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Biomedical subjects

B Henningsen

Publications and source records attributed to B Henningsen.

At least 19 recordsLinked to original sources
PubMed2001

Atomic pseudospin resonance.

A new type of resonance is discovered in Rydberg atoms placed in a constant magnetic field -->B and a transient electric field that rotates at the constant frequency -->omega in a plane perpendicular to -->B. The dynamics is explained in terms of two pseudoparticles with spin 1 / 2 in two generalized magnetic fields. The resonance frequency is predicted and found at -->omega = (e/2m)-->B, where -e/m is the electron's charge-to-(reduced)mass ratio. We discuss the applicability of the resonance to accurate magnetic field measurements and the prospects for determining e/m with improved precision.

Journal Article↗
PubMed1987

[Significance of primary radical surgery for survival following treatment of breast cancer. Problems of interpretation of treatment results of prospective, nonrandomized studies exemplified by the Southwest Germany Breast Cancer Study].

In a prospective non-randomised trial 1642 patients were included. After a mean time of 10 years a follow-up analysis was performed. The importance of the radicality of the primary operative therapy of breast cancer should be evaluated. The mean 5 years survival rate was 67.3%, the 10 year survival rate 51.6%. Tumor stage and age had a highly significant influence on the survival rate. Patients with simple mastectomy had a lower survival rate as patients with radical mastectomy. This apparent difference was caused by a different age distribution in the therapy groups. Accordingly the mean life deficiency was the lowest in the simple mastectomy group. In a multiple hazard statistical analysis tumor stage and age showed a highly significant influence on the survival rate. The intraoperative radicality classification showed a significant correlation to the prognoses of the patients. The operative therapy itself had no significant influence on the survival rate of the patients.

Adult↗
PubMed1983

[The value of radiotherapy after modified radical mastectomy. 10-year results of the Heidelberg study].

Modified radical mastectomy was performed in 142 female patients with operable carcinoma of the breast. One of the two prospectively randomised groups received postoperative radiotherapy with 6000 rad. Survival rates were equal for both groups. Follow-up radiotherapy had a beneficial influence on survival rate and rate of distant metastases in median tumour sites. In lateral tumour localization the course of disease was less favourable with radiotherapy than without. Local relapse rates were slightly, however not significantly, lower after irradiation. The decisive prognostic criterium is T- and N-stage at the time of diagnosis.

Adenocarcinoma, Scirrhous↗
PubMed1981

[Fascial closure of median laparotomies with a synthetic, resorbable suture material (polyglycolic acid)].

In a prospective randomized study polyglycolic acid sutures (PGA) and polyester sutures for closure of median abdominal fascial incisions are compared. Occurrence of infection, incisional hernia, wound dehiscence and suture fistulas is evaluated. With regard to these complications no significant differences could be detected. PGA shows its advantage in less tissue reaction (avoiding fistulae).

Fasciotomy↗
PubMed1979

[The epidemiology of breast neoplasms].

In an epidemiologic study the risks of breast cancer were assessed. An evaluation of the distribution of different tumor stages revealed that more information, in a larger sense more civilization, workship and the life in town makes women more curious and brings them to go sooner to the doctor. A lack of information correlates with more advanced stage of tumor. Significantly more childless women suffer of breast cancer, but a high number of children is no protection. In women with 3 and more children yet more advanced stages were seen. This may be interpreted by isolation, lack of information and distress. A significantly high number of breast cancer patients lost one of their parents by death before the age of 20, which confirms the psychosomatic theory of cancerogenesis (overcoming of the "Objektverlust" in early childhood). The incidence of depressive states before the onset of the disease is significantly higher. A reduced capacity to communicate was also observed. The exploration of sexual behaviour showed more frequently a reduced sexual activity correlated to cohabitarche, number of partners, alibidimia, unwanted pregnancy and masturbation. The ability of adequate sexual life was deeply disturbed by disease and therapy. Following primary therapy intelligent guidance of the patient may avoid occurrence of disturbances of sexual communication.

Breast Neoplasms↗
PubMed1977

[Anti-oestrogen treatment of metastasising carcinoma of the breast (author's transl)].

Within a period of four years 35 patients with metastatic breast cancer were treated with tamoxifen. One third had objective remissions, average duration of complete remission being 30.6 months and of partial remission 13.7 months. Mean survival time from start of tamoxifen treatment in five patients with complete remission was 30.6 months while in seven with partial remission it was 20.4 months. Nine patients with unresponsive metastases had a mean survival time of 24.3 months, the remaining 14 patients who deteriorated surviving for 11.7 months. Ten of the 12 patients who responded well were over 60 years old. Lymph-node and lung or pleural metastases were significantly reduced by treatment in four of eight and six of 15 cases, respectively. Satisfactory regression of bony metastases was never seen. Because of this, combined tamoxifen (10 mg twice daily) and methandrostenolone (1 mg twice daily) was given to an additional five patients, with one of them responding. Side effects included thrombocytopenia and hypercalcaemia.

Adult↗
PubMed1977

[Breast cancer: postoperative care (author's transl)].

Sixty percent of breast cancer patients show postoperative morbidity due to local recurrence or metastases. For these women and those who suffer from therapy-dependent somatic or psychologic disorders, organized postoperative care is necessary. Mode of action and organization of the Heidelberg postoperative care unit are described. An evaluation of postoperative care programs in Germany, Austria and Switzerland reveals the necessity of increasing our activities. An interdisciplinary approach in this field is of great importance.

Austria↗
PubMed1976

Efficacy of gut lavage, hemodialysis, and hemoperfusion in the therapy of paraquat or diquat intoxication.

Clinical and in vitro investigations were carried out to test the efficacy of gut lavage, hemodialysis, and hemoperfusion in the treatment of poisoning with paraquat or diquat. In a patient suffering from diquat intoxication 130 times more diquat was removed by gut lavage 30 h after ingestion than was removed by complete aspiration of the gastric contents. Determination of in vitro clearances for paraquat and diquat by hemodialysis showed that, at serum concentrations of 1-2 ppm, such as are frequently encountered in poisoning in man, toxicologically relevant quantities of herbicide cannot be removed from the body. At a concentration of 20 ppm, on the other hand, hemodialysis proved to be effective, the clearance being 70 ml/min at a blood flow rate of 100 ml/min. The efficacy of hemoperfusion with coated activated charcoal was on the whole better. Especially at concentrations around 1-2 ppm, the clearance values for hemoperfusion were some 5-7 times higher than those for hemodialysis. In a patient suffering from paraquat poisoning, both hemodialysis as well as hemoperfusion were carried out. The in vitro results could be confirmed: At serum concentrations of paraquats less than 1 ppm no clearance could be obtained by hemodialysis while by hemoperfusion with activated charcoal quite high clearance values were measured and the serum level dropped down to zero.

Adult↗
PubMed1976

[Histological findings after transabdominal ligation-resection of the esophagus ad modum boerema (author's transl)].

The esophagus was histologically studied in ten patients, who died after transabdominal ligation-resection of the esophagus ad modum Boerema because of bleeding esophageal varices. The patients had survived the operation for various periods of time. The questioning was, if with this operation with a higher incidence of parietal leakage following mediastinitis and peritonitis has to be calculated. We could not confirm that hypothesis. On the contrary we recognized at the level of the ligation simulataneously degenerated muscles fibres and a regeneration of the esophageal wall by fibrous tissue compensation.

Adult↗