BACKGROUND: A low level of high-density lipoprotein-cholesterol (HDL-C) is well known as an important cardiovascular risk factor which is closely associated with physical activity levels. However, there is a very few studies conducted on relationship between physical activity and HDL-C status among Korean adults. METHODS: We selected total 22,294 people aged 19 to 69 years old who had not taken lipid lowering agents from the 2005 Korea National Health and Nutrition Examination Survey (NHANES) data. The population was classified into three groups using the criteria for HDL-C of Adult Treatment Panel III. The relationship between the physical activity and HDL-C was investigated and the amount of physical activity levels of the three HDL-C groups were obtained with analysis of covariance with adjustments for various factors influencing the physical activity levels. RESULTS: After adjusted for various factors influencing HDL-C, physical activity is significantly associated with HDL-C. As physical activity is increased, HDL-C is much higher (P<0.001).The physical activity levels were significantly different among the three HDL-C groups. The amount of physical activity in low HDL-C group was significantly low compared to high HDL-C group (1653.08+/-65.31 MET-min/wk vs. 1916.70+/-102.86 MET-min/wk, P<0.001). CONCLUSIONS: We confirmed that the amount of physical activity level in low HDL-C group was significantly lower compared with that of high HDL-C group in Korean adults.
Adult ; Aged ; Cardiovascular Diseases ; Cholesterol ; Cholesterol, HDL ; Humans ; Korea ; Lipoproteins ; Motor Activity ; Nutrition Surveys ; Risk Factors

We have observed that the companion shadow of the upper rib may be misinterpreted as a small pnemothorax or pleural plaque associated with asbestosis. To observe the radiographic characteristics of the normal companion shadow, we analyzed, on the posteroanterior(PA) chest radiographs, the companion shadow of 50 normal cases. Factors such as occurrence on each rib, the sharpness of the margin, the relative position to the rib, the shape and the thickness were observed. Also, we analyzed the displaced pleura of 4 pneumothorax cases to differentiate their frndings from the findings of normal companion shadows. On 50 normal chest radiographs, 192 compaion shadows were observed on the first to fourth ribs. In 173 of those shadows, the visceral margin of the companion shadow on the second rib simulated pneumothorax more closely than those on any othe rivs due to its apical location and thinness. In six of 50 normal cases, the companion shadow on the first or second rib showed an inw rdly convex lower margin, mimicking pleural plaque. The compaion shadow was suggested on the plain chest radiograph by the following characteristics imultiplicity(47/50), thicker than normal pleura(3/4), persistent on serial filma with the same shape and specific location(4/4).
Asbestosis ; Friends* ; Humans ; Pleura ; Pneumothorax ; Radiography, Thoracic ; Ribs* ; Thinness

OBJECTIVES: To determine the complaint rates of musculoskeletal symptoms and understand the related factors of musculoskeletal symptoms in nurses and radiological technologists wearing a lead apron for radiation protection. METHOD: The study subjects were 192 nurses and radiological technologists who work at the cardiac catheterization room or angioroom in the department of radiology. A self-recording questionnaire was used to investigate the general characteristics, occupational characteristics, characteristics related to wearing a lead apron, and subjective musculoskeletal symptoms designed by the National Institute for Occupational Safety and Health (NIOSH). RESULTS: Complaint rates of musculoskeletal symptoms by NOISH were 51.0% in the upper /lower back, 49.0% in the shoulder, and 47.9% in the leg/knee/ankle. From multiple logistic regression analysis, musculoskeletal symptoms of the shoulder were influenced by two-piece type apron and long time wearing an apron, symptoms of upper/lower back by long time wearing an apron, sex, higher average working hours per a day and short resting time, symptoms of leg/knee/ankle by long time wearing an apron, working career at the present department (cardiac catheterization room or angioroom) and short resting time. CONCLUSION: The complaint rates of the musculoskeletal symptoms were affected by the characteristics of wearing a lead apron for radiation protection such as wearing time and apron type. Therefore, it is suggested that the workers who are wearing an apron need the proper wearingtime and resting time, and suitable apron type and size for the body.
Cardiac Catheterization ; Cardiac Catheters ; Catheterization ; Catheters ; Logistic Models ; National Institute for Occupational Safety and Health (U.S.) ; Questionnaires ; Radiation Protection* ; Shoulder

BACKGROUND: The present study was aimed (1) to assess the effects of nitric oxide (NO) synthesis inhibitor on regional myocardial function and systemic and pulmonary hemodynamics; (2) to determine whether the blockade of the cyclo-oxygenase (COX) pathway modifies these effects on the variables, and (3) to investigate the mechanism of cardiac depression following NO synthesis inhibition in an open-chest canine model. METHODS: Twenty-five dogs of either sex were acutely instrumented under 1.6% ethrane anesthesia to measure aortic, pulmonary arterial and left ventricular pressure, pulmonary (cardiac output) and left circumflex coronary flow, and subendocardial segment length. NG-nitro-L-arginine methyl ester (L- NAME) at doses of 0.3, 1.0, 3.0, or 10.0 mg/kg i.v. was administered alone (control dogs, n = 10) or in the presence of COX inhibitor, indomethacin (10 mg/kg i.v., n = 10). Seven dogs (n = 7) received phenylephrine at doses of 0.1, 0.3, 1.0, or 3.0 microgram/kg/min i.v. to compare its hemodynamic effects with those of L-NAME. The preload recruitable stroke work slope (Mw) and percent systolic shortening (%SS) as an index of regional myocardial contractility, and the maximum segment lengthening rate (dL/dt max) and percent post-systolic shortening (%PSS) as an index of regional diastolic function, were evaluated. RESULTS: L-NAME dose-dependantly attenuated both regional systolic (Mw and %SS) and diastolic functions (dL/dt max and %PSS), whereas it caused an increase of coronary flow. L-NAME dose- dependently increased systemic blood pressure and vascular resistance as well as pulmonary arterial pressure and vascular resistance. L-NAME also reduced cardiac and stroke volume indices. Pretreatment with indomethacin did not affect the regional myocardial and systemic hemodynamic responses to L-NAME, but did blunt the coronary flow and pulmonary pressure responses. The magnitude of decreases in cardiac and stroke volume indices and Mw was greater with L-NAME than with phenylephrine (P <0.05), despite the comparable blood pressure increases. CONCLUSIONS:These results suggest (1) that NO plays a significant role in cardiac function as well as in systemic and pulmonary but not coronary, vasomotor activities, and (2) that COX products are involved in pulmonary hemodynamic responses to NO synthesis inhibition. It is also suggested that the decline in cardiac output following the NO synthesis inhibition results from a direct myocardial depressant effect of the drug.
Anesthesia ; Animals ; Arterial Pressure ; Blood Pressure ; Cardiac Output ; Depression ; Dogs* ; Enflurane ; Hemodynamics* ; Indomethacin ; NG-Nitroarginine Methyl Ester ; Nitric Oxide* ; Phenylephrine ; Prostaglandin-Endoperoxide Synthases ; Stroke ; Stroke Volume ; Vascular Resistance ; Ventricular Pressure

We report a case of mediastinal lymphangioma associated with Gorham's disease in a 38-year-old man who had suffered recurrent clavicular fractures during a seven-year period. Mediastinal widening associated with osteolysis of the clavicles and the sternal manubrium was revealed by chest radiography, while computed tomography demonstrated a cystic anterior mediastinal mass infiltrating mediastinal fat and associated with osseous destruction of the clavicles and manubrium. Chylothorax recurred during the course of the disease.
Adult ; Case Report ; Chylothorax/*complications ; Human ; Lymphangioma/*complications/radiography ; Male ; Mediastinal Neoplasms/*complications/radiography ; Osteolysis, Essential/*complications/pathology/radiography ; Thoracic Vertebrae/*pathology ; Tomography, X-Ray Computed

BACKGROUND: Antioxidants vitamin C and vitamin E may protect against the toxic effect of oxygen free radicals that are preferentially produced after exposures to hyperbaric oxygen (HBO). This study investigated the effect of vitamin C and vitamin E on serum nitric oxide (NO) concentration and intercellular adhesion molecule-1 (ICAM-1) expression on lung after HBO exposure. METHODS: Male Sprague-Dawley rats weighing 200 to 250 g were exposed to HBO at 3 ATA of 100% O2 for 3 hours. The experimental groups were given vitamin C (125 mg/day per rat) and/or vitamin E (50 mg/day per rat) orally, from 5 days prior to the HBO exposure to the day of sacrifice. Serum NO concentrations were determined by measuring NO end product nitrite by non-enzymatic Griess assay. Expression of ICAM-1 on lung was observed by immunohistochemical analysis. RESULTS: The serum nitrite levels were significantly increased after HBO exposure and were higher at 24 hours after HBO exposure than at 0 h (P<0.05). The expression of ICAM-1 was weak immediately after HBO exposure and enhanced at 24 hours. There were no pronounced suppressive effects of vitamins on serum NO production and ICAM-1 expression induced by the 3 hours HBO exposure. CONCLUSION: The 3 hours HBO exposure induces the serum NO production and ICAM-1 expression on lung. The short-term supplementation of vitamin C or/and E do not suppress the NO production and ICAM-1 expression on lung.
Animals ; Antioxidants ; Ascorbic Acid ; Free Radicals ; Humans ; Hyperbaric Oxygenation ; Intercellular Adhesion Molecule-1 ; Lung ; Male ; Nitric Oxide ; Oxygen* ; Rats* ; Rats, Sprague-Dawley ; Vitamin E ; Vitamins*

PURPOSE: We aimed to evaluate the influence of family environment, parenting behavior, and psychological characteristics on metabolic control in children with type 1 diabetes mellitus (DM). METHODS: We performed a statistical survey among Korean children (adolescents; age, 11-17 years) undergoing treatment for type 1 DM for more than a year and the parents of these children. We obtained the glycosylated hemoglobin (HbA1c) levels; children's depression inventory (CDI) scores; family affection, partnership, growth, adaptation, resolve (APGAR) scores; parenting behavior inventory (PBI) scores; and scores of the Korean version of family environment scale (FES-K) for these families. The results of the survey were collected and analyzed using statistical methods. RESULTS: We found a statistically significant evidence of a positive relationship between HbA1c levels and depressive symptoms (r=0.43, P=0.001). However, there was no relationship between HbA1c levels and family APGAR scores. FES-cohesion scale (beta=-0.422, P=0.005), achievement orientation scale (beta=-0.323, P=0.013), and control scale (beta=0.356, P=0.009)-were significant predictors of HbA1c levels. In the family APGAR index, low CDI score (P=0.001) were indicative of a highly functional family. Furthermore, the family APGAR scale showed a statistically significant association with the reasoning and affection subscales of the PBI scale and inverse association with the inconsistency subscale of the PBI scale. Multiple-regression analysis of the data revealed that the monitoring (beta=-0.325, P=0.045) and reasoning (beta=-0.507, P=0.011) variables of the paternal and maternal PBI scale, respectively, were significant predictors of a child's depressive symptoms. CONCLUSION: Improvements in family environment and parenting behavior may help improve metabolic control and reduce depressive symptoms in children with type 1 DM.
Achievement ; Child ; Depression ; Diabetes Mellitus, Type 1 ; Family Relations ; Hemoglobin A, Glycosylated ; Humans ; Orientation ; Parenting ; Parents ; Social Environment

PURPOSE:The cone-shaped epiphyses mid-5 (CSE-5) and brachymesophalagia-5 (BMP-5) are common osseous anomalies. Those are thought to be normal variants. We evaluated the frequency of CSE-5 and BMP-5 and the influence of them on adult height in Korean children with normal short stature. METHODS:We retrospectively reviewed medical records of 322 normal short stature children. Lengths of the fourth (MP-4) and fifth middle phalanx (MP-5) and widths of MP-5 of all children were measured. Two indicies for BMP-5 were used. Index 1 was based upon the ratio of the width to the length of the MP-5. Index 2 was based upon the ratio of the lengths of MP-5 to MP-4. CSE-5 was assessed by visual inspection only. We assessed several clinical parameters as follows; advanced skeletal maturation, z-scores of height, target height (THz) and predicted adult height (PAHz) according to CSE-5 and/or BMP-5. Results:Of the 322 children, 23.6% had BMP-5 (male 19.5%, female 27.4%), 23.6% had CSE-5 (male 13.0%, female 33.3%). The children with CSE-5 and/or BMP-5 were more advanced skeletal maturation than normal fifth finger (0.07+/-1.09 yrs vs -0.23+/-1.34 yrs, P=0.049), lower PAHz (-1.13+/-1.09 vs -0.71+/-1.28, P=0.008), lower PAHz- THz (-0.53+/-1.07 vs -0.14+/-1.30, P=0.013). In male subjects, the PAHz had weak correlation with index 1 (r=-0.26, P=0.001) and index 2 (r=0.27, P=0.001). CONCLUSION:This study suggests that BMP-5 and CSE-5 in Korean children with short stature are one contributable factor for adult height.
Adult ; Body Height ; Bone Development ; Bone Morphogenetic Protein 5 ; Child ; Epiphyses ; Female ; Finger Phalanges ; Fingers ; Humans ; Male ; Medical Records ; Retrospective Studies

Anatomical shape of the mandibular ramus, which includes the area from the rear of the mandibular second molar to the mandibular posterior border and from the mandibular sigmoid notch to the inferior mandibular border, must be carefully considered to perform orthognathic surgery. The locations of the lingula and mandibular foramen in medial side of mandibular ramus are one of the most important factors to decide the location of the horizontal medial osteotomy in sagittal split ramus osteotomy and to select the line of vertical osteotomy in intraoral vertical ramus osteotomy. Sixty-five different Korean human dry mandibles were surveyed. All mandible have permanent dentition including complete eruption of the mandibular second molar. The locations of the lingula and mandibular foramen in medial side of the ramus were identified and following results were obtained. Anterior ramal horizontal distance from lingula was 16.13+/-3.53mm(range:8.6~24.3mm), anterior ramal horizontal distance from mandibular foramen was 23.91+/-4.79mm(range: 14.1~39.7mm), horizontal width of mandibular foramen was 2.79+/-0.95mm(range: 1.5 ~6.1mm), height of lingula was 10.51+/-3.84mm(range: 3.1~22.4mm), vertical distance from sigmoid notch to lingula was 19.82+/-5.11mm(range: 9.1~35.3mm). From this study, the result could be used to select the location of osteotomy lines and to decide amount of periosteal elevation to avoid injury of neurovascular bundle, and to accomplish the appropriate split in Korean patients in mandibular orthognathic surgery.
Colon, Sigmoid ; Dentition, Permanent ; Humans ; Mandible ; Molar ; Orthognathic Surgery* ; Osteotomy ; Osteotomy, Sagittal Split Ramus

BACKGROUND AND PURPOSE: Benign paroxysmal positional vertigo (BPPV) is the most common form of vertigo. Although the repositioning maneuver dramatically improves the vertigo, some patients complain of residual dizziness. We evaluated the incidence and characteristics of persistent dizziness after successful particle repositioning and the clinical factors associated with the residual dizziness. METHODS: We performed a prospective investigation in 49 consecutive patients with confirmed BPPV. The patients were treated with a repositioning maneuver appropriate for the type of BPPV. Success was defined by the resolution of nystagmus and positional vertigo. All patients were followed up until complete resolution of all dizziness, for a maximum of 3 months. We collected data on the characteristics and duration of any residual dizziness and analyzed the clinical factors associated with the residual dizziness. RESULTS: Of the 49 patients, 11 were men and 38 were women aged 60.4+/-13.0 years (mean +/-SD), and 30 (61%) of them complained of residual dizziness after successful repositioning treatment. There were two types of residual dizziness: continuous lightheadedness and short-lasting unsteadiness occurring during head movement, standing, or walking. The dizziness lasted for 16.4+/-17.6 days (range=2-80 days, median=10 days). A longer duration of BPPV before treatment was significantly associated with residual dizziness (p=0.04). CONCLUSIONS: Residual dizziness after successful repositioning was observed in two-thirds of the patients with BPPV and disappeared within 3 months without specific treatment in all cases. The results indicate that early successful repositioning can reduce the incidence of residual dizziness.
Aged ; Dizziness ; Female ; Head Movements ; Humans ; Incidence ; Male ; Prospective Studies ; Vertigo ; Walking