1.Shear bond strength of porcelain repair resins to nonprecious ceramo-metal alloy.
Joon Young ANN ; Jung Soo BAE ; Dong Hoo HAN
The Journal of Korean Academy of Prosthodontics 1991;29(2):195-209
No abstract available.
Alloys*
;
Dental Porcelain*
2.Evaluation of stability after pre-orthodontic orthognathic surgery using cone-beam computed tomography: A comparison with conventional treatment.
Hye Rim ANN ; Young Soo JUNG ; Kee Joon LEE ; Hyoung Seon BAIK
The Korean Journal of Orthodontics 2016;46(5):301-309
OBJECTIVE: The aim of this study was to evaluate the skeletal and dental changes after intraoral vertical ramus osteotomy (IVRO) with and without presurgical orthodontics by using cone-beam computed tomography (CBCT). METHODS: This retrospective cohort study included 24 patients (mean age, 22.1 years) with skeletal Class III malocclusion who underwent bimaxillary surgery with IVRO. The patients were divided into the preorthodontic orthognathic surgery (POGS) group (n = 12) and conventional surgery (CS) group (n = 12). CBCT images acquired preoperatively, 1 month after surgery, and 1 year after surgery were analyzed to compare the intergroup differences in postoperative three-dimensional movements of the maxillary and mandibular landmarks and the changes in lateral cephalometric variables. RESULTS: Baseline demographics (sex and age) were similar between the two groups (6 men and 6 women in each group). During the postsurgical period, the POGS group showed more significant upward movement of the mandible (p < 0.05) than did the CS group. Neither group showed significant transverse movement of any of the skeletal landmarks. Moreover, none of the dental and skeletal variables showed significant intergroup differences 1 year after surgery. CONCLUSIONS: Compared with CS, POGS with IVRO resulted in significantly different postsurgical skeletal movement in the mandible. Although both groups showed similar skeletal and dental outcomes at 1 year after surgery, upward movement of the mandible during the postsurgical period should be considered to ensure a more reliable outcome after POGS.
Cohort Studies
;
Cone-Beam Computed Tomography*
;
Demography
;
Female
;
Humans
;
Male
;
Malocclusion
;
Mandible
;
Orthodontics
;
Orthognathic Surgery*
;
Osteotomy
;
Retrospective Studies
3.Clinical Study of the Intravenous Amiodarone in Acute Myocardial Infarction with Life-Threatening Refractory Ventricular Tachyarrhythmias.
Yu Jeong CHOI ; Sang Wook LIM ; Jae Wan PARK ; Kyung Wha WHANG ; In Sup ANN ; Joon Young KIM ; Jane C OH ; Pil Won PARK ; Tae Yong KIM ; Yoon Kyung CHO ; Dong Hoon CHA
Korean Circulation Journal 1998;28(8):1314-1321
BACKGROUND: Recently, the amiodarone has emerged as a promising antiarrhythmic agent and its efficacy and safety has been widely accepted with many literatures. But there was no general agreement regarding the dosage and indication of intravenous (IV) amiodarone in acute myocardial infarction with life-threatening refractory ventricular tachyarrhythmias. METHOD: From October 1995 through October 1997, we recruited retrospectively 9 patients of acute myocardial infarction who had received IV amiodarone for life-threatening refractory ventricular tachyarrhythmias and analyzed the initial response, adverse effect, and loading dose. RESULTS: 1) Acute efficacy:Eight of 9 patients promptly restored normal sinus rhythm immediately after intravenous amiodarone administration. 2) In-Hospital Mortality:One patients died due to ventricular tachyarrhythmias refractory to aggressive management and 5 in 8 patients who had responded promptly with IV amiodarone discharged alive and other 3 patients died due to cardiogenic shock with normal sinus rhythm. 3) Immediate adverse effects:Five patients experienced immediate adverse effects after IV amiodarone; 3 patients of hypotension, 1 patient of first degree AV block, and the other of Morbitz type 2 AV block. 4) Long term follow-up:Among 5 patients discharged alive, one died as unexpected consequence. Other 4 patients have been still alive without maintenance medication. CONCLUSION: The IV amiodarone for suppression of life-threatening ventricular tachyarrhythmias in patients with acute myocardial infarction seemed to be an effective second-line therapeutic drug and have acceptable adverse effects. In the future, the large scale study regarding the dosage and indication might be warrented.
Amiodarone*
;
Atrioventricular Block
;
Humans
;
Hypotension
;
Myocardial Infarction*
;
Retrospective Studies
;
Shock, Cardiogenic
;
Tachycardia*
4.Synchronous double cancer of rectal non-Hodgkin lymphoma and lung cancer: 1 case report.
Hyeon Jeong KIM ; Kwang Soon ANN ; Ji Hyeon OH ; Moo Yeol LEE ; Hoon CHO ; Young Muk KIM ; Joon Sang LEE
Korean Journal of Medicine 2006;70(4):462-466
Colorectal lymphomas constitute 10~20% of gastrointestinal lymphomas and arerelatively rarer than lymphomas which involve stomach or small intestine. Rectal lymphomas compose fewer than 1% of malignant rectal tumors. Although there are several case reports and reviews about non-Hodgkin lymphoma associated with primary lung cancer in Korea, the case of synchronous double cancer of rectal lymphoma and primary lung cancer was not reported yet. We report a case of synchronous double primary cancer of rectal lymphoma and squamous cell carcinoma of lung in 71-year-old man who presented with incidental right upper lung mass.
Aged
;
Carcinoma, Squamous Cell
;
Humans
;
Intestine, Small
;
Korea
;
Lung Neoplasms*
;
Lung*
;
Lymphoma
;
Lymphoma, Non-Hodgkin*
;
Rectal Neoplasms
;
Stomach
5.Characteristics of Faecal Microbiota in Korean Patients with Clostridioides difficile-associated Diarrhea
Yong Duk JEON ; Hea Won ANN ; Woon Ji LEE ; Jun Hyoung KIM ; Hye SEONG ; Jung Ho KIM ; Jin Young AHN ; Su Jin JEONG ; Nam Su KU ; Joon Sup YEOM ; Dongeun YONG ; Kyungwon LEE ; Jun Yong CHOI
Infection and Chemotherapy 2019;51(4):365-375
BACKGROUND:
The intestinal microbiota plays an important role in the pathogenesis of Clostridioides difficile-associated diarrhea, and regional and racial characteristics influence the microbiome composition and diversity. We investigated the intestinal microbiome characteristics of patients with C. difficile colitis (CD+) compared to those of patients with colitis not due to C. difficile (CD−), patients with vancomycin-resistant enterococci (VRE) colonization, and healthy controls, in Korea.
MATERIALS AND METHODS:
We collected stool samples from 24, 18, 11 and 13 subjects within CD+, CD−, VRE and healthy control groups, respectively. The microbial communities were evaluated by 454-pyrosequencing of bacterial 16s rRNA.
RESULTS:
The species richness and microbial diversity were significantly lower in the CD+ group compared to those in healthy controls, but not compared to those in CD− and VRE groups. Phylum-level analysis showed that the proportion of Actinobacteria in the CD+ group was significantly lower than in the healthy control, but was unchanged compared to that in CD− and VRE groups. At the genus level, compared to the healthy group, the CD+ group showed significantly lower proportions of Blautia, Bifidobacterium, Faecalibacterium et al. Compared to the VRE group, the CD+ group showed a significantly higher proportion of Anaerostipes.
CONCLUSIONS
We could identify the intestinal microbiome characteristics of Koreans with C. difficile colitis. It might help to develop microbiome based diagnostic and treatment modalities.
6.Incidence and Risk Factors for Surgical Site Infection after Gastric Surgery: A Multicenter Prospective Cohort Study.
Su Jin JEONG ; Hea Won ANN ; Jae Kyung KIM ; Heun CHOI ; Chang Oh KIM ; Sang Hoon HAN ; Jun Yong CHOI ; Kyong Ran PECK ; Cheol In KANG ; Joon Sup YEOM ; Young Hwa CHOI ; Seung Kwan LIM ; Young Goo SONG ; Hee Jung CHOI ; Hee Jung YOON ; Hyo Youl KIM ; Young Keun KIM ; Min Ja KIM ; Yoon Seon PARK ; June Myung KIM
Infection and Chemotherapy 2013;45(4):422-430
BACKGROUND: Surgical site infection (SSI) is a potentially morbid and costly complication of surgery. While gastrointestinal surgery is relatively common in Korea, few studies have evaluated SSI in the context of gastric surgery. Thus, we performed a prospective cohort study to determine the incidence and risk factors of SSI in Korean patients undergoing gastric surgery. MATERIALS AND METHODS: A prospective cohort study of 2,091 patients who underwent gastric surgery was performed in 10 hospitals with more than 500 beds (nine tertiary hospitals and one secondary hospital). Patients were recruited from an SSI surveillance program between June 1, 2010, and August 31, 2011 and followed up for 1 month after the operation. The criteria used to define SSI and a patient's risk index category were established according to the Centers for Disease Control and Prevention and the National Nosocomial Infection Surveillance System. We collected demographic data and potential perioperative risk factors including type and duration of the operation and physical status score in patients who developed SSIs based on a previous study protocol. RESULTS: A total of 71 SSIs (3.3%) were identified, with hospital rates varying from 0.0 - 15.7%. The results of multivariate analyses indicated that prolonged operation time (P = 0.002), use of a razor for preoperative hair removal (P = 0.010), and absence of laminar flow in the operating room (P = 0.024) were independent risk factors for SSI after gastric surgery. CONCLUSIONS: Longer operation times, razor use, and absence of laminar flow in operating rooms were independently associated with significant increased SSI risk after gastric surgery.
Centers for Disease Control and Prevention (U.S.)
;
Cohort Studies*
;
Cross Infection
;
Hair Removal
;
Humans
;
Incidence*
;
Korea
;
Multivariate Analysis
;
Operating Rooms
;
Prospective Studies*
;
Risk Factors*
;
Tertiary Care Centers
7.Impact of Diabetes Control on Subclinical Atherosclerosis: Analysis from Coronary Computed Tomographic Angiography Registry
Gyung-Min PARK ; Chang Hoon LEE ; Seung-Whan LEE ; Sung-Cheol YUN ; Young-Hak KIM ; Yong-Giun KIM ; Ki-Bum WON ; Soe Hee ANN ; Shin-Jae KIM ; Dong Hyun YANG ; Joon-Won KANG ; Tae-Hwan LIM ; Eun Hee KOH ; Woo Je LEE ; Min-Seon KIM ; Joong-Yeol PARK ; Hong-Kyu KIM ; Jaewon CHOE ; Sang-Gon LEE
Diabetes & Metabolism Journal 2020;44(3):470-479
There are limited data on the impact of diabetes control on the risk of subclinical coronary atherosclerosis. We analyzed 6,434 consecutive asymptomatic individuals without previous history of coronary artery disease who underwent coronary computed tomographic angiography (CCTA) (mean age, 53.7±7.6 years and 4,694 men [73.0%]). The degree and extent of subclinical coronary atherosclerosis were assessed by CCTA, and ≥50% diameter stenosis was defined as significant. A cardiac event was defined as a composite of all-cause death, myocardial infarction, unstable angina, or coronary revascularization. Study participants were categorized as normal ( Compared with normal individuals, there were no statistically significant differences in the risk of for any atherosclerotic plaque (odds ratio [OR], 1.16; 95% confidence interval [CI], 0.98 to 1.38; Asymptomatic uncontrolled diabetes was associated with significant subclinical coronary atherosclerosis with subsequent high risk for cardiac events.
8.Device Closure or Antithrombotic Therapy After Cryptogenic Stroke in Elderly Patients With a High-Risk Patent Foramen Ovale
Pil Hyung LEE ; Jung-Sun KIM ; Jae-Kwan SONG ; Sun U. KWON ; Bum Joon KIM ; Ji Sung LEE ; Byung Joo SUN ; Jong Shin WOO ; Soe Hee ANN ; Jung-Won SUH ; Jun Yup KIM ; Kyusup LEE ; Sang Yeub LEE ; Ran HEO ; Soo JEONG ; Jeong Yoon JANG ; Jang-Whan BAE ; Young Dae KIM ; Sung Hyuk HEO ; Jong S. KIM
Journal of Stroke 2024;26(2):242-251
Background:
and Purpose In young patients (aged 18–60 years) with patent foramen ovale (PFO)- associated stroke, percutaneous closure has been found to be useful for preventing recurrent ischemic stroke or transient ischemic attack (TIA). However, it remains unknown whether PFO closure is also beneficial in older patients.
Methods:
Patients aged ≥60 years who had a cryptogenic stroke and PFO from ten hospitals in South Korea were included. The effect of PFO closure plus medical therapy over medical therapy alone was assessed by a propensity-score matching method in the overall cohort and in those with a high-risk PFO, characterized by the presence of an atrial septal aneurysm or a large shunt.
Results:
Out of the 437 patients (mean age, 68.1), 303 (69%) had a high-risk PFO and 161 (37%) patients underwent PFO closure. Over a median follow-up of 3.9 years, recurrent ischemic stroke or TIA developed in 64 (14.6%) patients. In the propensity score-matched cohort of the overall patients (130 pairs), PFO closure was associated with a significantly lower risk of a composite of ischemic stroke or TIA (hazard ratio [HR]: 0.45; 95% confidence interval [CI]: 0.24–0.84; P=0.012), but not for ischemic stroke. In a subgroup analysis of confined to the high-risk PFO patients (116 pairs), PFO closure was associated with significantly lower risks of both the composite of ischemic stroke or TIA (HR: 0.40; 95% CI: 0.21–0.77; P=0.006) and ischemic stroke (HR: 0.47; 95% CI: 0.23–0.95; P=0.035).
Conclusion
Elderly patients with cryptogenic stroke and PFO have a high recurrence rate of ischemic stroke or TIA, which may be significantly reduced by device closure.