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Biomedical subjects

G Urbach

Publications and source records attributed to G Urbach.

11 recordsLinked to original sources
PubMed1999

Bilateral lymphangiomas of the ovary: an immunohistochemical characterization and review of the literature.

Lymphangiomas of the ovary are rare tumors, with only 13 cases reported. The diagnoses of these tumors have been based on histologic findings without immunohistochemical confirmation of endothelial cell origin. It is uncertain if these tumors are true neoplasms or if some represent reactive lesions. In this report, the literature is reviewed, and a 53-year-old woman with bilateral ovarian lymphangiomas is described. The ovarian masses were composed of numerous, thin-walled, cystic spaces containing a proteinaceous fluid, mature lymphocytes, and occasional erythrocytes. The cyst walls were lined by flat, benign-appearing cells that were immunoreactive for factor VIII-related antigen, CD34, and CD31. Further examination of the specimen showed absent fallopian tube fimbriae, tuboovarian adhesions, and chronic follicular salpingitis, suggesting that the lymphatic proliferation in the ovaries was a reactive change secondary to impaired regional lymphatic drainage.

Antigens, CD34↗
PubMed1988

Comparison of alfentanil, fentanyl and enflurane as supplements to general anaesthesia for outpatient gynaecologic surgery.

We compared two narcotic/N2O anaesthetic techniques and an inhalational anaesthesia/N2O technique for outpatient surgery in 59 women undergoing short gynaecological procedures. All patients received droperidol 0.625 mg IV, thiopentone and 70 per cent N2O in O2 plus either alfentanil (15 micrograms.kg-1), fentanyl (1.5 microgram.kg-1) or enflurane. The narcotics were given in a double-blind fashion and all anaesthetic techniques were assigned randomly. Cardiorespiratory parameters remained stable in all groups, with few clinically important changes occurring. Recovery was significantly faster in the group receiving alfentanil, with the time to respond to verbal commands and the time to establish alertness significantly faster than with either fentanyl or enflurane. All techniques provided satisfactory anaesthesia; however, the patients receiving alfentanil had significantly more adverse events than those receiving fentanyl.

Adolescent↗
PubMed1987

Dynamic headspace gas chromatography of volatile compounds in milk.

A method is described for investigating volatile compounds in milk. The volatiles are removed from milk by a stream of helium swept at 100 ml/min over the surface of the milk at 70 degrees C. They are trapped on 40 mg of NIOSH charcoal and then desorbed by heat and re-trapped on the front of a chromatographic column of Tenax-GC coated with 1% OV-275, the column being maintained at room temperature during trapping. An amount of 40 mg NIOSH charcoal under these conditions traps over 90% of the total quantity of the lowest boiling compounds swept from the milk, such as acetaldehyde and ethanol, and retains 100% of the total quantity of acetone, propanol and higher boiling compounds from the gas stream. The volume of milk and its temperature affect the ratios of volatiles collected and these factors are useful in increasing the proportion of a volatile of particular interest. The addition of potassium carbonate increases the yield of volatiles from 100 ml aqueous phase but not from 10 ml.

Acetone↗
PubMed1980

Anaesthesia for day-care surgery: a symposium (II). Organization of the out-patient surgical facility.

The organization of three main types of out-patient anaesthesia facility are discussed. These are the hospital unit with independent facilities, the integrated hospital unit and the independent out-patient surgical centre. The use of an out-patient facility for minor surgical procedures has been suggested as a less expensive alternative to in-patient management. Some of the advantages and disadvantages are outlined.

Ambulatory Surgical Procedures↗
PubMed1980

[Oral application of bacterial vaccine for infection prophylaxis (author's transl)].

Guinea pigs were orally and subcutaneously immunized against Pseudomonas aeruginosa. Whereas 93% of untreated control animals died after a subsequent IP infection, vaccinated animals developed an efficient protection. The mortality rate in orally pretreated animals was only 20% - 30%. Some immunological parameters were also improved by vaccination. IgG and IgM concentrations in serum increased, as did the agglutination titer against bacteria. Oral vaccination with heat inactivated pathogenic bacteria seems to be a promising procedure to improve the resistance of patients to bacterial infections.

Administration, Oral↗