Search PubMed⌕ Search

Biomedical subjects

K Lehmann

Publications and source records attributed to K Lehmann.

193 records · Page 11Linked to original sources
PubMedDate not supplied

[Sexual male dysfunction].

Disorders of libido, erection orgasm and ejaculation are the most important reasons for male sexual dysfunction (MSD), because of organic reasons, medical therapies and social stressing factors, MSD is increasingly evaluated more precisely and it is not limited on erectile dysfunction any longer. With the appearance of the first oral acting substance on the market and the presence of media a great pressure arose to the medical doctors to do prescriptions. Therefore, it is very important to have consultation, diagnostics and treatment of the MSD done with elaborated medical criteria.

Erectile Dysfunction↗
PubMedDate not supplied

[Indomethacin kinetics and urinary excretion of prostaglandin E2 following oral administration of various dosage forms of indomethacin].

In a controlled crossover study healthy volunteers received a single oral dose of 75 mg indomethacin, 75 mg sustained-release indomethacin, or the new therapeutic system indomethacin Gits 7/85. Dependence on the time of administration was investigated by comparing the plasma level curves obtained following morning and evening administration of indomethacin and indomethacin Gits. Blood samples were taken at defined intervals following administration for determination of indomethacin plasma levels. To determine urinary excretion of prostaglandin (PG)E2, urine was collected during four consecutive 6 h-clearance periods after administration of the indomethacin preparations. The plasma level curve following administration of indomethacin Gits 7/85 did not exhibit clearly distinct initial peaks and, in contrast to the other drug preparations, remained nearly constant over 10-12 h. Indomethacin induced a significant suppression of urinary PGE2 excretion over a period of 12 h, whereas both sustained release indomethacin and indomethacin Gits 7/85 decreased urinary PGE2 excretion for 18 h. Neither the plasma concentration curve of indomethacin nor the inhibitory effect on urinary PGE2 excretion was dependent on the time of administration. Initial central nervous side effects, such as dizziness, were reported by all volunteers after taking indomethacin and by half of the volunteers following sustained release indomethacin, whereas no adverse effects were observed after administration of indomethacin Gits 7/85. The present study demonstrates that indomethacin Gits 7/85 produces no initial peaks of plasma levels but rather a sustained concentration plateau. The excellent tolerability of indomethacin Gits 7/85 is probably due to the lack of peak plasma concentrations.

Administration, Oral↗
PubMedDate not supplied

[Indomethacin kinetics in synovia and plasma following administration of indomethacin Gits 7/85 in patients with chronic polyarthritis].

Patients suffering from rheumatoid arthritis received a single dose of the new therapeutic system of indomethacin (Gits 7/85). Samples of plasma and synovial fluid were taken after 1, 2, 4, 6, 8, 10, 12, and 24 h. Concentration peaks could not be observed. After 2-3 h plasma levels were achieved which remained constant over the investigational period. Indomethacin concentrations in synovial fluid were seen with some delay. All synovial fluid levels after single application were lower than the plasma concentrations. The kinetics of elimination showed no difference between the two compartments. The above findings confirm the expectations regarding the new therapeutic system of indomethacin (Gits 7/85), i.e., the maintenance of a nearly constant plasma and synovia level for at least 10 h. The avoidance of peaks is seen as an additional advantage.

Arthritis, Rheumatoid↗
PubMedDate not supplied

CART and logistic regression analyses of risk factors for first dose hypotension by an ACE-inhibitor.

Angiotensin converting enzyme inhibitors (ACEI) are established drugs for the treatment of congestive heart failure. Cases of symptomatic hypotension, especially on the first day of treatment, have been reported occasionally. The database we analysed consisted of 1,177 patients, mean age approximately 70 yrs, with congestive heart failure NYHA functional class II or III. These patients were treated and observed prospectively according to a uniform protocol, starting therapy with 2.5 mg enalapril and measuring blood pressure at hourly intervals for eight hours thereafter. 94.6% of the patients experienced no symptomatic hypotension, 4.75% moderate symptoms (e.g. dizziness, headache) and 0.59% severe symptoms (e.g. fainting, collapse, renal failure). For the analyses of risk factors a large number of baseline variables were analysed univariately to select those significant for inclusion in a multivariate stepwise logistic regression. Alternatively the CART-(classification and regression tree) technique was used. Both techniques showed diastolic blood pressure < or = 70 mmHg to be the single most significant risk factor. CART-analyses showed also pretreatment with nitrates and systolic blood pressure < or = 120 mmHg to be of prognostic relevance. Thus CART is a valuable complement when looking for prognostic factors.

Aged↗