No abstract available.
Free Tissue Flaps* ; Upper Extremity*

Intra-uterine fracture of normal bone is extremely rare. It was reported few cases in the other contries, but it was very rare in Korea. It is difficult to distinguish it from birth fracture and the other fractures or deformities seen at birth. The authors experienced a case of intra-uterine fracture of the femur in the middle third of the shaft, with abundant callus formation in infant without serious injury to the mother.
Bony Callus ; Congenital Abnormalities ; Femur ; Humans ; Infant ; Korea ; Mothers ; Parturition

BACKGROUND: Primary stenting as a direct reperfusion procedure after acute myocardial infarction might reduce recurrent myocardial infarction and target vessel revascularization. However, result of long or multiple stenting in the long or tandem lesions were not known. METHOD: From Jan. 1996 to Dec. 1998, patients with acute myocardial infarction including cardiogenic shock were undergone primary stenting using long or multiple stent. The clinical end points were death, recurrent infarction, subsequent bypass surgery, or repeat angioplasty of the infarct-related vessel. The results were compared with age, sex, lesion, and risk matched standard stenting group. RESULT: Baseline characteristics were similar for the 20 patients who underwent standard length stenting and the 13 patients who underwent long or multiple stenting. Stent diameter was similar in two group (3.4+/-0.3 mm vs. 3.5+/-0.4 mm, p=0.65), but total stent length was longer in long or multiple stenting group (15.5+/-1.8 mm vs. 40.18.4 mm, p=0.01). Average numbers of stent using in multiple stenting were 1.5+/-0.7. Stenting in the infarct-related artery was successful in all patients randomized to stent treatment. At 6 months, the incidence of the primary end point was 25% (5/20) in the standard stent group and 31%(4/13) in the long or multiple stent group (p=0.5). CONCLUSION: Outcomes of long or multiple stenting including mortality, recurrent myocardial infarction and target vessel revascularization was similar to standard stenting. Long or multiple stenting after acute myocardial infarction may possible procedure in some selective cases having long or tandem lesion.
Angioplasty* ; Arteries ; Humans ; Incidence ; Infarction ; Mortality ; Myocardial Infarction ; Reperfusion ; Shock, Cardiogenic ; Stents*

No abstract available.
Balloon Valvuloplasty* ; Pulmonary Valve Stenosis* ; Pulmonary Valve*

Primary tumors of the heart are rare, three quarter of the tumors are benign, and nearly half of the benign heart tumors are myxomas. Cardiac myxoma usually originate in the left atrium about 75 percent, however, only 3 to 4 percent of myxoma are detected in the left ventricle. We report on a 32 years old woman with left ventricular myxoma who presented with shortness of breath, chest tightness, and general weakness. Acute pulmonary embolism and left ventricular myxoma were found on a perfusion lung scan and echocadiogram. A mass located on septal wall of left ventricle was excised en bloc. The patient recovered uneventfully and careful follow up has be performed periodically.
Adult ; Dyspnea ; Female ; Follow-Up Studies ; Heart ; Heart Atria ; Heart Neoplasms ; Heart Ventricles ; Humans ; Lung ; Myxoma* ; Perfusion ; Pulmonary Embolism* ; Thorax

No abstract available.
Borrelia burgdorferi* ; Borrelia* ; Ixodes* ; Korea* ; Lyme Disease* ; Ticks*

No abstract available.
Animals ; Linoleic Acid* ; Macrophages, Peritoneal* ; Mice*

BACKGROUND: Although the superior reperfusion and improved clinical outcome following angioplasty for acute myocardial infarction (AMI) have been well known, 10 to 15% of reinfarction and recurrent ischemia in hospital are main limitation of primary percutaneous transluminal coronary angioplasty (PTCA). This study was undertaken to examine the safety and feasibility of stent-supported primary angioplasty in acute myocardial infarction. METHODS: Between July 1995 and Jun. 1997, 32 patients underwent direct or rescue PTCA, including patients with cardiogenic shock. After PTCA, stenting was attempted in patient with dissection or having more than 30% of residual stenosis. Result: In patient with direct PTCA, angiographic success rate was obtained in 91% (30/32). Stenting was attempted in 15 of 30 patients. These patients had suboptimal results (8 patients), non-occlusive dissection (3 patients) and acute occlusion (2 patient). Thrombolysis in myocardial infarction (TIMI) grade 3 flow was restored in 28 patients (93%). In one patient no-reflow phenomena was observed following stent insertion. Despite intra-aortic balloon pumping, there was one death during the hopitalization due to cardiogenic shock following PTCA. Subacute stent thrombosis developed in two patients. 27 patients (90%) were event-free and clinically improved through out the follow up period (11.5+/-5.2 month). Quantitative angiography showed excellent angiographic result after stenting compared with balloon PTCA (2.4+/-0.6 mm vs. 3.4+/-0.3 mm p<0.01). CONCLUSION: After failure of initial angioplasty, coronary stenting can be a supportive therapeutic strategy. Coronary stenting results in a high degree of angiographic success, a low incidence of subacute thrombosis.
Angiography ; Angioplasty* ; Angioplasty, Balloon* ; Angioplasty, Balloon, Coronary ; Constriction, Pathologic ; Follow-Up Studies ; Humans ; Incidence ; Intra-Aortic Balloon Pumping ; Ischemia ; Myocardial Infarction* ; Reperfusion ; Shock, Cardiogenic ; Stents ; Thrombosis

The purpose of this study was to evaluate the surface roughness of Ni-Cr-Be alloy(Verabond ~, Aalba Dent Inc. USA) according to electrolyte concentration and etching time. Total of 150 metal specimens (12x 10 X 1.5mm) composed of 5 polisded specimens, 5 sandblasted specimens, 140 etched specimens were prepared. Etched groups were divided into 28 groups by the HC1O4 con= centrations(10, 30, 50, 70%) and etching times(15, 30, 60, 120, 180, 240, 300 seconds). The mean surface roughness(Ra) and the etching depth were measured with Optical 3-dimensional surface roughness measuring machine(Accura 1500M, Intek Engineering Co., Korea) and observed under SEM. The results obtaind were as follows 1. Surface roughness(Ra) and etching depth were affected by the order of etching time, electrolyte concentration, and their interaction (NO.05) . 2. Surface roughness(Ra) and etching depth were increased with etching time in 10%, 30% electrolyte concentrations, but they had no significant difference with etching time in 70%(P<0.05). 3. Surface roughness(Ra) and etching depth decreased in the order of 30, 10, 50, 70% electrolyte concentrations from 120 seconds etching time(p<0.05). 4. The remarkable morphologic changes in etched surface were observed along the grain boundaries in 15, 30 seconds of 10%, 30% concentrations and the morphologic changes could be denoted in the grains themselves as well as along the boundaries with the lapse of time. Even though the noticeable morphologic changes also took place in etched surface with 50% concentration, the degree of changes were less than that of changes with 10%, 30%. However, there were little morphologic changes with 70% concentration regardless of etching time. 5. Surface roughness(Ra) of sandblasting group with 50um A1203 had no significant difference with 30%-30 seconds etched group(p<0.05).
Alloys* ; Edible Grain

Myxoma is a relatively rare tumor of mesenchymal origin that can be found in numerous sites throughout the body including heart, skin, and subcutaneous tissue along with various sites in the head and neck. It is presumed to be originated from dental malformation or missing teeth, but occasionally myxoma without dental abnormalities is found giving arguments for its embryogenesis. Myxoma in the head and neck is usually managed by radical operation in order to prevent the possible recurrence. A case of recurrent myxoma of maxilla is described, which was treated with en-bloc removal via lateral rhinotomy incision. The purpose of this article is to present a case of myxoma of maxilla with a review of the literature and is to give a special emphasis on the proper modalities of treatment which minimizes recurrence and functional deficit.
Embryonic Development ; Female ; Head ; Heart ; Maxilla* ; Myxoma* ; Neck ; Pregnancy ; Recurrence ; Skin ; Subcutaneous Tissue ; Tooth