OBJECTIVE: To assess neurotoxicity of intrathecal restorative fluid leakage in the course of the intradiscal restorative fluid injection. METHOD: Twenty male Sprague-Dawley rats, body weight range of 300~350 gm, were divided randomly into four groups. Control group, group A (mixed solution of glucosamine hydrochloride 5%, chondroitin sulfate 5%, and bupivacaine hydrochloride 2%), group B (glucosamine hydrochloride 8%, chondroitin sulfate 2%, and bupivacaine hydrochloride 2%) and group C (glucosamine hydrochloride 16%, chondroitin sulfate 2%, and bupivacaine hydrochloride 2%). The behavioral test for cold allodynia (tail flick test) was conducted 1 day prior to the injection and 7 days postoperatively. Histopathologic evaluation was performed using light microscopy by a neuropathologist. The severity of nerve and cord injury were graded according to injury scoring system. RESULTS: Each group showed no significant difference in sensory function test using tail flick test before and after intrathecal restorative fluid injection. Cold allodynia was not showed statistically significant difference among the group. Histological examination showed statistically significant difference between control group and group B, group C, and between group A and group B, C in both cord and root. CONCLUSION: Intrathecal injection of restorative fluid shows neurotoxic changes in roots and spinal cord in histopathologic studies. Although same ingredients of restorative solution, the different concentration of the ingredients revealed different neurotoxicity.
Animals ; Body Weight ; Bupivacaine ; Chondroitin Sulfates ; Glucosamine ; Humans ; Hyperalgesia ; Injections, Spinal ; Male ; Microscopy ; Rats* ; Rats, Sprague-Dawley ; Sensation ; Spinal Cord

Spontaneous spinal epidural hematoma is extremely rare. It can cause fatal complication such as permanent neurologic deficit. Even though the exact cause of epidural hematoma is not known in most cases, anticoagulation treatment is associated in some cases. In this situation, prompt reversal of anticoagulation and immediate decompression surgery is required. Seventy-year-old woman presesnted with sudden hemiplegia. She had history of hypertension, dyslipidemia, and paroxysmal atrial fibrillation and had taken antihypertensive agent, statin, and warfarin. She did not have any history of trauma and her international normalized ratio was within therapeutic range during follow-up and at the time of event. Physical examination revealed decreased right extremities' motor and sensory function but cognitive function was normal. Detailed neurologic examination and spinal magnetic resonance imaging identified extensive, spontaneous spinal epidural hematoma. After the reversal of anticoagulation with vitamin K injection, the patient underwent emergent hematoma removal surgery and recovered completely. Our case suggests epidural hematoma should be considered in sudden hemiplegia patients with anticoagulation therapy. Immediate reversal of anticoagulation and decompression surgery can avoid neurologic deficit.
Atrial Fibrillation ; Decompression ; Dyslipidemias ; Female ; Follow-Up Studies ; Hematoma* ; Hematoma, Epidural, Spinal ; Hemiplegia* ; Humans ; Hydroxymethylglutaryl-CoA Reductase Inhibitors ; Hypertension ; International Normalized Ratio* ; Magnetic Resonance Imaging ; Neurologic Examination ; Neurologic Manifestations ; Physical Examination ; Sensation ; Vitamin K ; Warfarin*

No abstract available.
Accessory Atrioventricular Bundle ; Electrocardiography ; Tachycardia*

BACKGROUND AND OBJECTIVES: Systemic activation of the inflammatory system after aortic injury may play a role in the development of complications. The aim of this study was to determine the significance of the inflammatory markers for the mortality of patients suffering with medically treated type B acute aortic syndrome (AAS). SUBJECTS AND METHODS: We analyzed a total of 81 patients who were admitted with AAS within 24 hours from the onset of the symptoms and who were medically treated between January 2000 and December 2004. The patients were divided into two groups: the moribund patients who died within 2 weeks (group I: n=8, mean age: 64.0+/-11.0 years) and the patients who survived over 2 weeks (group II: n=73, mean age: 62.6+/-13.7 years). The serum high-sensitivity C-reactive protein (hsCRP) levels, the white blood cell (WBC) and monocyte counts, and the plasma D-dimer levels were measured on admission. RESULTS: The baseline clinical characteristics were not different between the two groups. The major causes of in-hospital death in group I were extensions or rupture of type B dissection (6 cases) and acute renal failure (2 cases). The multivariate analysis demonstrated that a high monocyte count (>1,250/mm3), and high levels of hsCRP (>11 mg/dL) and D-dimer (>1.2 mg/dL) were independent determinants of the short-term mortality (OR=6.39, 6.14 and 9.00; 95% CI=1.19 to 34.1, 1.14 to 32.9 and 1.20 to 67.4; p=0.02, 0.04 and 0.03, respectively). CONCLUSION: Systemic activation of the inflammatory system in type B AAS patients may be one of the important factors associated with the development of short-term mortality.
Acute Kidney Injury ; C-Reactive Protein ; Humans ; Inflammation ; Leukocytes ; Monocytes ; Mortality* ; Multivariate Analysis ; Plasma ; Prognosis ; Rupture

Stent thrombosis is a fatal complication in patients who have undergone percutaneous coronary intervention, and discontinuation of anti-platelet agent is a major risk factor of stent thrombosis. We report a rare case of very late stent thrombosis (VLST) following discontinuation of anti-platelet agents in a patient who experienced acute myocardial infarction and essential thrombocytosis. She had undergone implantation of a drug eluting stent (DES) and a bare metal stent (BMS) two and half years prior to her presentation. VLST developed in DES, not in BMS, following interruption of anti-platelet therapy.
Drug-Eluting Stents ; Humans ; Myocardial Infarction ; Percutaneous Coronary Intervention ; Risk Factors ; Stents ; Thrombocythemia, Essential ; Thrombocytosis ; Thrombosis

PURPOSE: The aim of the present study is to assess the importance of proper treatment timing for dental emergency patients by characterizing current patient care in the emergency room. MATERIALS AND METHODS: A retrospective chart review of 3,211 patients who visited the Chosun University Hospital's dental emergency department (Gwangju, Korea) was conducted from January 1, 2011 to May 31, 2014. Information regarding age, gender, onset date, main causes, and diagnoses were collected and analyzed. The main causes were divided into six categories: assault, household/play, sports, traffic, work, and others. RESULT: Emergency visits were more common for men (69%), and the ratio of males to females was 2.2:1 On average, the major cause was household/play (49.8%), followed by others (18.9%), traffic (16.6%), assault (9.1%), sports (2.9%), and work (2.6%). The most frequent diagnosis on average was dental trauma with 82.4%, followed by infection (10.7%), others (4.7%), and bleeding (2.2%). CONCLUSION: The main reasons for visits to the dental emergency department are dental trauma, dental infection, bleeding, and others. The most frequent reason for dental emergency patients to visit the emergency department was dental trauma (82.4%).
Diagnosis ; Emergencies* ; Emergency Service, Hospital ; Female ; Hemorrhage ; Humans ; Male ; Patient Care ; Retrospective Studies* ; Sports

BACKGROUND AND OBJECTIVES: It is well known that atherosclerosis is characterized by chronic inflammation of an injured intima and the pathological processes are initiated by an accumulation of morphologically distinct, modified forms of low density lipoprotein (LDL)-cholesterol. However, it is not well known whether the level of modified LDL-cholesterol has clinical significance for the patients who underwent percutaneous coronary intervention (PCI). SUBJECTS AND METHODS: Eighty seven patients (mean age: 63.0 +/- 11.1 years, 58 men) who underwent PCI were enrolled. The patients with stable or unstable angina pectoris were classified as group I (n=44, mean age: 62.4 +/- 9.3 years), and the patients with acute myocardial infarction were classified as group II (n=43, mean age: 63.6 +/- 12.7 years). Modified LDL-cholesterol was expressed semiquantitatively by agarose gel electrophoresis with using the charge modification frequency (CMF). The clinical and coronary angiographic data was analyzed. RESULTS: The clinical diagnosis was stable angina in 13 patients, unstable angina in 31 patients, non-ST elevation myocardial infarction in 5 patients and ST elevation myocardial infarction in 38 patients. There were no significant differences of the CMF between two groups (3.0 +/- 7.9 vs. 2.1 +/- 10.9, respectively, p=0.671). The diameter stenosis was severe in the patients with a CMF greater than 10 (84.0 +/- 10.4% vs. 78.6 +/- 13.7%, respectively, p=0.047). The six-month major adverse cardio-vascular events (MACEs) had no relationship with the CMF in group I. However, in group II, the 6-month MACEs developed more frequently in the patients with a CMF higher than 10 {2 (28%) for group ll vs. 2 (5%) for group 1, p=0.031}. The patients with acute myocardial infarction and whose CMF was higher than 10 had in-stent restenosis observed on their follow-up coronary angiography (p=0.003). CONCLUSION: A higher level of modified LDL-cholesterol is associated with severe angiographic findings and a poor prognosis for patients with acute myocardial infarction.
Acute Coronary Syndrome ; Angina, Stable ; Angina, Unstable ; Atherosclerosis ; Constriction, Pathologic ; Coronary Angiography ; Electrophoresis, Agar Gel ; Fees and Charges ; Follow-Up Studies ; Humans ; Inflammation ; Lipoproteins ; Myocardial Infarction ; Pathologic Processes ; Percutaneous Coronary Intervention ; Prognosis

BACKGROUND/AIMS: Behcet's disease (BD) is a systemic disorder associated with a characteristic vasculitis that can involve both veins and arteries of all sizes. Endothelial activation or injury is a characteristic feature of BD. Endothelial dysfunction is widely regarded as being the initial lesion in the development of atherosclerosis. The carotid artery intima-media thickness (IMT) is a widely accepted marker of subclinical atherosclerosis. We aimed to determine the carotid IMT in BD patients with using high-resolution B-mode Doppler ultrasonography. METHODS: We studied 40 patients (24 males, mean age: 39.1+/-8.5 years) who were diagnosed by the international diagnostic criteria of Behcet's disease and 20 healthy controls (13 males, mean age: 40.2+/-5.1 years), and the two groups were matched by age and gender. No subject in either group had a history of atherosclerosis or its complications. The clinical data, including the age of onset, the duration of disease, a history of medication, the activity score and the laboratory data were analyzed. RESULTS: The carotid IMT in the BD group was significantly higher than that in the control group (0.71+/-0.22 mm vs. 0.59+/-0.09 mm, respectively, p<0.01). Cardiac and major vessel involvements were not identified in the BD group. However, minor vascular involvements were documented in 2 patients with deep vein thrombosis, in 4 patients with superficial thrombophlebitis and in 2 patients with pseudoaneurysm. The carotid IMT in the patients with posterior uveitis or retinal vasculitis was higher than that of the patients without these findings (0.85+/-0.21 mm vs. 0.64+/-0.10 mm, respectively, p=0.007), but there was no difference of the IMT according to minor vascular involvement. CONCLUSIONS: Despite that there was no significant cardiovascular involvement in the BD patients, the carotid IMT was significantly higher in the BD patients as compared with the healthy controls.
Adult ; Behcet Syndrome/complications/diagnosis/*pathology ; Carotid Arteries/*pathology/ultrasonography ; Case-Control Studies ; Endothelium, Vascular/pathology ; Female ; Humans ; Male ; Prognosis ; Prospective Studies ; Risk Factors ; Tunica Intima/*pathology/ultrasonography ; Tunica Media/*pathology/ultrasonography ; Ultrasonography, Doppler ; Vasculitis/pathology

BACKGROUND: Obesity is one of the major risk factors for coronary artery disease. However, the long-term clinical effects of obesity after percutaneus coronary intervention (PCI) in Korean patients with acute myocardial infarction (AMI) have not been sufficiently evaluated. METHODS: A total of 309 patients (mean age 60.5+/-11.3 years, M:F=243:66) that underwent PCI with a diagnosis of AMI between February 2002 and June 2006. Thepatients were divided into two groups according to the body mass index (BMI): group I (n=194; BMI <25 kg/m2; mean age 61.7+/-11.1 years, M:F=151:43) and group II (n=115; BMI> or =25 kg/m2, mean age 58.2+/-11.3 years, M:F=92:23). Clinical characteristics and risk factors, and major adverse cardiac events during a six-month follow-up were compared between patients in the two gropus. RESULTS: The mean age of group I patients was older than that of group II patients (61.7+/-11.1 years vs. 58.6+/-11.5 years, p=0.017). The prevalence of hypertension was higher in group II patients (75/194, 38.7% vs.59/115, 51.3%, p=0.033) and hyperlipidemia was more prevalent in group II patients (75/194, 38.7% vs. 60/115, 52.2%, p=0.024). The levels of total cholesterol (184.3+/-39.9 mg/dL vs. 201.4+/-42.6 mg/dL, p=0.001), triglycerides (121.2+/-61.6 mg/dL vs. 147.1+/-96.2 mg/dL, p=0.005), low-density lipoprotein-cholesterol (120.3+/-35.1 mg/dL vs. 134.1+/-37.8 mg/dL, p=0.002) were lower in group I patients than in group II patients. The restenosis rate on a follow-up coronary angiogram was higher in group II patients (18/69, 26.1%) than in group I patients (14/109, 12.8%, p=0.025). CONCLUSIONS: Obesity is associated with hyperlipidemia and hypertension in patients with AMI. The restenosis rate after PCI was higher in obese AMI patients.
Body Mass Index* ; Cholesterol ; Coronary Artery Disease ; Diagnosis ; Follow-Up Studies ; Humans ; Hyperlipidemias ; Hypertension ; Myocardial Infarction* ; Obesity ; Percutaneous Coronary Intervention* ; Prevalence ; Prognosis ; Risk Factors ; Triglycerides

BACKGROUND AND OBJECTIVES: Reactive oxygen species are known to be produced when atrial fibrillation develops. This study was performed to investigate the effects of hydrogen peroxide (H2O2) on the action potential parameters of the mouse atrium. SUBJECTS AND METHODS: Mouse (ICR) atrial fibers were excised and immersed in cold bicarbonate-containing Tyrode's solution. The preparations were then perfused with oxygenated (95% O2, 5% CO2) Tyrode's solution and driven by an electrical stimuli 1 ms in duration at a frequency of 1 Hz. The transmembrane potentials were recorded at 0, 2.5, 5, 10, 20 and 30 minute, and compared between groups I (control), II (H2O2 0.1 mM), III (H2O2 0.5 mM) and IV (H2O2 1 mM). RESULTS: In group I, the maximal diastolic potential (MDP), action potential amplitude (APA), maximal slope at phase 0 depolarization (Vmax), action potential duration until 50% and 90% of repolarization (APD50, APD90) were unchanged with increasing time. In group II, the MDP and APA were unchanged, but the Vmax was decreased, and the APD50 and APD90 prolonged. In group III, the MDP was increased and the Vmax decreased; the APD50 and APD90 were prolonged, but the APA unchanged. In group IV, the MDP was increased, the Vmax and APA decreased And the APD50 and APD90 prolonged. After-depolarization was observed in 40% (8/20) and 54.5% (12/22) of groups III and IV, respectively, and asystole occurred in 18.2% (4/22) of group IV. CONCLUSION: Hydrogen peroxide changed the action potential parameters in both time and dose dependent manner, and also elicited after-depolarization at higher concentrations. These results suggest reactive oxygen species are involved in the electrical remodeling and arrhythmogenesis in atrial myocardium.
Action Potentials* ; Animals ; Atrial Fibrillation ; Atrial Remodeling ; Free Radicals ; Heart Arrest ; Hydrogen Peroxide ; Membrane Potentials ; Mice* ; Myocardium* ; Oxygen* ; Reactive Oxygen Species