Biomedical subjects

S Zenker

Publications and source records attributed to S Zenker.

5 recordsLinked to original sources

PubMed2003

Surgical treatment of tinea capitis in childhood.

Fungal infections of the scalp can cause kerion, pus-filled swellings, that may look like bacterial abscesses. We report on two children who underwent incision and drainage of their kerions under local and general anesthesia. This treatment was inappropriate: it carried the risk associated with general anesthesia and surgery without providing the therapeutic chance linked to adequate antimicrobial chemotherapy. We recommend that children who are present at emergency departments with pus-filled swellings on the scalp should be referred to a dermatology unit where appropriate clinical and laboratory investigations and antifungal treatment can be provided, if considered adequate.

Abscess↗

PubMed2002

Growth hormone deficiency in pituitary disease: relationship to depression, apathy and somatic complaints.

OBJECTIVE: Adults with GH deficiency (GHD) have been reported to suffer from increased levels of depression and apathy, which are thought to contribute to the reduced quality of life observed in these patients when compared with healthy controls. Recent studies, however, cast doubt on the attribution of these impairments to GHD as opposed to an unspecific stress response to the chronic medical condition. DESIGN: To further clarify this relationship, we used psychometric tests to quantify depression, apathy and typical psychosomatic complaints in patients with different types of pituitary disease and compared the results with measurements of the patients' widely varying GH status. SUBJECTS AND METHODS: In 98 patients, serum IGF-I was measured and at least one provocative test of the somatotrope pituitary axis was performed (GH-releasing hormone test (GHRHT) and/or insulin tolerance test (ITT)). All patients completed a set of well-established psychometric instruments (Beck Depression Inventory (BDI), Apathy Evaluation Scale (AS) and List of Somatic Complaints (LSC)). In addition, AS was administered in an informant report version for completion by a close relative or friend to verify the validity of the patient's self assessment. RESULTS: No relationship between measures of GHD (IGF-I, GHRHT and ITT) and psychometrically measured depression, apathy or psychosomatic well-being was found. A highly significant linear correlation between scores of all psychometric instruments (BDI, AS and LSC) was found. CONCLUSIONS: The absence of any relationship between the severity of GHD and the level of depression/apathy/psychosomatic complaints suggests that these impairments are not specific symptoms of GHD. The reported improvement of these symptoms under GH substitution therapy might thus be interpreted as a secondary effect of somatic effects of GH substitution. Consequently, indication for GH substitution therapy should not be based on psychological impairments alone without the presence of somatic symptoms of GHD.

Depression↗

PubMed2000

[CancerNet online--a contribution to improving oncologic management].

OBJECTIVE: We started the CancerNet project to evaluate the suitability of the internet to improve the quality of health care and the physician-patient relationship by offering worldwide access to high quality guidelines and standards. METHODS: Since early 1994 we have offered access to the National Cancer Institute's guidelines for current cancer therapy to physicians via WWW. These guidelines, which are provided by the NCI in accordance with the rules for evidence-based medicine, are accompanied by general information for non-professionals. Every month about 500 text-documents are HTML-encoded, linked together to about 10,000 abstracts available online as well as to MEDLINE. CancerNet is offered in English, Spanish, and German (only patient information) (http://www.meb.uni-bonn.de/cancernet/). RESULTS: From analyzing log files and user surveys in 1996, 1997, 1998, 1999, and 2000, we know that offering guidelines and patient information via the web fits most expectations of our users (physicians, health professionals, scientists, and laymen) on a high quality medical information service. Since 1994 nearly 2 million users, including more than 200,000 physicians, used our service. About 95% rated our service excellent or good.

Data Collection↗

PubMed2000

Differences in demographic data regarding physicians and patients in the US or abroad using a medically oriented Internet information service.

Since early 1994 we have offered access to the National Cancer Institute's guidelines for current cancer therapy to physicians via WWW. These guidelines, which are provided by the NCI in accordance with the rules for evidence-based medicine, are accompanied by general information for non-professionals. Since we launched this comprehensive cancer-related WWW information service in 1994, more than about 1 million customers retrieved documents from our CancerNet service via WWW (http://www.meb.uni-bonn.de/cancernet/). From user surveys in 1996, 1997, 1998, and 1999, we obtained demographic data about our users, their interests, and their opinions regarding this information service. The following analysis shows how this service was used over the years and includes some unexpected differences between users in the US, Europe, and developing countries.

Adult↗

PubMed1991

[Risk of CMV infection and illness after kidney transplantation].

Between 1980 and 1986 465 cadaveric kidney transplants were performed at the Kidney Transplant Centre Berlin-Friedrichshain. The post-transplant risk to acquire a cytomegalovirus (CMV) infection depended on the preoperative CMV antibody status of donor and recipient, on the nettoimmunosuppression and on the recipient's age. The highest infection rate and the most serious courses showed seronegative recipients from seropositive donors. The typical time interval of clinical manifestation included the postoperative months 1-3. A significant dependence of the frequency of infection on different immunosuppressive protocols could not be proven. But there was a significant coincidence between CMV infection and rejection crises. In spite of the raised frequency of rejection crises an influence of the CMV infection on the 1-year-graft and patient survival rates could not be demonstrated. Both an early diagnosis and an adequate therapy are of particular importance.

Age Factors↗