrapped with perichondrial flap from the ears of New Zealand white rabbits and placed into a subcutaneous pocket in the rabbits and placed into a subcutaneous pocket in the rabbit's back by incision. A total of 12 animals were used. Formation of new cartilage was later evaluated by gross and histological examination of the perichondrial flap and the coral template. New cartilage was formed in 11 animals. Immature chondrocytes were visible by 3 weeks after the surgery, and by 8 weeks the immature chondrocytes had formed a cartilage. New cartilage was formed only on the surface of the coral template. These results indicated that the shape and the mass of new cartilage may be controlled by using coral template. Therefore, the desired shape of cartilage may be achieved using a coral template of corresponding shape, and this may help in correcting subtle auricular contour defect and in correcting other structural defects that also require new cartilage formation.
Animals
;
Anthozoa*
;
Cartilage
;
Chondrocytes
;
Congenital Abnormalities
;
Ear
;
Humans
;
Rabbits
;
Tissue Donors
;
Transplants
2.Two cases of Dyke-Davidoff-Masson syndrome.
Dong Gun PARK ; Ji Hee PARK ; Kee Hwan YOO ; Ji Tae CHOUNG ; Chang Sung SON ; Young Chang TOCKGO
Journal of the Korean Pediatric Society 1993;36(6):865-869
Dyke-Davidoff-Masson syndrome is a rare disorder which developed hemiatrophy of brain, enlargement of ventricles and prominent pneumatization of petrous pyramid of the temporal bone. It manifests hemiparesis, varying type seizure, and mental retardation. We experienced two cases of Dyke-avidoff-Masson Syndrome, in a 6/12 year-old boy and a 1, 10/12 year-old girl who were admitted to our department of pediatrics, because of convulsion and hemiparesis The brain CT scan showed marked dilatation of lateral ventricle, prominent sylvian fissure and cortical sulci. So we report two cases of Dyke-Davidoff-Masson syndrome with review of literature.
Brain
;
Dilatation
;
Female
;
Humans
;
Intellectual Disability
;
Lateral Ventricles
;
Male
;
Paresis
;
Pediatrics
;
Petrous Bone
;
Seizures
;
Temporal Bone
;
Tomography, X-Ray Computed
3.The Long-Term Clinical Outcomes of Primary PTCA with Heparin-Coated Stent in Acute Myocardial Infarction.
Woong Chol KANG ; Seung Hwan HAN ; Tae Hoon AHN ; Min Soo SON ; Ji Won SON ; Eak Kyun SHIN
Korean Circulation Journal 2004;34(6):540-547
BACKGROUND AND OBJECTIVES: Primary percutaneous coronary intervention (PCI) has been reported to be effective reperfusion therapy for acute myocardial infarction (AMI). In the very thrombotic environment of AMI, primary PCI, with heparin-coated stents, has been known to reduce the early reocclusion of the stented vessel by preventing thrombosis. However, little data exist regarding the long-term clinical outcomes. The aim of our study was to evaluate the safety, feasibility and long-term efficacy of heparin-coated stents in AMI. SUBJECTS AND METHODS: Between January 1998 and July 2002, primary PCI with heparin-coated stents was performed in 132 consecutive patients (98 males, with a mean age of 56.3+/-0.7 years) admitted with the diagnosis of AMI within 12 hours from the onset of the chest pain. Major adverse cardiac events (MACE), including death, MI, TLR (target lesion revascularization) and CABG, were recorded during hospitalization and the follow-up period. Angiograms were obtained at the baseline, after stent implantation and at 6 months following implantation. RESULTS: The angiographic and procedure success rate was 96.2%. During hospitalization, there was no evidence of reocclusion of stented vessel, but 1 patient underwent a repeat PCI due to dissection. There were no bleeding complications. A six-month angiographic follow-up was completed in 47.2% of eligible patients and binary restenosis was present in 20.1%. During the long-term clinical follow-up (mean follow-up period 37.2+/-7.2 months), there were 12 deaths, 1 myocardial infarction and 18 TLR. The MACE free survival rate was 76.5%. CONCLUSION: Primary PCI, with heparin-coated stents, shows favorable long-term clinical outcomes.
Chest Pain
;
Diagnosis
;
Follow-Up Studies
;
Hemorrhage
;
Hospitalization
;
Humans
;
Male
;
Myocardial Infarction*
;
Percutaneous Coronary Intervention
;
Reperfusion
;
Stents*
;
Survival Rate
;
Thrombosis
4.Risk of Gastrointestinal Bleeding Associated with Use of Low-dose Aspirin in Korean Children.
Sun Hwan BAE ; Dong Woo SON ; Kyung Hee PARK
Korean Journal of Pediatric Gastroenterology and Nutrition 2003;6(1):10-16
PURPOSE: To evaluate the risk of gastrointestinal bleeding associated with use of low-dose aspirin in children. METHODS: Among about 250 children who received low-dose aspirin (5 mg/kg/day) under the diagnosis of Kawasaki disease, from March 1995 to May 2001, at Eul-Ji general hospital, 100 children were enrolled in this study. We reviewed the medical records and interviewed the children's parents over the phone to confirm the existence of gross gastrointestinal bleeding. RESULTS: The age of the children at the beginning of medication ranged 4~118 months. About 75% of them was younger than 3 years old. The duration of medication ranged 0.5~17 months. About 70% of the children took the medicine for 2~3 months. Only 1 child (1%) had hematochezia during medication without any accompanying gastrointestinal symptom, and cimetidine for 1 week had cleared up the bleeding. The total duration of medication of 100 children was 341.5 months, and only 1 child had gastrointestinal bleeding. This translates into a rate of clinically significant gastrointestinal bleeding of 3.5 episodes/100 children/year. CONCLUSION: The long-term use of low-dose aspirin is safe, but, is associated with the risk of gastrointestinal bleeding in children. Careful follow-up and efforts to reduce the risk of gastrointestinal bleeding are necessary during long-term low-dose aspirin therapy in children.
Aspirin*
;
Child*
;
Child, Preschool
;
Cimetidine
;
Diagnosis
;
Follow-Up Studies
;
Gastrointestinal Hemorrhage
;
Hemorrhage*
;
Hospitals, General
;
Humans
;
Medical Records
;
Mucocutaneous Lymph Node Syndrome
;
Parents
5.Calcification on the Surface of Silicone Nasal Implants: Regional Properties of Calcification Deposits.
Min Jae LEE ; Hyun Ji KIM ; Ki Hwan HAN ; Jun Hyung KIM ; Dae Gu SON
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2006;33(3):324-329
The silicone rubber implants are widely used in plastic surgery because of various advantages; however, calcification in surface of implant(as a chemical resistance) may transform or destroy the high molecular biomaterial when it stays too long within the human body. The purpose of this study is to determine the relationship between calcification and the histological disparities of the tissues surrounding the area adjoining the silicone nasal implant by examining the regional characteristics of calcium deposits in the silicone nasal implant via elemental analyses using EDX(energy-dispersive X-ray analysis) and ultrastructural analyses using SEM(scanning electron microscopy). The subjects of the study were 19 silicone nasal implants removed by revision rhinoplasty, all displaying calcification. According to the tissue characters, the implant surface was divided into 4 zones with the rhinion as the basis. For each zone, elemental and ultrastructural analyses were performed. Elemental analysis revealed that the calcium deposits consisted of Ca and P only. There were no statistically significant disparities among the ratios between Ca and P according to the zones. Ultrastructural analysis showed acellular mineral-like deposits coalesced to create amorphous deposits in all zones; however, in zones 1 and 3(more pressurized zones by periosteum or nasal bone), additional flaky cylinder-shaped calcium deposits were detected. Thus, it seems that the histological disparities in the surrounding tissues do not affect the components and their proportions in the calcification process. However, it can be inferred that the physical environment due to the histological disparities in the surrounding tissues affects the ultrastructures of calcium deposits.
Calcium
;
Human Body
;
Periosteum
;
Rhinoplasty
;
Silicone Elastomers
;
Surgery, Plastic
6.Outcome of pelvic arterial embolization for postpartum hemorrhage: A retrospective review of 117 cases.
Ji Yoon CHEONG ; Tae Wook KONG ; Joo Hyuk SON ; Je Hwan WON ; Jeong In YANG ; Haeng Soo KIM
Obstetrics & Gynecology Science 2014;57(1):17-27
OBJECTIVE: The aim of this study was to evaluate indications, efficacy, and complications associated with pelvic arterial embolization (PAE) for postpartum hemorrhage (PPH). METHODS: We retrospectively reviewed the medical records of 117 consecutive patients who underwent PAE for PPH between January 2006 and June 2013. RESULTS: In our single-center study, 117 women underwent PAE to control PPH refractory to conservative management including uterine massage, use of uterotonic agents, surgical repair of genital tract lacerations, and removal of retained placental tissues. Among 117 patients, 69 had a vaginal delivery and 48 had a Cesarean section. The major indication for embolization was uterine atony (54.7%). Other causes were low genital tract lacerations (21.4%) and abnormal placentation (14.5%). The procedure showed a clinical success rate of 88.0% with 14 cases of PAE failure; there were 4 hemostatic hysterectomies and 10 re-embolizations. On univariate analysis, PAE failure was associated with overt disseminated intravascular coagulation (P=0.009), transfusion of more than 10 red blood cell units (RBCUs, P=0.002) and embolization of both uterine and ovarian arteries (P=0.003). Multivariate analysis showed that PAE failure was only associated with transfusions of more than 10 RBCUs (odds ratio, 8.011; 95% confidence interval, 1.531-41.912; P=0.014) and embolization of both uterine and ovarian arteries (odds ratio, 20.472; 95% confidence interval, 2.715-154.365; P=0.003), which were not predictive factors, but rather, were the results of longer time for PAE. Three patients showed uterine necrosis and underwent hysterectomy. CONCLUSION: PAE showed high success rates, mostly without procedure-related complications. Thus, it is a safe and effective adjunct or alternative to hemostatic hysterectomy, when primary management fails to control PPH.
Arteries
;
Cesarean Section
;
Disseminated Intravascular Coagulation
;
Erythrocytes
;
Female
;
Humans
;
Hysterectomy
;
Lacerations
;
Massage
;
Medical Records
;
Multivariate Analysis
;
Necrosis
;
Placentation
;
Postpartum Hemorrhage*
;
Postpartum Period*
;
Pregnancy
;
Retrospective Studies*
;
Uterine Inertia
7.Porphyria cutanea tarda precipitated by alcohol abuse.
Hee Yeon KIM ; Ji Hyun KIM ; Seung Hwan LEE ; Ho Young SON
Korean Journal of Medicine 2007;73(6):670-671
No abstract available.
Alcoholism*
;
Porphyria Cutanea Tarda*
;
Porphyrias*
8.Forehead Lift using Non-endoscopic Myotomy.
Ki Hwan HAN ; Young Jin JUNG ; Hyun Ji KIM ; Jun Hyung KIM ; Dae Gu SON
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2006;33(1):80-86
The challenge of accurately predicting eyelid height after blepharoptosis surgery is well-known problem even in complete hands. From May 1988 to December 2004, authors reviewed 182 cases(240 eyes) of blepharoptosis corrected by frontalis muscle transfer or levator resection and had experienced 10 cases(15 eyelids) of early reoperation around the first week. The period from initial operation to reoperation are between six to eight days and mean period is seven days. Initial operative procedures were frontalis muscle transfer in 3 cases(4 eyelids) and levator resection in 7 cases(11 eyelids). Follow up period ranged from 6 months to 16 years. Early adjusting surgery was performed in accordance with the preoperative and postoperative degree of ptosis of patient and by previous operative technique. The results are evaluated according to the criteria of an ideal correction by Souther and Jordan. Seven patients have good or satisfactory results(less than 1 mm asymmetry, good in 5 cases and satisfactory in 2 cases). Three patients(5 eyelids) recorded as poor results(more than 2 mm asymmetry). Even if early or late reoperation can be effective in correcting unsatisfactory results after correction of blepharoptosis, early reoperation may lead to better results than late reoperation because early reoperation can offer a reduction in time to final result, the ease with which it is performed and potential cost savings. The experience of surgeon is also important factor for the treat ment of recurred blepharoptosis.
Blepharoptosis
;
Cost Savings
;
Eyebrows
;
Eyelids
;
Follow-Up Studies
;
Forehead*
;
Hand
;
Humans
;
Jordan
;
Reoperation
;
Rhytidoplasty
;
Surgical Procedures, Operative
9.Acoustic Rhinometric Comparison of Cleft Side with Non-cleft Side after Repair of Unilateral Cleft Lip Nose Deformity.
Ki Hwan HAN ; Hyuk Joon KWON ; Hyun Ji KIM ; Jun Hyung KIM ; Dae Gu SON
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2006;33(1):75-79
The upper and lower lateral cartilages provide the key to the lower cartilaginous portion of the nose. Lifting the cartilages is essential procedure for correction of unilateral cleft lip nose deformity. After correction of cleft lip nose deformity, authors used acoustic rhinometry (AR) to compare the lower nasal cavity of cleft side with non-cleft side. AR is a well known new, non-invasive diagnostic technique in which nasal geometry is assessed by means of acoustic reflection. From June 1996 to January 2004, we performed acoustic rhinometric analysis after correction of unilateral cleft lip nose deformity. This study involved 40 children of age ranged from 3 months to 8 years. Subjects were divided into the group of incomplete unilateral cleft lip nose deformity(20 subjects), and the group of complete unilateral cleft lip nose deformity(20 subjects). Results show that lower nasal cavity volume between non-cleft side and cleft side has no difference, and better results were obtained when nasal molding prong was applied at cleft side nostril. The results between incomplete type and complete type have no significant difference. In conclusion, AR is an effective method to calibrate cross sectional area and nasal cavity volume of unilateral cleft lip nose deformity, and furthermore effective in comparing the volume of cleft side with non-cleft side after unilateral cleft lip nose deformity correction with lifting the lower lateral cartilages to the upper lateral cartilages.
Acoustics*
;
Cartilage
;
Child
;
Cleft Lip*
;
Congenital Abnormalities*
;
Fungi
;
Humans
;
Lifting
;
Nasal Cavity
;
Nose*
;
Rhinometry, Acoustic
10.Polyurethane Semi-occlusive Dressing for Full Thickness Skin Graft Application.
Hyuk Gu LEE ; Dae Gu SON ; Hyun Ji KIM ; Jun Hyung KIM ; Ki Hwan HAN
Journal of the Korean Society of Plastic and Reconstructive Surgeons 2005;32(5):607-612
A traditional tie-over dressing may be applied to support the take of a skin graft. Although there are many advantage of this method, it has significant disadvantages, including time-consuming application. Furthermore, when the dressing is changed, the gauze becomes hard and can be stuck to the graft, causing damage and pain upon removal. The purpose of our study is to evaluate the effect of semi-occlusive dressing using polyurethane foam and film dressing(Allevyn(R), Opsite(R)) after full thickness skin graft. The authors treated 45 cases including burn scar contracture(n=38), syndactyly (n=1), absence of nipple-areolar complex(n=4), traumatic skin defect(n=1) and contact burn(n=1) with authors' method and 39 patients including burn scar contracture (n=39) with the tie-over dressing between 2000 and 2004. The patients in polyurethane foam and film dressing group ranged from 1 to 62 years of age (mean age, 15.1 years) and the patients in tie-over dressing group ranged from 2 to 60 years of age(mean age, 21.3 years). The postoperative results were analyzed according to the following measures: (1) the duration of graft-taking, (2) the admission period, (3) complications. Compared with the traditional tie-over dressing, polyurethane foam and film dressing was shown to be more successful in a reduced duration of graft-taking, in which was similar to the former in the rate of graft-taking, a reduced admission period and patient's discomfort. We concluded that semi-occlusive dressing using Allevyn(R) and Opsite(R) was an effective method after full thickness skin graft, which was easy to shape to difficult body locations, such as web spaces, fingers and maintains a moist environment for wound healing and does not stick to the wound.
Bandages*
;
Burns
;
Cicatrix
;
Contracture
;
Fingers
;
Humans
;
Occlusive Dressings
;
Polyurethanes*
;
Skin Transplantation
;
Skin*
;
Syndactyly
;
Transplants*
;
Wound Healing
;
Wounds and Injuries