OBJECTIVE: To evaluate the effects of heel-opened ankle foot orthosis (HOAFO) on hemiparetic gait after stroke, especially on external foot rotation, and to compare the effects of HOAFO with conventional plastic-AFO (pAFO) and barefoot during gait. METHODS: This cross-over observational study involved 15 hemiparetic patients with external rotation of the affected foot. All subjects were able to walk independently, regardless of their usual use of a single cane, and had a less than fair-grade in ankle dorsiflexion power. Each patient was asked to walk in three conditions with randomized sequences: 1) barefoot, 2) with a pAFO, and 3) with an HOAFO. Their gait patterns were analyzed using a motion analysis system. RESULTS: Fifteen patients consisted of nine males and six females. On gait analysis, hip and foot external rotation were significantly greater in pAFO (-3.35degrees and -23.68degrees) than in barefoot and HOAFO conditions (p<0.05). Wearing an HOAFO resulted in significant decreases in hip (0.78degrees, p=0.04) and foot (-17.99degrees, p<0.01) external rotation compared with pAFO; although there was no significant difference between HOAFO and barefoot walking. Walking speed and percentage of single limb support were significantly greater for HOAFO than in barefoot walking. CONCLUSION: HOAFO was superior to pAFO in reducing hip and foot external rotation during the stance phase in patients with post-stroke hemiparesis. HOAFO may, therefore, be useful in patients with excessive external rotation of the foot during conventional pAFO.
Animals ; Ankle ; Canes ; Extremities ; Female ; Foot ; Foot Orthoses ; Foot Rot ; Gait ; Hip ; Humans ; Male ; Orthotic Devices ; Paresis ; Stroke ; Walking

The purpose of this study was to understand the comprehensive relationship among sense of coherence, clinical practice stress, and major satisfaction of students in the department of dental hygiene. From four local universities, departments of dental hygiene were selected: two departments represented a three-year curriculum system and two represented a four-year curriculum system. Data from the final questionnaires of 319 students were analyzed. Differences between variables were analyzed using t-tests and ANOVAs, and correlations were checked using Pearson's correlation coefficients. Path analysis was conducted to analyze the relationship among clinical practice stress, sense of coherence, and major satisfaction. The results indicated that clinical practice stress had a negative influential relationship with both sense of coherence, and major satisfaction. In addition, sense of coherence had a positive influential relationship with major satisfaction. The direct and indirect effects among factors displayed significant differences, indicating that clinical practice stress has a partial mediation effect on sense of coherence and major satisfaction. Therefore, major satisfaction can be increased by developing and implementing programs to improve sense of coherence.
Curriculum ; Humans ; Negotiating ; Oral Hygiene* ; Sense of Coherence*

OBJECTIVE: To confirm functional improvement in brain tumor patients after 4-week conventional rehabilitation therapy, to compare the cognitive impairment of brain tumor patients with subacute stroke patients using computerized neuropsychological testing, and to determine the effects on functional outcomes of daily activity. METHODS: From April 2008 to December 2012, 55 patients (29 brain tumor patients and 26 subacute stroke patients) were enrolled. All patients were assessed with a computerized neuropsychological test at baseline. Motricity Index, Korean version of Mini Mental Status Examination, and Korean version of Modified Barthel Index scores were assessed at the beginning and end of 4-week rehabilitation. Conventional rehabilitation therapy was applied to both groups for 4 weeks. RESULTS: Functional outcomes of all patients in both groups significantly improved after 4-week rehabilitation therapy. In brain tumor patients, the initial Motricity Index, cognitive dysfunction, and visual continuous performance test correction numbers were strong predictors of initial daily activity function (R2=0.778, p<0.01). The final Motricity Index and word-black test were strong predictors of final daily activity function (R2=0.630, p<0.01). In patients with subacute stroke, the initial Motricity index was an independent predictor of initial daily activity function (R2=0.245, p=0.007). The initial daily activity function and color of color word test were strong predictors of final daily activity function (R2=0.745, p<0.01). CONCLUSION: Conventional rehabilitation therapy induced functional improvement in brain tumor patients. Objective evaluation of cognitive function and comprehensive rehabilitation including focused cognitive training should be performed in brain tumor patients for improving their daily activity function.
Brain Neoplasms* ; Brain* ; Humans ; Neuropsychological Tests ; Rehabilitation* ; Stroke*

Flavonoids, which form a major component in Houttuynia cordata Thunb., display a wide range of pharmacological activities. The expression of plant flavonoids is partly regulated by fermentation. Therefore, we studied the effects of fermentation on H. cordata in order to identify the strains present during the fermentation process, and to determine whether fermented H. cordata could be used as a probiotic. Our results showed that all 6 of the bacterial strains isolated from fermented H. cordata (FHC) belonged to the genus Bacillus. As expected, fermenting H cordata also increased the flavonoid content as increases were observed in the levels of rutin, quercitrin, and quercetin. To test the effects of fermentation, we treated LPS-stimulated RAW264.7 cells with non-fermented H. cordata extracts (HCE) or FHC extracts (FHCE). Compared to the HCE-treated cells, the FHCE-treated cells showed increased viability. No cytotoxic effects were detected in the FHCE-treated groups in the 2 cell lines used in the study, namely, RAW264.7 and RBL-2H3. FHCE-treated HepG2 cells showed decreased growth, compared to HCE-treated HepG2 cells. These results indicate that the fermented H. cordata predominantly contained Bacillus strains. Furthermore, FHCE are able to prevent LPS-induced inflammatory effects and inhibit the growth of HepG2 cells.
Bacillus ; Cell Line ; Fermentation ; Flavonoids ; Hep G2 Cells ; Houttuynia ; Plants ; Probiotics ; Quercetin ; Rutin

Background/Aims: Esophageal cancer is not an uncommon cancer in Korea, however, the prognosis still remains very poor with a 5 year survival rate bemg less than l0% mainly becauae of the delayed diagnosis. Although chromoscopy with lugol solution has been received to diagnose the esophageal cancer in an early stage without difficulty, its clinical use has not been popular yet in Korea. This study was performed prospectively to evaluate the usefulness of the chromoscopy for the detection of superficial esophageal cancer in risk patients for esophageal cancer. Methods: Ninety-five patients were selected among persons who received gasiroscopy at Asan Medical Center between Jan. 1996 and May 1996 and were prospectively included for chromoscopy. Inclusion criteria for the chromoscopy were patients older than 60 years of age with smoking history of more than 30 packyears, and/or past or family history of cancers. After conventional endoscopic examination, lugol solution was sprayed to stain the glycogen granules in the epithelial cells. The size of unstained lesion was measured and stainability was classified into 5 grades. All lesions unstained were biopsied for histological diagnosis.(continue...)
Chungcheongnam-do ; Delayed Diagnosis ; Epithelial Cells ; Esophageal Neoplasms* ; Glycogen ; Humans ; Korea ; Prognosis ; Prospective Studies ; Smoke ; Smoking ; Survival Rate

BACKGROUND AND PURPOSE: Childhood absence epilepsy (CAE) is one of the most common types of pediatric epilepsy. It is generally treated with ethosuximide (ESM), valproic acid (VPA), or lamotrigine (LTG), but the efficacy and adverse effects of these drugs remain controversial. This study compared initial therapy treatment outcomes, including VPA-LTG combination, and assessed clinical factors that may predict treatment response and prognosis. METHODS: Sixty-seven patients with typical CAE were retrospectively enrolled at the Korea University Medical Center. We reviewed patients' clinical characteristics, including age of seizure onset, seizure-free interval, duration of seizure-free period, freedom from treatment failure, breakthrough seizures frequency, and electroencephalogram (EEG) findings. RESULTS: The age at seizure onset was 7.9±2.7 years (mean±SD), and follow-up duration was 4.4±3.7 years. Initially, 22 children were treated with ESM (32.8%), 23 with VPA (34.3%), 14 with LTG (20.9%), and 8 with VPA-LTG combination (11.9%). After 48 months of therapy, the rate of freedom from treatment failure was significantly higher for the VPA-LTG combination therapy than in the three monotherapy groups (p=0.012). The treatment dose administrated in the VPA-LTG combination group was less than that in the VPA and LTG monotherapy groups. The shorter interval to loss of 3-Hz spike-and-wave complexes and the presence of occipital intermittent rhythmic delta activity on EEG were significant factors predicting good treatment response. CONCLUSIONS: This study showed that low-dose VPA-LTG combination therapy has a good efficacy and fewer side effects than other treatments, and it should thus be considered as a firstline therapy in absence epilepsy.
Academic Medical Centers ; Child ; Electroencephalography ; Epilepsy ; Epilepsy, Absence* ; Ethosuximide ; Follow-Up Studies ; Freedom ; Humans ; Korea ; Prognosis ; Retrospective Studies ; Seizures ; Treatment Failure ; Valproic Acid

Ictal tachycardia and bradycardia are common arrhythmias; however, ictal sinus pause and asystole are rare. Ictal arrhythmia is mostly reported in adults with temporal lobe epilepsy. Recently, ictal arrhythmia was recognized as a major warning sign of sudden unexpected death in epilepsy. We present an interesting case of a child with ictal sinus pause and asystole. A 27-month-old girl was hospitalized due to 5 episodes of convulsions during the past 2 days. Results of routine electroencephalography (EEG) were normal, but she experienced brief generalized tonic seizure for 3 days. During video-monitored EEG and echocardiography (ECG), she showed multiple myoclonic seizures simultaneously or independently, as well as frequent sinus pauses. After treatment with valproic acid, myoclonus and generalized tonic seizures were well controlled and only 2 sinus pauses were seen on 24-hour Holter ECG monitoring. Sinus dysfunction should be recognized on EEG, and it can sometimes be treated successfully with only antiepileptic medication.
Adult ; Arrhythmias, Cardiac ; Bradycardia ; Child* ; Child, Preschool ; Echocardiography ; Electrocardiography ; Electroencephalography ; Epilepsy ; Epilepsy, Temporal Lobe ; Female ; Heart Arrest ; Humans ; Myoclonus ; Seizures* ; Tachycardia ; Valproic Acid

BACKGROUND AND OBJECTIVES: Laryngeal electromyography (LEMG) is valuable to evaluate the innervation status of the laryngeal muscles and the prognosis of vocal fold paralysis (VFP). However, there is a lack of agreement on quantitative interpretation of LEMG. The aim of this study is to measure the motor unit action potentials (MUAP) quantitatively in order to find cut-off values of amplitude, duration, phase for unilateral vocal fold paralysis patients. MATERIALS AND METHOD: Retrospective chart review was performed for the unilateral VFP patients who underwent LEMG from March 2016 to May 2018. Patient's demography, cause of VFP, vocal cord mobility, and LEMG finding were analyzed. The difference between normal and paralyzed vocal folds and cut-off values of duration, amplitude, and phase in MUAP were evaluated. RESULTS: Thirty-six patients were enrolled in this study. Paralyzed vocal fold had significantly longer duration (p=0.021), lower amplitude (p=0.000), and smaller phase (p=0.012) than the normal. The cut-off values of duration, amplitude, and phase in MUAP for unilateral VFP were 5.15 ms, 68.35 µV, and 1.85 respectively. CONCLUSION: An analysis of MUAP successfully provided quantitative differences between normal and paralyzed vocal folds. But, additional research is needed to get more available cut-off value which is helpful to evaluate the status of laryngeal innervations.
Action Potentials ; Demography ; Electromyography ; Humans ; Laryngeal Muscles ; Methods ; Paralysis ; Prognosis ; Retrospective Studies ; Vocal Cord Paralysis ; Vocal Cords

BACKGROUND: Dependent self-employment is precarious employment, which can be vulnerable to mental health problems. This study aimed to investigate the association of dependent self-employment with depression, anxiety, and sleep disorder in South Korea. METHODS: This study used data from the Fourth Korean Working Conditions Survey and included 32,691 paid workers. Dependent self-employment and self-reported depression/anxiety, and sleep disorder were investigated using a questionnaire. Logistic regression analysis was performed to investigate the association between dependent self-employment and mental health problems. RESULTS: Of the 32,691 paid workers, 2,371 (7.3%) were dependent self-employed workers. The odds ratio (OR) of dependent self-employment for self-reported depression/anxiety was 1.78 (95% confidence interval [CI]: 1.29–2.45) and the OR of dependent self-employment for self-reported sleep disorder was 1.26 (95% CI: 1.01–1.59) compared to other paid workers. CONCLUSIONS: Dependent self-employment is related to an increased risk of self-reported depression/anxiety and sleep disorder in South Korea.
Anxiety ; Depression ; Employment ; Korea ; Logistic Models ; Mental Health ; Odds Ratio ; Sleep Wake Disorders

Background: Change in working time arrangement (WTA) can be harmful to workers' sleep and health. This study aimed to investigate the association between change in working time arrangement and sleep disturbance. Methods: This study used data from the Fifth Korean Working Condition Survey and included 33,203 paid workers. We performed a stratified analysis by sex. After dividing the participants into 6 groups based on whether or not they experienced WTA changes, and their weekly working hours (≤40, 41–52, ≥53 hours), we calculated odds ratio (OR) using the weekly working hours ≤40 hours and with no WTA change as the reference group. Results: Of the 33,203 paid workers, participants who experienced change in working time arrangement had higher prevalence of all three types of sleep disturbance symptoms (difficulty in falling asleep, waking up repeatedly during sleep, and waking up with a feeling of exhaustion and fatigue) in both sexes. Compared to the reference group at 95% confidence interval (CI), the group with change in WTA showed elevated OR values of 1.91 (95% CI:1.73–2.11), 1.93 (95% CI: 1.74–2.14), 2.47 (95% CI: 2.26–2.71) for male workers; and 1.93 (95% CI: 1.73–2.16), 2.02 (95% CI: 1.80–2.27), 2.24 (95% CI: 2.01–2.50) for female workers, for difficulty in falling asleep, waking up repeatedly during the sleep, waking up with a feeling of exhaustion, and fatigue, respectively. Conclusions Workers who experience change in work time arrangement show a high risk of sleep disturbance in both sexes.