OBJECTIVES: Posttraumatic stress disorder(PTSD) has been primarily associated with emotional problems. Recently, however, the impact of PTSD on cognitive processes has interested a growing number of researchers. The current study is aimed at investigating the cognitive aspects of PTSD at both behavioral and neurological levels. METHODS: We recruited individuals with PTSD who survived the Daegu subway explosion in 2003 as well as non-PTSD individuals as a control group. To evaluate the inhibitory processes and the neural mechanisms, we had these individuals perform the negative priming task simultaneously with functional MRI scanning. RESULTS: Behaviorally, the negative priming effect was intact in the control group but was not evident in the PTSD group. In the imaging results, only the PTSD group showed the negative priming effect (i.e., increased activation of the negative priming condition as opposed to the neutral condition) in the dorsolateral prefrontal cortex, anterior cingulate cortex, and inferior temporal gyrus. The PTSD group also showed increased activity for the positive priming condition as opposed to the neutral condition in the claustrum. These results confirm and extend the previous findings that the integrity of the ACC is compromised in the trauma survivors due to disrupted white matter tract. CONCLUSIONS: The current results suggest that deteriorated performance of the PTSD group may be due to the functional problem as well as the structural abnormalities.
Basal Ganglia ; European Continental Ancestry Group ; Explosions ; Gyrus Cinguli ; Humans ; Magnetic Resonance Imaging ; Magnetic Resonance Spectroscopy ; Magnetics ; Magnets ; Prefrontal Cortex ; Railroads ; Stress Disorders, Post-Traumatic ; Survivors

No abstract available.
Autopsy* ; Enzyme-Linked Immunosorbent Assay*

BACKGROUND AND OBJECTIVES: Movement of mitral valve during diastole and blood flow velocity through the valve can be accurately measured using M-mode and pulsed wave Doppler technique, respectively. However, the relationship between mechanical excursion and flow phenomenon at the same cardiac cycle has not been seriously investigated. METHOD: The subjects of this study included twenty cases with normal mitral flow pattern in Doppler echocardiography (Group I, mean age:44+/-20.8years, mean ejection fraction (EF):52+/-20.9%), twenty three cases with relaxation abnormality (Group II, mean age:59+/-11.4years, mean EF:43+/-18.2%) and seventeen cases with restrictive physiology (Group III, mean age: 47+/-15.9years, mean EF: 24+/-11.0%). We measured excursion of mitral leaflets at early (DE) and late (DA) diastole, area of mitral valvular opening using two dimensional calibration on M mode images, and transmitral inflow velocity (E (early ventricular filling)-, A (atrial contraction)-velocity), TVI (time velocity integral) on Doppler echocardiography. RESULTS: DE-excursions (mm) in group I, II, III were 16.8+/-4.7, 14.2+/-3.5, 15.3+/-4.1, DA-excursions (mm) were 9.8+/-3.2, 10.7+/-3.0, 8.3+/-2.7, E-areas (cm2) were 2.8+/-1.3, 2.6+/-0.8, 2.5+/-1.0, A-areas (cm2) were 1.7+/-0.8, 1.7+/-0.7, 2.0+/-0.6, respectively. In E-, A-velocity, deceleration time, E-TVI and A-TVI, there were significant differences among three groups. However, in DE-, DA-excursion, E-, A-area, there were no significant differences among three groups. Between DE excursion and E velocity, DA excursion and A velocity, and total opening area and total TVI in total subjects, significant correlations were absent. CONCLUSION: The mitral excursions and mitral opening areas on M mode images did not show any significant correlations with the mitral inflow velocities and TVI by pulsed Doppler, which suggests that the excursion of mitral leaflets is independent of transmitral inflow.
Blood Flow Velocity ; Calibration ; Deceleration ; Diastole ; Echocardiography* ; Echocardiography, Doppler ; Mitral Valve* ; Physiology ; Relaxation

No abstract available.
Coxiella burnetii* ; Coxiella* ; Korea* ; Milk*

Pulmonary alveolar proteinosis is a rare disease, which hallmark is a dense accumulation of PAS positive phospholipid material within alveolar sac. Pulmonary alveolar proteinosis is classified as primary form of unknown etiology and secondary form associated with other diseases. We report a case of secondary pulmonary alveolar proteinosis associated with acute erythroleukemia. A C year old male patient complained of nonproductive cough and general weakness, and presented fine inspiratory crackles at both lower lung field. Chest radiographs and high resolution CT scans showd a lobular pattern of ground-grass opacity with interlobular septal thickening in the center field of the both lungs, Bone marrow aspiration and biopsy revealed acute erythroleukemia. Open lung biopsy revealed PAS positive eosinophilic granular material filled in alveoli. He was treated with TAD chemotherapy, but died from multiorgan failure with pneumonia 22days after chemotherapy.
Biopsy ; Bone Marrow ; Cough ; Drug Therapy ; Eosinophils ; Humans ; Leukemia, Erythroblastic, Acute* ; Lung ; Male ; Pneumonia ; Pulmonary Alveolar Proteinosis* ; Radiography, Thoracic ; Rare Diseases ; Respiratory Sounds ; Tomography, X-Ray Computed

BACKGROUND AND OBJECTIVES: The GFX stent is a flexible, balloon-expansible stent made of sinusoidal element of stainless steel. The adjunct high-pressure balloon dilatations after stenting were usually recommended in routine stenting procedure. The aim of this study was 1) to evaluate the immediate and long-term clinical and angiographic outcomes and 2) to investigate the necessity of high-pressure balloon during GFX stenting. MATERIAL AND METHODS: One hundred seventy two consecutive patients underwent single 12 or 18 mm GFX stent implantation in 188 native coronary lesions. Two types of stenting technique were used: 1) stent size of a final stent-to-artery ratio of 1:1 (inflation pressure > 10 atm, usually 12-14 atm: high pressure group) and 2) stent size of 0.5 mm bigger than reference vessel (inflation pressure 10 atm, usually 9 atm: low pressure group). The adjunct high-pressure balloon dilatations were done only in cases of suboptimal results. RESULTS: The adjunct high-pressure balloon dilatation were required under angiographic guidance in 11 of 83 lesions (13%) in high pressure group and 7 of 105 lesions (7%) in low pressure group (p=0.203). Procedural success rate was 100%. There were no significant differences of in-hospital and long-term clinical events between 2 group. The overall angiographic restenosis rate was 17.7%: 18.4% in high pressure group and 17.1% in low pressure group (p=0.991). CONCLUSION: GFX stent is a safe and effective device with high procedural success rate and favorable late clinical outcome for treatment of native coronary artery disease. Further randomized trials may be needed to compare stenting techniques in GFX stent implantations.
Angioplasty ; Coronary Artery Disease ; Dilatation* ; Humans ; Stainless Steel ; Stents*

Emphysematous cholecystitis is an uncommon form of acute cholecystitis characterized by the presence of gas within the wall, lumen of the gall bladder or biliary ducts. Clinically it is very similar to ordinary farm. But since the risk of perforation is five times that expected from ordinary cholecystitis, early diagnosis and appropriate surgical treatment are important. We could diagnose these cases by the simple abdomen, abdominal ultrasound and abdominal CT by the presence of air in the lumen and the wall of the gall bladder. Percutaneous trans hepatic gall bladder drainage (PTGBD) for decompression was used because poor general condition of patients and later, we could successfully perform the cholecystectomy without any complication. We presented two cases of emphysematous cholecystitis with review of the relevant literature on the subject.
Abdomen ; Cholecystectomy ; Cholecystitis ; Cholecystitis, Acute ; Decompression ; Drainage ; Early Diagnosis ; Emphysematous Cholecystitis* ; Humans ; Tomography, X-Ray Computed ; Ultrasonography ; Urinary Bladder

BACKGROUND: The adequate intravascular ultrasound (IVUS) criteria for stent optimization have not been determined in long coronary stenting. We evaluated the predictors of angiographic restenosis and compared that according to stent lumen cross-sectional area (CSA) and stent length between short (stent length < 20 mm) and long (> or =20 mm) coronary stenting. METHODS: IVUS-guided coronary stenting was successfully performed in 285 consecutive patients with 304 native coronary lesions. Six-month follow-up angiogram was performed in 236 patients (82.8%) with 246 lesions (80.9%). Results were evaluated using conventional (clinical, angiographic, and IVUS) methodology. RESULTS: The overall angiographic restenosis rate was 22.8% (56/246)(short stent 17.6% vs long stent 32.2%, p=0.009). Using multivariate logistic regression analysis, the independent predictors of angiographic restenosis were the IVUS stent lumen CSA (odd ratio=1.51, 95% CI 1.18-1.92, p=0.001) and stent length (odd ratio=0.95, 95% CI 0.91-1.00, p=0.039). The angiographic restenosis rate was 54.8% in stent lumen CSA & 5.0 mm2 (short stent 37.5% vs long stent 73.3%, p=0.049), 27.4% between 5.0 and 7.0 mm2 (short stent 24.1% vs long stent 31.7%, p=0.409), 10.5% between 7.0 and 9.0 mm2 (short stent 10.0% vs long stent 12.5%, p=0.772), and 11.4% in stent lumen CSA > or =9.0 mm2 (short stent 10.4% vs long stent 13.3%, p=0.767)(p=0.001). CONCLUSIONS: Compared with short coronary stenting, long coronary stenting is effective treatment modality to cover long lesions with comparable long-term clinical outcomes in cases of stent lumen CSA > or =7.0 mm2. Regardless of the stent length, the most important factor determining the angiographic restenosis was the IVUS stent lumen CSA in relatively large coronary artery lesions.
Coronary Artery Disease ; Coronary Vessels* ; Follow-Up Studies ; Humans ; Logistic Models ; Stents* ; Ultrasonography*

BACKGROUND: The chronic stent recoil of Palmaz-Schatz stent was minimal. However, the chronic stent recoil of other types of stents has not been determined. We evaluated the chronic stent recoil of different design of stents. METHODS: Serial (after stent implantation and follow-up) intravascular ultrasound images using automatic transducer pullback devices were obtained in 70 native coronary artery lesions: slotted-tube design of Palmaz-Schatz stent 30 and NIR 10, sinusoidal ring design of GFX 20, and coil design of CrossFlex 10. Measurements of stent cross-sectional area (CSA) (4 image slices in Palmaz-Schatz stent and 7 image slices in GFX, NIR and CrossFlex) using computerized planimetry were performed. Stent CSA post-stenting and follow-up was compared to evaluate the chronic stent recoil of different designs of stent. The chronic stent recoil (%) was defined as (post-intervention-follow-up) stent CSAx100/post-intervention stent CSA. RESULTS: The changes of stent CSA between post-intervention and follow-up period were minimal in NIR stent, Palmaz-Schatz and GFX. However, there was significant reduction of stent CSA in CrossFlex stent. Compared with other types of stents, the changes of stent CSA were significantly larger in CrossFlex stent (p=0.001). The chronic stent recoil was significantly larger in CrossFlex stent than in other types of stents (4.0+/-6.0% vs 0.7+/-5.8% in GFX stent, 0.4+/-5.0% in Palmaz-Schatz and 0.3+/-3.0% in NIR, p=0.001, respectively). There were no significant differences of chronic stent recoil among GFX, NIR and Palmaz-Schatz stent. CONCLUSIONS: The chronic stent recoil was minimal in slotted-tube and sinusoidal ring designs of stent. However, there was significant chronic stent recoil in coil design of stent.
Coronary Artery Disease ; Coronary Vessels ; Follow-Up Studies ; Stents* ; Transducers ; Ultrasonography*

OBJECTIVE: To identify the clinical and sonographic parameters which predict the likelihood of successful labor induction in preterm women. METHODS: This prospective observational study enrolled 103 consecutive preterm women (<37 weeks gestation) with singleton gestations scheduled for induction of labor. Transvaginal ultrasound for measurement of the cervical length was performed and the Bishop score was determined by digital examination. The parameters studied were gestational age at induction, parity, maternal age, Bishop score, sonographic cervical length, and current body mass index (BMI). Univariate and multivariate statistical methods were used for data analysis. RESULTS: Successful induction of labor occurred in 45 (44%) of women. Multiple logistic regression analysis identified parity, maternal BMI, and gestational age at induction as the independent predictors of successful labor induction in preterm women, although gestational age did not reach statistical significance (P=0.056). However, maternal age, sonographic cervical length, and Bishop score did not provide independent contribution to success of induction. CONCLUSION: In preterm women undergoing induction of labor parity, maternal BMI, and gestational age at induction were independent parameters in predicting successful induction of labor. However, sonographic cervical length and Bishop score had poor predictive values for success of labor induction.
Body Mass Index ; Female ; Gestational Age ; Humans ; Lipids ; Logistic Models ; Maternal Age ; Parity ; Prospective Studies ; Quaternary Ammonium Compounds ; Statistics as Topic