No abstract available.
Hepacivirus* ; Hepatitis C* ; Hepatitis*

BACKGROUND: The purpose of this study is to compare the radiological and clinical outcomes after open reduction and plate fixation of midshaft clavicle fractures between patients who achieved successful anatomical reduction and those who had a remaining fracture gap even after open reduction and plate fixation, and were thus treated with additional demineralized bone matrix (DBM). METHODS: This retrospective analysis was conducted on 56 consecutive patients who underwent open reduction and internal fixation using a locking compression plate for acute displaced midshaft clavicle fractures, and who underwent radiographic and clinical outcome evaluations at least 6 months postoperatively. The outcomes between those who achieved perfect anatomical reduction without remnant gap (n=32) and those who had a remaining fracture gap even after open reduction and plate fixation treated with additional DBM (n=24) were evaluated. RESULTS: There were no differences in the use of lag screws or wiring and operation time (all p>0.05) between those with and without remnant gap. No difference in the average radiological union time and clinical outcomes (satisfaction and Constant score) was observed between the two groups (all p>0.05). However, significantly faster union time was observed for AO type A fracture compared with other types (p=0.012), and traffic accident showed association with worse clinical outcomes compared with other causes of injury. CONCLUSIONS: Surgical outcome of midshaft clavicle fracture was more affected by initial fracture type and event, and re-reduction and re-fixation of the fracture to obtain a perfect anatomical reduction spending time appears to be unnecessary if rigid fixation is achieved.
Accidents, Traffic ; Bone Matrix ; Clavicle* ; Fracture Fixation ; Fracture Healing ; Humans ; Retrospective Studies

No abstract available.
Aged* ; Humans ; Hydroxymethylglutaryl-CoA Reductase Inhibitors* ; Hypercholesterolemia*

No abstract available.
Humans ; Moral Development* ; Students, Medical*

BACKGROUND: Because of wide individual variations in response to sedative and the level of sedation desired by different patients, inadequate sedation is frequent during surgery. Patient-controlled sedation is a logical extension of patient-controlled analgesia to find and maintain their own steady-state of sedation by self-administration of sedatives during surgery. The purpose of this study was to evaluate the feasibility of patient-controlled sedation compared with anesthesiologist-controlled sedation during surgical spinal anesthesia. METHODS: Unpremedicated forty adult patients who received spinal anesthesia for lower extremity surgery were randomly allocated into two groups (n=20 for each group). After selection of target state of sedation according to sedation scale, patient-controlled sedation (PCS) group self-administered 0.5 mg (1 ml) intravenous midazolam in increments using a Walkmed PCA infusor and anesthesiologist- controlled sedation (ACS) group administered by the anesthesiologist as the same manner to achieve previously selected sedation state. Sedation score, vital signs, SpO2 were checked 5, 10, 20, 30, 40min after start of drug injection. RESULTS: The sedation scores patient desired were 4.4 +/- 0.8 in PCS group and 4.3 +/- 0.7 in ACS group. These scores were achieved 20min after start of injection in PCS group and 40 min in ACS grou p (p<0.05). Degree of satisfaction was higher in PCS group compared with ACS group (1.5 +/- 0.6 vs 2.1 +/- 0.8, p<0.05). No complications were detected in two groups. CONCLUSIONS: PCS using midazolam was better than ACS in terms of early achievement of sedation state patient desired and degree of satisfaction.
Adult ; Analgesia, Patient-Controlled ; Anesthesia, Spinal ; Humans ; Hypnotics and Sedatives ; Infusion Pumps ; Logic ; Lower Extremity ; Midazolam* ; Passive Cutaneous Anaphylaxis ; Vital Signs

Iris neovascularization was produced in rabbits by hypotony following repeated aspiration of the vitreous. The hypotony was produced after 0.3 ml of vitreous fluid was aspirated using a 25-gauge needle through the pars plana of 10 rabbits. For the histochemical study, horseradish peroxidase(HRP) was injected through the ear lobe vein. After fixation of the iris tissue, the tissue was treated with diaminobenzidine and examined with both light microscopy and transmission electron microscopy. The newly-formed vessel was abundant, particularly on the upper stroma of the iris. The new vessel formation was evident due to the proliferation of endothelial cells, which may have been derived from preexisting iris vessels. The endothelial cells of the newly-formed vessels revealed prominent villous processes into the vascular lumen, formation of the marginal flap, numerous fenestrations in the endothelial junction, and reaction product onto extravascular space by the cytochemical electron microscopy. These results suggest that hypotony in the rabbit produces the disruption of the blood-iris barrier and the balance between angiogenesis-antiangiogenesis modulation.
Animals ; Biological Transport, Active ; Disease Models, Animal ; Horseradish Peroxidase/diagnostic use ; Iris/*blood supply/*ultrastructure ; Iritis/*pathology ; Neovascularization, Pathologic/*pathology ; Rabbits ; Vitreous Body/surgery

This study was undertaken in an attempt to localize fibronectin and collagen type IV to the cultured retinal pigment epithelial cell by means of immunofluorescent staining and immunocytochemrcal method. Immunofluorescent staining and immunocytochemical methcds revealed fibronectin and collagen type IV localized on the extracellular membrane of the cultured retinal pigment epithelial cell. Ultrastructural immunocytochemical technique also revealed fibronectin associated with extracellular tissue. This study demonstrated that fibronectin and collagen type IV are an integral component of the extracellular matrix of the retinal pigment epithelial cell in vitro.
Collagen Type IV ; Epithelial Cells* ; Extracellular Matrix* ; Fibronectins ; Membranes ; Retinaldehyde*

This study was performed to elucidate the cytologic characteristics of pseudomembrane, which was obtained from eight patients with epidemic keratoconjunctivltis. The predominant cells consisted of lymphocytes and degenerated epithelial cells with a few polymorphonuclear leukocytes and fibrin. Electron micrographs revealed the nuclear segregation, vermicellar body, viral microtubules, and intranuclear inclusion body. These findings suggest that the desquamated epithelial cell was infected by adenovirus.
Adenoviridae ; Epithelial Cells ; Fibrin ; Humans ; Intranuclear Inclusion Bodies ; Keratoconjunctivitis* ; Lymphocytes ; Microtubules ; Neutrophils

This study was performed to investigate the sequential changes of the retinal tissue in tissue culture condition. The human sensory retinal tissues were cultured for up to 2 weeks and 4 weeks, respectively. The initial changes showed the separation of the intercellular space and the consequent widening of the intercellular space with prolapse of cytoplasmic processes into the widened intercellular space. The internal limiting membrane was also separated from the inner retina, which led to the prolapse of the cytoplasm of the Muller cell. The growth of the Muller cell was most prominent during the 4-weeks' tissue culture period. These findings suggest that the Muller cell might contribute to the formation of cellular membrane in case of the defect of the internal limiting membrane in several pathologic conditions.
Adult ; Cell Membrane/ultrastructure ; Cells, Cultured ; Humans ; Male ; Middle Aged ; Neuroglia/*ultrastructure ; Retina/*ultrastructure

As modern society becomes increasingly complex, there has been a steady increase in violence, as well as in automobile and industrial accidents. This has resulted in an increased incidence of facial injuries, including mandibular fractures. Many methods have been advocated to achieve reestablishment of normal feature and function. The choice generally depends upon such factors as location of the fractures, displacements, status of the dentition and favorability of the fracture line. Many cases of mandibular fracture are treated by intermaxillay fixation using an arch bar or bite block(acrylic splint)for rapid bone union and minimal displacement. However, there had been some problems, such as discomfort to patients, limitation to eating and weight loss, poor oral hygiene, and temporomandibular joint ankylosis. As a consequence, we have modified the shape of the acrylic splint and method of fixation for circum-mandibular fixation instead of intermaxillary fixation. Acrylic splints are rigid, strong, easily adjusted and repaired, translucent, lightweight and well tolerated by the oral mucosa. The splints are properly secured to each tooth and bind all the teeth together as a single unit. Authors have used modified acrylic splints as tools of circum-mandibular fixation in 12 cases of mandibular symphysis and body fracture from May 1997 to August 1998, achieving the results of very good occlusal relationship, oral hygiene and comfort to patients.
Accidents, Occupational ; Ankylosis ; Automobiles ; Dentition ; Eating ; Facial Injuries ; Humans ; Incidence ; Mandibular Fractures* ; Mouth Mucosa ; Oral Hygiene ; Splints* ; Temporomandibular Joint ; Tooth ; Violence ; Weight Loss