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Biomedical subjects

K E Schrøder

Publications and source records attributed to K E Schrøder.

15 recordsLinked to original sources
PubMed1999

A World Wide Web-service to aid the development of AMBER parameters using analogy to standard parameters.

A World-Wide Web service has been constructed to assist the development of force field parameters extending the AMBER force fields. This service extracts parameters from the standard AMBER force field parameter databases. From a Web-based interface the user can choose between bond, angle and torsional parameters with certain constraints on element and/or atom hybridization. The software constructed for the purpose of finding appropriate parameters will locate standard AMBER force field parameters matching the user specification. For bond and angle parameters a scatter plot of the reference values against force constants is provided. This service has been produced to assist in extraction and evaluation of parameters that may be useful for molecules other than proteins and nucleic acids.

Biochemical Phenomena↗
PubMed1991

[Utilization of the National Hospital 1985-89. How many beds should there be in a new National Hospital?].

The Norwegian Parliament (Stortinget), has approved a proposal for construction of a new national hospital in Oslo. White Paper no. 38 (1987/88) proposes a hospital with 610 beds. The number of inpatient days at the present Rikshospitalet (The National Hospital) has declined by 19.4% during the period 1985 to 1989. In 1989 the use of inpatient services was equivalent to 530 beds with an occupancy rate of 80%. Based on an assumed further reduction in hospital use in the years to come, we estimate the need for beds to be 340 at the new national hospital. This lower number is assumed to cover local hospital functions (54 beds), regional hospital functions (220 beds) and national services (65 beds). The authors assert that the White Paper is based on outdated assumptions. The construction of a 610-bed national hospital involves a health care structure which could obstruct the reorganization of hospital care (more use of outpatient services) elsewhere in Norway. The County Councils responsible for financing hospitals will be forced to fund a hospital use that is motivated essentially by teaching and research rather than by caring for patients.

Bed Occupancy↗
PubMed1981

Differential diagnosis of a mass in the upper lateral neck.

The differential diagnosis and the duration of symptoms are presented for a group of 288 patients encountered over a ten-year period with a mass in the region of the neck behind and below the angle of the mandible. While infections constituted the largest aetiological group (48.3 per cent), 109 cases (37.9 per cent) had some form of neoplasia, with malignancy being found in 48 (16.6 per cent). The duration of symptoms varied widely, only the acute infections having an acceptably short delay prior to hospital admission. The mean symptom duration for all the neoplastic cases was in excess of five months.

Acute Disease↗
PubMed1980

Chronic secretory otitis media.

Of 242 children and teenagers treated surgically for chronic secretory otitis media in 1972, 212 presented for evaluation 5 years later. Although the pure-tone audiometric threshold was 20 dB HL or better in 87.7% of the ears, only 40.6% were judged to be otoscopically normal. The findings at the first myringotomy for insertion of tympanostomy tubes were of no prognostic value for the course of the disease, and the presence of characteristics of middle ear fluid at subsequent myringotomies varied unpredictably. Adenoidectomy performed at an early stage, and in the presence of nasal obstruction, resulted in a significant reduction in the need for re-insertion of tympanostomy tubes.

Acoustic Impedance Tests↗
PubMed1979

Chronic serous otitis media in the adult.

Twelve adult patients with serous otitis media have been seen in a five-year-period. Five of seven patients with nasopharyngeal neoplasm have died, and one case of polyarteritis nodosa has also terminated fatally. The remaining four patients had benign pathology in the nasopharynx, including one case of branchial cyst. A group of patients with chronic nasopharyngitis but without otological involvement is also reviewed.

Adult↗
PubMed1979

Chronic secretory otitis media.

212 of 242 patients (88%) treated for chronic secretory otitis media in 1972 were re-examined 5 years later. A total of 668 otological procedures has been performed, 99 patients being treated only once, while one patient received 12 procedures. The pure tone threshold was 20 dB or less in 88% of the ears in 1977, whilst only 57% had a type A tympanogram. Normal otoscopy was found in 40.5% of the ears, persisting secretory otitis in 11%, atelectasis in 2.8% and chronic suppurative otitis in 2.6%; the remaining 42.9% showed varying degrees of scarring and myringosclerosis.

Adolescent↗
PubMed1978

Spontaneous haematoma in the head and neck.

Three cases of spontaneous haematoma in the head and neck are presented. Whereas one case was associated with lingual haemangiomatosis, no source of bleeding could be demonstrated in either a chronic, spontaneous orbital blood-cyst or an acute retropharyngeal haematoma.

Child↗
PubMedDate not supplied

Influence of adenoid hypertrophy on secretory otitis media.

The prognostic influence of adenoidectomy on the clinical course of chronic secretory otitis media (SOM) is reported after an observation period of five years in 166 children. Adenoidectomy was performed in connection with the first tubulation on the basis of concurrent symptoms of nasal obstruction, and resulted in a significant reduction in the need for repeated insertion of tympanostomy tubes in patients younger than eight years of age. The tubulation rate was also significantly reduced when adenoidectomy was performed in association with the first recurrence of SOM. This effect was, however, absent when the operation was performed at later stages, and both the otoscopic and audiological findings after five years revealed no significant differences between the adenoidectomy and nonadenoidectomy groups. Possible pathogenetic mechanisms leading to the development of SOM in the presence of large adenoids are discussed.

Adenoidectomy↗