1.The effect of intravenous ritodrine hydrochloride on premature labor.
Jae Min LEE ; Yong Ho MOON ; Sun Jae HWANG ; Kyoung Hoon LEE ; Tae Ro KWAK
Korean Journal of Obstetrics and Gynecology 1993;36(7):3010-3016
No abstract available.
Female
;
Obstetric Labor, Premature*
;
Pregnancy
;
Ritodrine*
2.Total Elbow Arthroplasty: Clinical Outcomes, Complications, and Revision Surgery
Jae Man KWAK ; Kyoung Hwan KOH ; In Ho JEON
Clinics in Orthopedic Surgery 2019;11(4):369-379
Total elbow arthroplasty is a common surgical procedure used in the management of advanced rheumatoid arthritis, posttraumatic arthritis, osteoarthritis, and unfixable fracture in elderly patients. Total elbow prostheses have evolved over the years and now include the linked, unlinked, and convertible types. However, long-term complications, including infection, aseptic loosening, instability, and periprosthetic fracture, remain a challenge. Here, we introduce each type of implant and evaluate clinical outcomes and complications by reviewing the previous literature.
Aged
;
Arthritis
;
Arthritis, Rheumatoid
;
Arthroplasty
;
Elbow Prosthesis
;
Elbow
;
Humans
;
Osteoarthritis
;
Periprosthetic Fractures
;
Reoperation
;
Treatment Outcome
3.Glomangiomyoma of the Trachea.
Sam Hyun BAEK ; Dong Myung HUH ; Jun Ho PARK ; Eun Kyoung KWAK ; Byung Ho KIM ; Won Kyung HAN
The Korean Journal of Thoracic and Cardiovascular Surgery 2011;44(6):440-443
A glomus tumor is an uncommon soft tissue tumor that is most commonly found in the subungual area and a glomus originating in the trachea is extremely rare. Histologically and ultrastructurally, these tumors have been divided into three subtypes: classic glomus tumors, glomangiomas, and glomangiomyomas. Glomangiomyomas account for less than 10% of all glomus tumors and are the least common type. We report a case of a 54-year-old man with glomangiomyoma of the trachea who presented with stridor. We treated the tumor by segmental resection and primary repair via a transcervical approach.
Glomus Tumor
;
Humans
;
Middle Aged
;
Respiratory Sounds
;
Trachea
;
Tracheal Neoplasms
4.Topographic Anatomy of the Discomalleolar and Anterior Malleolar Ligaments in Human Adults and Fetuses.
Hee Jin KIM ; Kyoung Sub SHIM ; Hyun Ho KWAK ; Hyun Do PARK ; Min Kyu KANG ; In Hyuk CHUNG
Korean Journal of Physical Anthropology 2001;14(4):317-331
During temporomandibular joint (TMJ) formation, discomalleolar ligament (DML) and anterior malleolar ligament (AML) are formed within the dorsal end of the 1st branchial arch. But, DML is known as a remnant or the degenerated tissue through the TMJ development. There is few reports said that damage of AML and DML cause the damage of middle ear during surgical procedures. Especially, in case of anterior disk displacement of TMJ, aural symptom can be made via DML due to hyperextension anteriorly. A few studies have been reported about DML and AML in embryological and histological points of view, morphology and clinical aspects of DML and AML are still unclear. Four fetuses and sixteen adult hemi -sectioned heads were dissected to clarify the topographical relationship of AML and DML and to find out the anatomico -clinical relevance related with temporomandibular disorder. In fetal specimens, DML was firmly attached from the disk of the TMJ to the malleus. Also, AML in which distinguished into the superior and inferior lamellae was running anteriorly and continuous with the sphenomandibular ligament (SML) through the future petrotympanic fissure (PTF). DML attached to the malleus was observed in all adult specimens and was expanded broadly to the disk and capsule of the TMJ as shown the V -shaped ligament structures. The average distance between the anterior aspects of the malleolar head to the anterior wall of the tympanic cavity was 1.13 mm(0.75 ~1.59), and the length of the DML from the anterior aspect of the malleolar head to the attached site to the TMJ capsule at the PTF was 5.37 mm (4.53 ~6.07). The average width of the DML at the PTF was 6.06 mm (4.72 ~7.46). Most of the posterior attachments of the DML were the cases in which DML was directly attached to the malleus (68.7%). In all specimens, DML was attached to the disk and capsule of TMJ and attached to the anteromedial border of the PTF concurrently. In this study, two morphological patterns of AML were observed according to the presence of the bony ridge on the Huguiers canal in the PTF. The bony ridge of the Huguiers canal showed DML and AML separately in 56.3%, and the fused pattern of DML and AML was observed in 43.7%. AML was not distinguished with two lamellae in most specimens, superior ligament fibers were attached to the anteromedial border of the PTF and most of the inferior lamella was entering the gap in PTF and continuous with the SML. Average length from the anterior aspect of the malleolar head to the exit point of the AML on the PTF was 8.40 mm(6.62 ~11.42), and the shortest distance between the AML and chorda tympani was 2.01 mm(1.25 ~3.02). Taken all together, DML and AML were not the rudimentary, but the distinguishable structures in adults. Through the various morphological findings, DML and AML were separated ligamentous structures in which might be given rise from the divergent origin. And the anterior hyperextension of the disk of TMJ did not lead the movement of the malleus in the tympanic cavity, whereas, the movement of the malleus followed by the traction of the AML and SML was observed in a few cases. So, this results can be explained the possibility of the clinical symptom on the middle ear in case of the over -traction of the AML and SML.
Adult*
;
Branchial Region
;
Chorda Tympani Nerve
;
Ear, Middle
;
Fetus*
;
Head
;
Humans*
;
Ligaments*
;
Malleus
;
Running
;
Temporomandibular Joint
;
Temporomandibular Joint Disorders
;
Traction
5.Quantitative evaluation of midpalatal suture maturation via fractal analysis.
Kyoung Ho KWAK ; Seong Sik KIM ; Yong Il KIM ; Yong Deok KIM
The Korean Journal of Orthodontics 2016;46(5):323-330
OBJECTIVE: The purpose of this study was to determine whether the results of fractal analysis can be used as criteria for midpalatal suture maturation evaluation. METHODS: The study included 131 subjects aged over 18 years of age (range 18.1–53.4 years) who underwent cone-beam computed tomography. Skeletonized images of the midpalatal suture were obtained via image processing software and used to calculate fractal dimensions. Correlations between maturation stage and fractal dimensions were calculated using Spearman's correlation coefficient. Optimal fractal dimension cut-off values were determined using a receiver operating characteristic curve. RESULTS: The distribution of maturation stages of the midpalatal suture according to the cervical vertebrae maturation index was highly variable, and there was a strong negative correlation between maturation stage and fractal dimension (−0.623, p < 0.001). Fractal dimension was a statistically significant indicator of dichotomous results with regard to maturation stage (area under curve = 0.794, p < 0.001). A test in which fractal dimension was used to predict the resulting variable that splits maturation stages into ABC and D or E yielded an optimal fractal dimension cut-off value of 1.0235. CONCLUSIONS: There was a strong negative correlation between fractal dimension and midpalatal suture maturation. Fractal analysis is an objective quantitative method, and therefore we suggest that it may be useful for the evaluation of midpalatal suture maturation.
Cervical Vertebrae
;
Cone-Beam Computed Tomography
;
Evaluation Studies as Topic*
;
Female
;
Fractals*
;
Methods
;
ROC Curve
;
Skeleton
;
Sutures*
6.Definitive concurrent chemoradiotherapy in locally advanced pancreatic cancer.
Yoo Kang KWAK ; Jong Hoon LEE ; Myung Ah LEE ; Hoo Geun CHUN ; Dong Goo KIM ; Young Kyoung YOU ; Tae Ho HONG ; Hong Seok JANG
Radiation Oncology Journal 2014;32(2):49-56
PURPOSE: Survival outcome of locally advanced pancreatic cancer has been poor and little is known about prognostic factors of the disease, especially in locally advanced cases treated with concurrent chemoradiation. This study was to analyze overall survival and prognostic factors of patients treated with concurrent chemoradiotherapy (CCRT) in locally advanced pancreatic cancer. MATERIALS AND METHODS: Medical records of 34 patients diagnosed with unresectable pancreatic cancer and treated with definitive CCRT, from December 2003 to December 2012, were reviewed. Median prescribed radiation dose was 50.4 Gy (range, 41.4 to 55.8 Gy), once daily, five times per week, 1.8 to 3 Gy per fraction. RESULTS: With a mean follow-up of 10 months (range, 0 to 49 months), median overall survival was 9 months. The 1- and 2-year survival rates were 40% and 10%, respectively. Median and mean time to progression were 5 and 7 months, respectively. Prognostic parameters related to overall survival were post-CCRT CA19-9 (p = 0.02), the Eastern Cooperative Oncology Group (ECOG) status (p < 0.01), and radiation dose (p = 0.04) according to univariate analysis. In multivariate analysis, post-CCRT CA19-9 value below 180 U/mL and ECOG status 0 or 1 were statistically significant independent prognostic factors associated with improved overall survival (p < 0.01 and p = 0.02, respectively). CONCLUSION: Overall treatment results in locally advanced pancreatic cancer are relatively poor and few improvements have been accomplished in the past decades. Post-treatment CA19-9 below 180 U/mL and ECOG performance status 0 and 1 were significantly associated with an improved overall survival.
Chemoradiotherapy*
;
Follow-Up Studies
;
Humans
;
Medical Records
;
Multivariate Analysis
;
Pancreatic Neoplasms*
;
Survival Rate
7.The Effect of Simultaneous and Alternative Cardioplegia Delivery on Right Ventricular Preservation in Patients Undergoing Right Coronary Artery Bypass Graft Surgery.
Young Jun OH ; Young KWAK ; Yon Hee SHIM ; Jae Ho LEE ; Choon Soo LEE ; Hyun Kyoung LIM ; Sou Ouk BANG
Korean Journal of Anesthesiology 2001;40(2):175-181
BACKGROUND: Most surgeons prefer delivering cardioplegia alternatively via the aortic root and coronary sinus in patients undergoing coronary artery bypass graft surgery (CABG). Recently, some surgeons have delivered cardioplegia via the grafted vessel to the obstructed right coronary artery in order to preserve right ventricular function whenever retrograde cardioplegia is delivered. Thus, we have compared the effect on right ventricular preservation between the aforementioned two methods after cardiopulmonary bypass in patients undergoing a right CABG. METHODS: Twenty-eight patients undergoing an elective CABG with significant right coronary artery obstructive disease were allocated into 2 groups. In the alternative cardioplegia delivery group (A-group), cold blood cardioplegia was delivered via the aortic root and coronary sinus alternatively. In the simultaneous cardioplegia delivery group (S-group), cold blood cardioplegia was delivered via the coronary sinus and grafted vessel to the obstructed right coronary artery simultaneously. Hemodynamic measurements were obtained pre-bypass, at pericardial closure and at sternal closure. Data recorded included right ventricular ejection fraction, right ventricular volume index and right and left ventricular hemodynamics. RESULTS: There was no significant difference in the right ventricular ejection fraction between the two groups at pre-bypass, pericardial closure and sternal closure. In both groups, the right ventricular ejection fraction and cardiac index were not decreased, and the left ventricular ejection fraction was higher at pericardial closure than pre-bypass. However, in both groups, there was a decrease in the right andleft ventricular stroke work index and right ventricular stroke volume index at sternal closure. CONCLUSIONS: We have concluded that simultaneous cardioplegia delivery via the coronary sinus and grafted vessel to the obstructed right coronary artery was not superior to the alternative cardioplegia delivery via the aortic root and coronary sinus for preservation of right ventricular function in patients undergoing a right CABG.
Cardiopulmonary Bypass
;
Coronary Artery Bypass*
;
Coronary Sinus
;
Coronary Vessels*
;
Heart Arrest, Induced*
;
Hemodynamics
;
Humans
;
Stroke
;
Stroke Volume
;
Transplants
;
Ventricular Function, Right
8.Mixed Germ Cell Tumor in a Patient with Turner Syndrome.
So Young HWANG ; Hae Kyoung HUR ; Jae Hwan KWAK ; Tai Young HWANG ; Sook Hee HONG ; Hyun Ho KIM ; Goo Hwa JE
Korean Journal of Gynecologic Oncology and Colposcopy 1996;7(4):326-331
In this report, we describe ovarian mixed germ cell tumor in a patient with Turner syndrome. Right ovary was replaced by a 15 x 11 x 10cm teratomatous benign tissue and small area of mixed malignant germ cell tissue. The malignant germ cell portion was composed of embryonal carcinoma and loose reticular area of yolk sac tumor and syncytiotrophoblastic giant cells. Left ovary was streak gonad. This is the first reported case of mixed germ cell tumor with Turner syndrome in Korea.
Carcinoma, Embryonal
;
Endodermal Sinus Tumor
;
Female
;
Germ Cells*
;
Giant Cells
;
Gonads
;
Humans
;
Korea
;
Neoplasms, Germ Cell and Embryonal*
;
Ovary
;
Trophoblasts
;
Turner Syndrome*
9.The Properties of Antibiotic and NSAIDs Administration Before Extract of the Impacted Mandibular Third Molar.
Yong Kab KIL ; Hee In KANG ; Kyoung Soo KIM ; Jae Seong KIM ; Myung Ho KWAK ; Hyun Soo SEO ; Soon Min HONG ; Jun Woo PARK
Journal of the Korean Association of Maxillofacial Plastic and Reconstructive Surgeons 2009;31(6):505-509
10.A retrospective study of 16 cats with intermediate- to high-grade alimentary lymphoma
Dong-Hyuk KWAK ; Mun-Ju CHO ; Hyung-Jin PARK ; Kun-Ho SONG ; Kyoung Won SEO
Korean Journal of Veterinary Research 2021;61(1):e8-
The purpose of this retrospective study was to describe cases of feline intermediate- to high-grade alimentary lymphoma regarding signalment, clinical presentation, laboratory findings, response to therapy (modified 25-week University of Wisconsin–Madison [UW-25] vs. COP [cyclophosphamide, vincristine, prednisone]), toxicosis, and outcomes and to identify prognostic factors. Sixteen cats were treated with chemotherapy protocols. Response rates and survival did not differ statistically between the two protocols. The progression-free interval (PFI) and median survival time (MST) in cats achieving a response to therapy were longer than in those with no response [NR] (complete remission [CR] vs. partial remission [PR] vs. NR; PFI, 124 vs. 49 vs. 12 days, p < 0.001; MST, 361 vs. 118 vs. 16 days, p < 0.001). Clinical stage was another prognostic factor for PFI and MST. The PFI and MST in cats in stage I were longer than in those in other stages (PFI, 107 days vs. 30 days; MST, 193 days vs. 54 days). Hematologic and gastrointestinal toxicosis was mostly low grade. In comparing the modified UW-25 protocol with the COP protocol, there was not much difference in the number of neutropenic episodes and grade levels.