As dental implant treatment becomes popular for both partial and complete edentulous patients, old people with complex systemic diseases also tend to prefer implant-assisted-overdenture or implant-supported-fixed prostheses to conventional complete denture. In this case, 77-year-old female who was on medication for hypertension and osteoporosis and paralyzed on right side due to stroke visited for implant-assisted-overdenture on lower jaw. After oral and radiographic examination, root-assisted magnet overdenture on upper jaw and implant-assisted magnet overdenture on lower jaw are planned. Consequently, overdentures using self-adjusting magnetic attachment(SA) system on both jaws resulted in recovering satisfying function and retention, which is enable to insert and remove with only one hand.
Aged ; Dental Implants ; Denture, Complete ; Denture, Overlay* ; Female ; Hand ; Humans ; Hypertension ; Jaw ; Osteoporosis ; Prostheses and Implants ; Rehabilitation* ; Stroke

No abstract available.
Meningioma* ; Visual Fields*

The author names were mistakenly given as Richard Sungbok Lee in the original article. It should be corrected as Richard Leesungbok.

BACKGROUND AND PURPOSE: Little is known about the relationships between provoking risk factors, prognosis, and optimal duration of anticoagulation in patients with cerebral venous thrombosis (CVT), especially in Asians. We aimed to investigate whether the prognosis and required duration of anticoagulation in CVT patients differ according to the provoking risk factors. METHODS: Prospectively recorded data from a tertiary medical center in South Korea were retrospectively reviewed. CVTs were categorized into three groups: unprovoked, those with possibly resolved provoking factors (PR), and those with persistent provoking factors (PP). The baseline characteristics, treatment, and prognosis of patients in these three groups were analyzed. RESULTS: From 2000 to 2015, 61 patients presented with CVT: 19 (31.1%) unprovoked, 11 (18.0%) with PR, and 31 (50.9%) with PP. The patients in our cohort had a slight female predominance and lower frequency of oral contraceptive use compared to Western cohorts. Median follow-up and duration of anticoagulation were 35 and 8 months, respectively. Despite the similarities in baseline characteristics, deaths (n=3; P=0.256) and recurrences (n=7; P=0.020) were observed only in the PP group. The median intervals to death and recurrence were 9 and 13 months, respectively. Death was associated with underlying disease activity, not with CVT progression. Recurrences in the PP group were associated with lack of anticoagulation (P=0.012). CONCLUSIONS: Although the prognosis of CVT is generally benign in Koreans, recurrence and death were observed in patients with persistent risk factors, suggesting their need for long-term treatment with anticoagulants.
Anticoagulants ; Asian Continental Ancestry Group ; Cohort Studies ; Female ; Follow-Up Studies ; Humans ; Korea ; Prognosis* ; Prospective Studies ; Recurrence ; Retrospective Studies ; Risk Factors* ; Venous Thrombosis*

Background: A nationwide outbreak of foot-and-mouth disease (FMD) in South Korea caused massive economic losses in 2010. Since then, the Animal and Plant Quarantine Agency (QIA) has enhanced disinfection systems regarding livestock to prevent horizontal transmission of FMD and Avian influenza (AI). Although the amount of disinfectant used continues to increase, cases of FMD and AI have been occurring annually in Korea, except 2012 and 2013. Objectives: This study measured the concentration of the disinfectant to determine why it failed to remove the horizontal transmission despite increased disinfectant use. Methods: Surveys were conducted from February to May 2017, collecting 348 samples from disinfection systems. The samples were analyzed using the Standards of Animal Health Products analysis methods from QIA. Results: Twenty-three facilities used inappropriate or non-approved disinfectants. Nearly all sampled livestock farms and facilities—93.9%—did not properly adjust the disinfectant concentration. The percentage using low concentrations, or where no effective substance was detected, was 46.9%. Furthermore, 13 samples from the official disinfection station did not use effective disinfectant, and—among 72 samples from the disinfection station—88.89% were considered inappropriate concentration, according to the foot-and-mouth disease virus guidelines; considering the AIV guideline, 73.61% were inappropriate concentrations. Inappropriate concentration samples on automatic (90.00%) and semi-automatic (90.90%) disinfection systems showed no significant difference from manual methods (88.24%). Despite this study being conducted during the crisis level, most disinfectants were used inappropriately. Conclusions This may partially explain why horizontal transmission of FMD and AI cannot be effectively prevented despite extensive disinfectant use.

The purpose of this study was to investigate the use of decision tree for the classification of antimicrobial peptides. The classification was based on the activities of known antimicrobial peptides against common microbes including Escherichia coli and Staphylococcus aureus. A feature selection was employed to select an effective subset of features from available attribute sets.Sequential applications of decision tree with 17 nodes with 9 leaves and 13 nodes with 7 leaves provided the classification rates of 76.74% and 74.66% against E. coli and S. aureus, respectively. Angle subtended by positively charged face and the positive charge commonly gave higher accuracies in both E. coli and S. aureus datasets. In this study, we describe a successful application of decision tree that provides the understanding of the effects of physicochemical characteristics of peptides on bacterial membrane.
Classification* ; Dataset ; Decision Trees* ; Escherichia coli ; Membranes ; Peptides ; Staphylococcus aureus

Cerebral venous sinus thrombosis is a rare type of cerebrovascular disease with highly variable clinical features. Although intracranial hemorrhage can occur in a patient with cerebral venous sinus thrombosis, the development of subdural hemorrhage has been infrequently reported. Herein we report a 49-year-old woman with cerebral venous sinus thrombosis who developed subdural hemorrhage. We presumed that the elevation of venous or capillary pressure caused by venous sinus thrombosis played an important role in the development of subdural hemorrhage.
Capillaries ; Female ; Hematoma, Subdural ; Humans ; Intracranial Hemorrhages ; Middle Aged ; Sinus Thrombosis, Intracranial

BACKGROUND: The aim of this study was to investigate the current status and identify any existing problems in the allocation system of liver transplantation (LT) for children in Korea. METHODS: The information for the period between January 2006 and March 2012 contained in the Korean Network for Organ Sharing (KONOS) database, and the 2008 and 2010 annual reports from KONOS were analyzed. Detailed information about split LT (SLT) was analyzed using the SLT database which contains data collected since 2010. RESULTS: Of 4,462 cases of LT between January 2006 and December 2010, 243 were pediatric cases (5.4%). Of these pediatric cases, 195 (80.2%) were living donor LT. Of the liver grafts from deceased pediatric donors, 68% were donated to adults and 3.9% were shared with children. Of the 104 splittable donors from January 2010 to March 2012, a split was performed only in 4.6% of cases. The main reason for the low split rate was few pediatric candidate(s) in the waiting list due to strict Korean regulatory requirements for split candidate registration. CONCLUSIONS: Under the current liver transplant allocation system, Korean children have less chance to receive a liver graft from a deceased donor. With improvement of the allocation system and the rules governing SLT, children in need may have greater opportunity to receive a deceased donor graft without negatively affecting adult recipients.
Adult ; Child ; Humans ; Korea ; Liver ; Liver Transplantation ; Living Donors ; Tissue Donors ; Transplants ; Waiting Lists

BACKGROUND AND PURPOSE: The absence of acute ischemic lesions in diffusion-weighted imaging (DWI) in transient ischemic attack (TIA) patients makes it difficult to diagnose the true vascular etiologies. Among patients with DWI-negative TIA, we investigated whether the presence of a perfusion-weighted imaging (PWI) abnormality implied a true vascular event by identifying new acute ischemic lesions in follow-up magnetic resonance imaging (MRI) in areas corresponding to the initial PWI abnormality. METHODS: The included patients underwent DWI and PWI within 72 hours of TIA and also follow-up DWI at 3 days after the initial MRI. These patients had visited the emergency room between July 2009 and May 2015. Patients who demonstrated initial DWI lesions were excluded. The initial PWI abnormalities in the corresponding vascular territory were visually classified into three patterns: no abnormality, focal abnormality, and territorial abnormality. RESULTS: No DWI lesions were evident in initial MRI in 345 of the 443 TIA patients. Follow-up DWI was applied to 87 of these 345 DWI-negative TIA patients. Initial PWI abnormalities were significantly associated with follow-up DWI abnormalities: 8 of 43 patients with no PWI abnormalities (18.6%) had new ischemic lesions, whereas 13 of 16 patients with focal perfusion abnormalities (81.2%) had new ischemic lesions in the areas of initial PWI abnormalities [odds ratio (OR)=15.1, 95% confidence interval (CI)=3.6–62.9], and 14 of 28 patients with territorial perfusion abnormalities (50%) had new lesions (OR=3.7, 95% CI=1.2–11.5). CONCLUSIONS: PWI is useful in defining whether or not the transient neurological symptoms in DWI-negative TIA are true vascular events, and will help to improve the understanding of the pathomechanism of TIA.
Emergency Service, Hospital ; Follow-Up Studies ; Humans ; Ischemic Attack, Transient* ; Magnetic Resonance Imaging ; Perfusion

We report herein a case of subclavian steal syndrome due to occlusive disease in multiple branches of the aortic arch, which was successfully treated by axilloaxillary bypass and subclavian stent insertion. The hemodynamic changes were evaluated using duplex sonography and transcranial Doppler before and after each procedure. The waveform and parameters of blood flow revealed an objective improvement in cerebral perfusion. These findings correlated well with clinical outcome. Neurosonologic evaluation can provide objective evidence for improved hemodynamic status after treatment.
Aorta, Thoracic ; Hemodynamics ; Perfusion ; Stents ; Subclavian Steal Syndrome