No abstract available.
Ebstein Anomaly*

PURPOSE: The present study was intended to evaluate the effect of soldering techniques with infrared ray and gas torch under different gap distances (0.3 mm and 0.5 mm) on the tensile strength and surface porosity formation in Ni-Cr base metal alloy. MATERIALS AND METHODS: Thirty five dumbbell shaped Ni-Cr alloy specimens were prepared and assigned to 5 groups according to the soldering method and the gap distance. For the soldering methods, gas torch (G group) and infrared ray (IR group) were compared and each group was subdivided by corresponding gap distance (0.3 mm: G3 and IR3, 0.5 mm: G5, IR5). Specimens of the experimental groups were sectioned in the middle with a diamond disk and embedded in solder blocks according to the predetermined distance. As a control group, 7 specimens were prepared without sectioning or soldering. After the soldering procedure, a tensile strength test was performed using universal testing machine at a crosshead speed 1 mm/min. The proportions of porosity on the fractured surface were calculated on the images acquired through the scanning electronic microscope. RESULTS: Every specimen of G3, G5, IR3 and IR5 was fractured on the solder joint area. However, there was no significant difference between the test groups (P > .05). There was a negative correlation between porosity formation and tensile strength in all the specimens in the test groups (P < .05). CONCLUSION: There was no significant difference in ultimate tensile strength of joints and porosity formations between the gas-oxygen torch soldering and infrared ray soldering technique or between the gap distance of 0.3 mm and 0.5 mm.
Alloys ; Collodion ; Diamond ; Electronics ; Electrons ; Infrared Rays ; Joints ; Porosity ; Tensile Strength

This study was designed to evaluate the biological behavior of the dysplastic lesion of the stomach by applying immunohistochemical method for bromodeoxyuridine (BrdUrd). The results obtained were as follows. 1) In most hyperplastic and dysplastic lesions, the proliferative cell zones, loci of BrdUrd-labelled cells, were found in the upper later of the mucosa, whereas they were confined to the neck zone in the normal gastric mucosa. 2) The labelling indices (LIs), percentages of BrdUrd-labelled cells, were 11.0% to 13.6% in the normal gastric mucosa, and were 14.3% to 17.9%, 16.4% to 19.2% and 17.4% to 20.7% in the simple hyperplasia, in the atypical hyperplasia and in the dysplasia, respectively. These findings suggested that proliferative potential in hyperplasia and dysplasia were greater than that in normal gastric mucosa, the higher the grade of dysplasia being, the greater the proliferative potentials.

Recently the incidence of intertrochanteric factures of the femur has been increasing progressively due to prolongation of average life span and increased activity. Most of intertrochanteric fractures of the femur occur in elderly patients with osteoporotic bone change and general weakness. The goal of treatment is early mobilization with immediate weight bearing to prevent the complications such as deep vein thrombosis, pulmonary embolism, pneumonia or atelectasis, and pressure sore. We have tried to assess the outcome and complications of bipolar hip prostehsis for the femoral intertrochanteric fracture in elderly patients. The twenty octogenarian patients received a bipolar hip prosthesis due to femoral intertrochanteric fractures from January 1989 to December 1994 at the Department of Orthopedic Surgery of Chonbuk National University Hospital. The results were as follows: 1. The average age of patients was 83.5 years and underlying problems are hypertension, cerebral vascular accident, pulmonary problem, diabetes mellitus, and osteoarthritis. 2. By Tronzo classification, Type III was the most common (80%) type. 3. Complications were peroneal nerve palsy, intraoperative femoral shaft fracture, postoperative stem tip fracture, dislocation and shortening. 4. Postoperative ambulation was possible at 2 weeks after surgery. 5. In elderly unstable osteoporosis patient, bipolar hemiarthroplasty can be recommended for the first treatment of intertrochanteric fracture.
Aged ; Aged, 80 and over ; Classification ; Diabetes Mellitus ; Dislocations ; Early Ambulation ; Femur ; Hemiarthroplasty ; Hip ; Hip Fractures ; Hip Prosthesis ; Humans ; Hypertension ; Incidence ; Jeollabuk-do ; Orthopedics ; Osteoarthritis ; Osteoporosis ; Paralysis ; Peroneal Nerve ; Pneumonia ; Pressure Ulcer ; Pulmonary Atelectasis ; Pulmonary Embolism ; Venous Thrombosis ; Walking ; Weight-Bearing

BACKGROUND: Cold blood cardioplegic solution has been used to protect myocardium during open heart surgery with the hypothesis stating that it provides more oxygen supply to myocardium compared to crystalloid caridoplegic solution. We repeatedly infused cold blood cardioplegic solution to achieve myocardial protection. We biopsied a small portion of papillary muscle of patients with mitral valve replacement or double valve replacement during aortic cross-clamp time and evaluated the method of myocardial protection through the observation of changes in ultrastructure. We then analysed the relationship between changes in ultrasructure and peak postoperative CK-MB value and SGOT value. MATERIAL AND METHOD: We report observation on changes of myocardial ultrastructure, postoperative CK-MB and SGOT, and electrocardiogram in 31 patients who underwent cardiac operation. There were 11 males and 20 females, and they ranging in age from 28 to 69 years (mean score was 2.08+/-0.560, it was 2.37+/-0.558 at 40 minutes, and it was 2.36+/-0.523 at 70minutes. Mitochondrial score increased significant at 40 minutes. Mean value of postoperative peak CK-MB and SGOT were 37.3+/-17.061IU, 144.5+/-125.5IU respectively. We were not able to find any new Q were in EKG after the operation. There was no significant relationship between myocardium mitochondrial score and mean value of postoperative peak CK-MB and SGOT. CONCLUSION: In conclusion, with this study the cold blood cardioplegic solution was incomplete in preserving ultrastructure of myocardium even with satisfactory results in serum enzyme and EKG evaluation.
Aspartate Aminotransferases ; Cardioplegic Solutions ; Electrocardiography ; Female ; Heart* ; Humans ; Male ; Mitral Valve ; Myocardium ; Oxygen ; Papillary Muscles ; Thoracic Surgery*

No abstract available.
Aneurysm, False* ; Aorta*

No abstract available.
Magnetic Resonance Imaging* ; Prostate* ; Prostatic Neoplasms*

No abstract available.
Hospitals, General* ; Humans ; Inpatients* ; Sleep Initiation and Maintenance Disorders*

BACKGROUND: To investigate the effectiveness of reverse total shoulder arthroplasty (RTSA) in treating irreparable massive rotator cuff tears (RCTs). METHODS: Twenty-nine patients who underwent RTSA for the treatment of irreparable massive RCTs and completed follow-up for at least 1 year were selected. Their mean age was 69.7 years (range, 59-80 years). The mean follow-up was 17.7 months (range, 12-42 months). The shoulder range of motion was measured preoperatively and at final follow-up. The functional result was evaluated using visual analog scale (VAS) for pain, American Shoulder and Elbow Surgeon (ASES) score, and Korean Shoulder Society (KSS) score. Additionally, the shoulders were categorized into two groups depending on prior history of surgery and the clinical outcomes were analyzed between two groups. RESULTS: Mean pain VAS improved, from 6.6+/-1.2 to 2.7+/-0.9 (p=0.001), and the mean functional VAS from 35.7+/-4.2 to 73.3+/-5.4 (p=0.006). The mean ASES score improved from 37.2+/-2.8 to 75.0+/-3.8 (p=0.012). The mean KSS improved from 36.5+/-7.2 to 75.6+/-5.4 (p=0.009), the mean forward elevation from 66.3+/-4.7 to 135.6+/-8.4 (p=0.0001), and the mean abduction from 45.2+/-4.2 to 119.0+/-6.5o (p=0.0001). Internal rotation differed significantly from the first sacral to the third lumbar vertebrae (p=0.036). External rotation did not change significantly (p=0.076). There was also no statistically significant difference between groups (no previous operation versus none). Four complications occurred: one superficial infection, one with anterior dislocation, one acromial fracture, and one clavicle fracture. CONCLUSIONS: RTSA provides reliable pain relief and recovery of shoulder function in patients with massive irreparable RCTs in short-term follow-up.
Arthroplasty* ; Clavicle ; Dislocations ; Elbow ; Follow-Up Studies ; Humans ; Lumbar Vertebrae ; Range of Motion, Articular ; Rotator Cuff* ; Shoulder* ; Visual Analog Scale

No abstract available.
Dermatomycoses* ; Humans