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H Bay-Nielsen

Publications and source records attributed to H Bay-Nielsen.

At least 19 recordsLinked to original sources
PubMed1992

Classification of accidents in the Arctic. A suggestion for adaptation of the Nordic classification for accident monitoring.

Since 1980 the Nordic Medico-Statistical Committee (NOMESCO) has supported the development of the Classification for Accident Monitoring. The objective of the Classification is to provide the foundation for accident prevention. In agreement with the purpose of NOMESCO to establish comparable medical statistics in the Nordic countries, it is considered how the Nordic Classification might be adapted to conditions in Arctic areas, in order also to facilitate accident prevention in these areas. The Classification is multiaxial and describes place of occurrence, injury mechanism, activity (of victim), products involved in accidents, and information of special relevance to traffic accidents and occupational accidents. The hierarchical build-up of the coding system allows subspecification of the variables mentioned above, thus enabling the system to contain such information which is suggested for Arctic areas, and at the same time preserving the comparability of data at an aggregated level. Further development is suggested in a plan of work.

Accidents↗
PubMed1991

[Insect stings and visits to emergency departments].

For four representative hospitals, emergency room contacts were registered during 1988, 1989 and 1990. A total of 2,935 of these contacts were due to insect stings, equivalent to approximately 9,000 p.a. in the whole of Denmark. For insect sting allergics and for others with severe reactions to insect stings it is important to realize that stings can occur during whole year and during day as well as at night. However, 59% were stung in July or in August and 46% between 3 and 9 p.m. Stings on head or hands were most common. Only 2% required admission and only 5% were controlled in out-patient clinics or by doctors outside hospitals. This means that surprisingly few patients were referred for allergy testing and possibly immunotherapy.

Adolescent↗
PubMed1991

Prostatectomy in Denmark. Regional variation and the diffusion of medical technology 1977-1985.

In many countries prostatectomy is one of the most common surgical operations in elderly men. We used administrative data for the entire male population of Denmark to study temporal and regional variations in the use of prostatectomy from 1977 to 1985. The total annual number of prostatectomies increased by 43% during the period, when the transurethral procedure (TURP) gradually replaced traditional open surgery. TURP accounted for 56% of all operations in 1977 but increased its share to 92% in 1985. Substantial regional variations occurred with index values for prostatectomy in 72 recruitment areas ranging from 0.56 to 1.62 (SCV x 100 = 5.3). The amount of variation decreased during the process of technology diffusion, but remained at a relatively high level (as in other countries) even after the process had been completed (SCV x 100 = 5.1).

Denmark↗
PubMed1989

[Traffic accidents load on the Danish hospital system].

During 1984, the police registered 14,383 injured persons resulting from traffic accidents. A total of 7,093 of these could be found again in the National Patient Register. The National Patient Register had further information about 8,095 persons who had been injured in traffic accidents. The total number of persons injured in traffic accidents in 1984 increases thus by 56% when these two registers are combined. Traffic accidents in 1984 were responsible for at least 204,020 bed-days. This corresponds to occupation of 716 of the beds in Danish hospitals throughout the year by the victims of traffic accidents. One third of these beds are occupied by the drivers/passengers of private cars, vans etc. The average number of bed-days is 13.4. Pedestrians have the longest periods of hospitalization with 24.1 per accident and cyclists have the shortest periods of hospitalization with 8.3 days per accident.

Accidents, Traffic↗
PubMed1989

Prevention of urethral stricture formation after transurethral resection of the prostate: a controlled randomized study of Otis urethrotomy versus urethral dilation and the use of the polytetrafluoroethylene coated versus the uninsulated metal sheath.

Stricture formation after transurethral prostatectomy was studied in a randomized clinical trial including 185 patients. The patients were allocated to either a 2-day urethral catheter-dilation or internal Otis urethrotomy and to an operation with either a polytetrafluoroethylene coated or an uninsulated metal resectoscope. Urethral stricture was defined as an obstruction resulting in a maximum urine flow rate of less than 15 ml. per second and not permitting the passage of a 21F cystoscope. The frequency of urethral strictures was significantly lower after Otis internal urethrotomy (4 per cent) than after a 2-day urethral catheter dilation (16 per cent). The incidence of stricture formation was similar in patients operated on with a polytetrafluoroethylene coated (8 per cent) and with an uninsulated metal (12 per cent) resectoscope sheath. The incidence of stricture formation was unrelated to age, duration of preoperative and postoperative catheterization, operating time and presence of urinary tract infection.

Aged↗
PubMed1986

Transpubic cystectomy and ileocecal bladder replacement after preoperative radiotherapy for bladder cancer.

Radical cystectomy was modified by leaving the apical prostatic capsule to facilitate anastomosis of the isolated ileocecal segment to the urethra and to preserve erectile potency. The transpubic approach was used to increase the exposure, and to facilitate dissection and anastomosis. A total of 15 patients with stages T1 to T4 bladder tumors underwent the operation: 13 after preoperative radiotherapy with 4,000 rad and 2 had salvage cystectomy after 6,000 rad. One patient died postoperatively. The remaining 14 patients underwent urodynamic evaluation 3 to 6 months postoperatively. The maximum urine flow rates were almost normal and none of the patients had significant residual urine. Daytime urinary continence was satisfactory in 13 patients and 1 was moderately incontinent. All of the patients were incontinent at night, probably owing to peristaltic contractions in the intestinal bladder and relaxation of the pelvic floor muscles. Preoperatively, 8 patients experienced erections and 7 had intercourse. Postoperatively, erectile potency was preserved in 4 patients and 3 had sexual function. No orthopedic disability occurred postoperatively. The median followup was 20 months, with a range of 3 to 30 months. There have been no local recurrences. A year postoperatively 6 of 9 patients had sterile urine. This technique makes it possible to avoid a urinary stoma, to obtain satisfactory voiding and urinary continence in almost all cases, and to preserve sexual function in some patients after cystectomy.

Aged↗
PubMed1986

The Copenhagen bladder cancer project I.

A material of 746 consecutive patients with tumours of the bladder from three hospitals in Greater Copenhagen for the period 1968-1974 is presented. This is the result of The Copenhagen Bladder Cancer Project. Some of the aims of the project were to describe the manifestations of bladder cancer by means of a number of examination parameters. The material may be regarded as representative for the region. About 80 percent of the patients are men, and the mean age is 66 years, but higher for patients with deeply invasive tumours and tumours of low degree of differentiation. Haematuria was the presenting symptom in 84 percent of the patients, and only 3.4 percent had urinary tract infection as sole first symptom. The interval from first symptom to hospitalisation was an average of 7.6 months, but less for cases of deeply invasive tumours and tumours of low degree of differentiation. About 60 percent of all bladder tumours are evaluated as being without invasion of the bladder nusculature, and 59 percent of the tumours are of a high degree of differentiation (Grade 0+I+II). Squamous cell carcinomas are found in about three percent and adenocarcinomas in about one percent of the cases. Benign papillomas, corresponding to Grade 0 tumours, are found in only one percent of the cases. About 50 percent of all transitional cell tumours are both superficial and show a high degree of differentiation. Grade II tumours show invasive growth in at least 25 percent of the cases and Grade III tumours in at least 77 percent. The bladder tumours are papillomatous in 66 percent of the cases, and 24 percent of the patients have more than one tumour in the bladder. Intravenous urography showed a pathological condition in 70 percent of the patients.

Aged↗
PubMed1986

The Copenhagen bladder cancer project II.

The aim of this study has been, on the basis of 746 cases of cancer of the bladder from The Copenhagen Bladder Cancer Project, to assess the prognosis in relation to the tumour classification employed. The following five-year survival rates were found: T1, 59.8 percent, T2, 39.0 percent, T3, 19.7 percent, T4, 5.7 percent. There are significant differences in survival between the different T categories. The survival rates were also calculated for the different histological grades, and significant differences were also found here. Both the T classification and the histological grading are, therefore, relevant prognostic criteria. Papillomatous tumours have the same survival, whether solitary or multiple, but solid tumours have a poorer prognosis than papillomatous tumours. Tumour size is likewise a significant prognostic criterion. Of special interest has been the results of radiotherapy related to the same parameters. Neither the T classification nor the histological grading can be used as prognostic criteria for patients in the present material who were treated by radiotherapy. The overall five-year survival for patients treated by radiotherapy was 22 percent. With the investigative parameters employed, it is not possible in advance to select the group of patients with radiosensitive tumours.

Adenocarcinoma↗
PubMed1976

131I-hippuran renography for control of patients with ureterolithiasis.

The value of the 131I-Hippuran renography for control of patients with ureteroliathiasis was investigated in a consecutive series of 58 patients with radiologically verified unilateral ureteroliathiasis. Intravenous pyelography (IVP) and renography (RNG) were performed on admittance and 4-5 weeks later, the interval between the IVP and the RNG being 0-4 days. From 80 comparisons of the results of IVP and RNG (prevalence of abnormal IVP 73%), the predictive value of an abnormal RNG in the control situation was found to be 88% with a 95% confidence interval of 75-93%. The predictive value of a normal RNG was 88% (62-98%). If renography was combined with an X-ray of the abdomen at the control examination, the predictive value of an abnormal RNG was unchanged and the predictive value of a normal RNG increased to 100% (77-100%). On the basis of these high predictive values, a new examination protocol for control of patients with unilateral ureterolithiasis is put forward.

Adult↗