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Biomedical subjects

W Mohnike

Publications and source records attributed to W Mohnike.

13 recordsLinked to original sources
PubMed2005

The rise and fall of PET and PET/CT: a German perspective.

PET is being considered a diagnostic commodity in clinical practice worldwide and thus receives increasing attention by health insurances and governmental organizations. In Germany, however, neither PET nor PET/CT are subject to reimbursement. This renders clinical PET and PET/CT imaging a challenge both in a general hospital environment and in private practice. This article describes briefly these challenges, which are not solely related to turf battles and associated costs.

Female↗
PubMed1988

Nitrendipine treatment in so-called therapy-resistant arterial hypertension; effect as monotherapy and in combination with propranolol on blood pressure, heart rate, other hemodynamic parameters, plasma renin activity, and catecholamines.

Twenty-three patients [mean age 49.7 +/- 5.6 years (WHO II-III)] with severe hypertension and not responding to previous drug treatment were included in the study to evaluate the effect of nitrendipine (NTP) as monotherapy and also in combination with propranolol (PRO). After a control period of 10 days, NTP was started with 20 mg twice a day and titrated to the maximal dosage of 2 X 40 mg/day. After 1 week of NTP treatment, PRO was added in increasing dosage to a maximal 2 X 100 mg/day. NTP lowered systolic and diastolic blood pressure (BP) significantly (supine BP from 182/119 +/- 19/9 to 157/98 +/- 16/9 mm Hg). After combination with PRO, systolic BP was decreased additionally (supine BP from 157/98 +/- 16/9 to 150/97 +/- 19/9 mm Hg). Plasma norepinephrine (NE) was increased by NTP (from 1.82 +/- 0.78 to 2.38 +/- 1.08 nmol/l, p less than 0.01) and remained elevated during PRO treatment (2.76 +/- 1.10 nmol/l). Plasma renin activity (PRA) showed no significant changes by NTP. Additional effect of PRO on BP correlated significantly with NE and PRA after the NTP period. Plasma epinephrine and dopamine beta-hydroxylase remained unchanged. NTP decreased systemic resistance, calculated from isotope dilution technique (p less than 0.05); after combination with PRO no additional significant changes were registered. Nitrendipine is an effective alternative in so-called therapy-resistant hypertension.

Blood Pressure↗
PubMed1983

An evaluation of coronary regulation by the 99mTc bolus technique.

A new non-invasive method for investigating total coronary blood supply is presented. This method is based on the principle of indicator dilution of a radio-nuclide bolus (99Tc), requiring a scintillation camera with high sensitivity and high picture resolution. The first findings obtained from 83 patients are shown. With 4.61 +/- 1.19% of cardiac output the mean values of the rates of coronary perfusion obtained at rest in subjects with a normal heart differed significantly from those obtained for patients with certain coronary occlusions (8.18 +/- 3.99% of cardiac output) and from those obtained for hypertensive patients (Stages I-III). Double examinations carried out on 20 patients yielded an adequate reproducibility. The mean deviation of the double examinations from one another was 16%.

Adult↗
PubMed1983

[Studies on central and peripheral hemodynamics using radiocardiography and Xenon-133 muscle clearance in patients with essential hypertension].

Examination of 80 patients with essential hypertension revealed a significant correlation between the tonus of peripheral muscular arterioles on the one hand, and the stage and duration of hypertension and age of the patients, on the other hand. The correlation between arteriolar tonus and indicators of cardiac pump function was less marked. The results confirmed the close relationship between changes of peripheral blood bed and development of hypertension. The use of 133Xe half-period for measuring the peripheral arteriolar tonus proved a simple, but informative method adding an important indicator of peripheral haemodynamics to the results of haemodynamic examination.

Adolescent↗