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Biomedical subjects

Y Kurihara

Publications and source records attributed to Y Kurihara.

261 records · Page 15Linked to original sources
PubMedDate not supplied

Efficacy and complications of the Gianturco-Z tracheobronchial stent for malignant airway stenosis.

PURPOSE: To describe our experience using the Gianturco Z-stent (G-Z stent) for the management of malignant tracheobronchial stenosis, with special reference to complications. METHODS: Thirty-six stents were used in 22 patients with 28 lesions. Thirteen patients were grade 5 according to the Hugh-Jones classification. The technical success rates, follow-up results, and complications were reviewed on the basis of the patients' charts and radiographs. RESULTS: All stents were successfully placed in the ideal position without procedure-related complications. After the procedure, respiratory status improved in 95% (21/22) of patients, and performance status improved in 77% (17/22). Mean survival after stent placement was 15 weeks. Four patients suffered from increased thick secretions requiring multiple suctioning and aspiration by bronchoscopy. One of these patients died from asphyxiation 2 weeks after placement. Stent disruption and/or migration was observed in six patients. Of these six, four experienced life-threatening hemoptysis; all four had received aggressive anticancer treatment. CONCLUSION: G-Z stents are useful for palliation of malignant tracheobronchial obstruction. However, complications of stent strut fracture and migration give cause for concern.

Aged↗
PubMedDate not supplied

Fast image accessing based on an analysis of the picture archiving and communications system in Kochi Medical School.

A large-scale picture archiving and communication system was developed by Kochi Medical School. Using JPEG to achieve 90% compression, this system was capable of storing several years worth of CT and MR examination records and eliminated the bottleneck in conventional systems caused by slow data access in the filing system. Under the new system, access of image files from client PCs was checked for bottlenecks. The image file retrieval from the image database on the server was found to require the longest time. Two methods were considered to eliminate this bottleneck. One was a multiimages filing into a file. Another was an image transmission with multiparallel transmission sessions, which is proposed in this article. By adopting the latter method, the system can transmit 50 CT images from the image database server to a client PC in about 10 s.

Humans↗
PubMedDate not supplied

Pulmonary fat embolism syndrome: CT findings in six patients.

PURPOSE: Our purpose is to describe the CT findings in pulmonary fat embolism syndrome (FES). METHOD: Chest radiographs and CT scans of six patients with pulmonary FES were reviewed. Initial and follow-up CT findings were noted, and the extent of CT abnormalities was correlated with partial pressure of arterial oxygen (PaO2). RESULTS: Focal areas of consolidation or ground-glass opacity and nodules were seen in all patients, predominantly in the upper lobes of the lungs. Association between these opacities and pulmonary vessels was indicated in three patients. In the lower lobes of all patients, gravity-dependent opacities predominated. Diffuse ground-glass opacity was noted in five patients. Follow-up CT scans showed rapid improvement in three patients, but the gravity-dependent opacity progressed. The extent of CT abnormalities correlated positively with PaO2 (r = 0.8, p < 0.05). CONCLUSION: CT findings reflect the pathophysiology of this syndrome, which differs from that of simple capillary permeability pulmonary edema.

Adolescent↗
PubMedDate not supplied

The ribs: anatomic and radiologic considerations.

The ribs are essential structures of the osseous thorax and provide information that aids in the interpretation of radiologic images. Techniques for making precise identification of the ribs are useful in detection of rib lesions and localization of lung lesions. The big rib sign and the vertical displacement sign can be used to differentiate the right and left ribs on lateral chest radiographs. The clavicle, the xiphoid process, and the sternal angle may be used as anatomic landmarks for rib counting on computed tomographic scans. For rib counting on lateral chest radiographs, the sternal angle or the 12th rib may be used. Anatomic rib variants include developmental deformities, cervical rib, and short rib and may mimic true rib diseases. Detection of thoracic deformities such as funnel chest (pectus excavatum) and barrel-shaped thorax requires an awareness of the strong correlation between the transverse appearance of the thorax and costal shape. Shadows around the rib cage (eg, rib companion shadows, sharp lines along the lower margin of the ribs, rib overlying shadows) may mimic pleural and extrapleural disease on frontal chest radiographs. It is imperative that the radiologist be familiar with normal rib anatomy, normal rib variants, and the radiologic appearance of the ribs to prevent misdiagnosis.

Humans↗
PubMedDate not supplied

Full implementation of a computerized nursing records system at Kochi Medical School Hospital in Japan.

A project to fully implement a novel computerized nursing records system resulted in the standardization of nursing records, reduced the administrative workload for staff, enabled medical staff to know a patient's status at any given time, and improved the quality of nursing care provided to patients. The development process of the computerized nursing records system involved three main steps: 1) the establishment of a new nursing assessment form and introduction of nursing diagnosis into routine work, 2) computerized system design and construction, and 3) the usability check of the computerized nursing records system in a clinical setting for 1 year. The successful development of the computerized nursing records system was based on the following points: 1) the assessment form for nursing diagnosis was improved and the nursing diagnosis was introduced before the computerized system was designed and constructed; 2) full, rather than partial, implementation of the computerized system occurred; 3) existing knowledge of nursing assessments and standard care planning were fully used; 4) registered data were optimally reused upon summarization and readmission to reduce the nurses' workload; and 5) portable computers were introduced to enable simple and quick recording of bedside findings. The routine use of the computerized nursing records system was started in April 2000. More comprehensive investigations during the next 2 to 3 years are necessary to determine how the contents of nursing records can be improved and how much the computerized nursing records system affects the quality of nursing.

Hospital Information Systems↗