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Biomedical subjects

B Petersen

Publications and source records attributed to B Petersen.

134 records · Page 8Linked to original sources

Percutaneous hepaticoneojejunostomy and choledochocholedochal reanastomosis using metallic stents: technical note.

A new, nonsurgical approach to biliary duct reconstruction in two high-operative risk patients is presented. The first patient with an obstructed hepaticojejunostomy underwent such reconstruction by placement of Wallstent, which remained patent 9 months until death from recurrent tumor. The second patient with an inadvertently ligated common bile duct underwent a combined percutaneous transhepatic-retrograde endoscopic reconstruction with placement of a Gianturco-Rösch (GR) stent. Because of occlusion by granulation tissue 5 months later, a new GR stent covered with a silicone membrane was placed within the initial stent. Nine months after the second GR stent placement there is no evidence of obstruction.

Adult↗

International Interface Standard for Food Databases.

An International Interface Standard for Food Databases is under development to help overcome the technical and semantic barriers to the use of food-related databases. The Interface Standard is a system for efficient storage of all relevant descriptive information about foods. The schema for the Standard consists of ten components--food/food product identification, food names, LANGUAL factors, other food descriptors, other descriptive coding systems, ingredients/recipes, standards, substances, organizations, and data sources. The Interface allows for retrievals of data associated with specific foods from databases by using queries based on any of a wide variety of descriptive terms. The schema of the Interface has been completed; the remaining work is to build the computer software to provide access to, and use of, the schema.

Computers↗

Harmonization of strategies for utilizing available data on a pan-European basis.

Harmonization must proceed for setting the objectives and priorities, for the technical understanding and utilization of data and information, and for the application of the information to regulatory strategies. At the moment there is disharmony along these three lines but there exists great advantage and opportunity in the pan-European situation. There is a wealth of different kinds of data, information tools, models and experience. There is a willingness for open discussion of the sciences, costs and responsibilities. No historical mould inhibits the process. To maximize the opportunities for success, the European Union--government and industry--should collect and use available data for dietary intake assessments then evaluate the utility of the data and models. An independent working group should develop criteria for application of the data and for development of new data. A secure clearing-house should be established to facilitate equitable use of private and public databases.

Diet↗

Audiological results in children with a cochlear implant.

Audiological data collected through June 1984 were analyzed for 126 children with the cochlear implant. Preimplant hearing aid results were compared to cochlear implant results at 6-month follow-up test intervals. Auditory thresholds to warble tones and speech stimuli, and auditory discrimination test scores were significantly better with the cochlear implant at all test intervals than preoperatively with a hearing aid. Electrical measurements were also monitored. Mean thresholds remained consistent over time. Electrical comfort levels increased slightly over time, indicating a widening of the electrical dynamic range. Results have been extremely encouraging. Some trends are beginning to develop, but more long-term data are needed to define the potential benefit of the implant in children.

Adolescent↗

Early discharge with home health care in the coronary artery bypass patient.

Early hospital discharge after coronary artery bypass graft surgery has been the standard of practice throughout the United States. This study compared outcomes, readmissions, and costs for patients discharged early with home health care with those of patients discharged a day or more later without home health care. Discharging open-heart surgery patients on postoperative day 4 with home health care was found to be safe and cost-effective.

Adult↗

Lethal acute gamma radiation accident at Kjeller, Norway. Report of a case.

On September 2, 1982, a 64-year-old man accidently received a heavy dose of gamma radiation in a plant for sterilization by radiation. He developed an acute radiation syndrome. The leukocyte count rapidly diminished to low values, and extensive chromosome injuries could be demonstrated in cultured lymphocytes. He was hospitalized in an isolated room, and received large doses of antibiotics, and transfusions of leukocytes, platelets and blood. He died anuric on the 13th day. From spectroscopic analyses of electron-spin resonance in irradiated material the mean dose in the whole body was estimated to be 22.5 +/- 2 Gy. The course of the illness and the findings at autopsy are briefly described.

Accidents, Occupational↗

Efficacy of a computerized local anesthesia device in pediatric dentistry.

PURPOSE: The purpose of this study was to evaluate the efficacy of a computerized anesthesia delivery system in reducing pain during injections when compared with a traditional delivery system (i.e., syringe). METHODS: Subjects consisted of 57 patients between the ages of 5 and 13 needing operative dentistry using local anesthesia. Patients were randomly assigned to either the computerized or traditional anesthesia delivery system. Inferior alveolar block injections, palatal, and buccal infiltrations were the only injections administered throughout this study. Pain behavior was videotaped and coded throughout the study. Pain perceptions were rated using a 10 point visual analogue rating scale. Subjects were also asked to rate their overall satisfaction and approval of the dentist and the treatment received. RESULTS: Results of multivariate analysis of variance indicated that there were no significant differences between the computerized and the traditional method of administering local anesthesia when comparing pain ratings and pain behavior. Average pain ratings for the computerized method were 4.5 while the average ratings for the traditional method were 3.6. In addition, all subjects reported overall satisfaction with their dental treatment and that they would be willing to return in the future. CONCLUSIONS: A computerized anesthesia injection method was found to be comparable to the traditional method of anesthesia injection.

Adolescent↗