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A Giebel

Publications and source records attributed to A Giebel.

5 recordsLinked to original sources
PubMed2001

Applying signal statistical analysis to TEOAE measurements.

Automated detection of TEOAE gains increasing importance in screening applications. Conventional signal statistical analysis methods (buffer correlation and +/- difference) of TEOAE waveforms are compared with one another and with a method based on binomial statistics. It turns out that binomial statistics are more reliable and valid than conventional methods with common criteria. In particular, under narrowband noise conditions they are also faster. A frequency specific evaluation is hardly possible by means of conventional methods because of the high random correlation of narrow band signals.

Data Interpretation, Statistical↗
PubMed1997

["Myxoma syndrome"--a "benign" disease with "malignant" course].

We are reporting on a 36 year-old woman who presented with recurrent cardiac myxomas over a period of nine years. Two of the tumors typically originated in the left atrium and one in the right atrium. Tumor embolization was the presenting symptom twice, leading to reversible cerebral ischemia and minor pulmonary embolism, respectively. The third tumor remained asymptomatic and was detected during routine echocardiographic examination. Based on a positive family history of cardiac tumors, a facially pronounced hyperpigmentation of the skin and the presence of a thyroid adenoma, the diagnosis of a "myxoma syndrome" was established. Patients with "myxoma syndrome" are generally younger than their counterparts with "sporadic myxoma" (mean age at diagnosis 25 vs. 56 years) and have a high frequency of unusual skin freckling (68%). Familial clustering of cardiac myxomas is also frequent (25%). The tumors may be located in any of the cardiac chambers (87% in the atrias, 13% in the ventricles, 50% at multiple sites simultaneously) and have relatively high (18%) 5-year recurrence rate after surgical excision. Since the clinical signs of cardiac tumors are non-specific, diagnosis essentially relies on cardiac imaging by echocardiography, computer tomography, or angiography. The superiority of transesophageal echocardiography is emphasized in this report.

Adult↗
PubMed1977

[Not Available].

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Germany↗
PubMed1976

[Influence of pathogenesis of purulent meningitis on the prognosis (author's transl)].

1. Where a purulent meningitis develops in association with a cyclic infectious disease (e.g. meningococcal meningitis), the prognosis is to be designated good, provided that it is diagnosed early and that no Waterhouse-Friderichsen syndrome is present and that adequate treatment is carried out. 2. In transmitted meningitis after purulent processes in the head region (sinusitis, otitis media), in addition to early diagnosis and antibiotic therapy the suppurating focus must also be cleared out in time. 3. The worst prognosis is for a purulent meningitis associated with sepsis, because here there must not only be early recognition and treatment of the meningitis, but also the recognition and treatment of the septic focus.

Adult↗