Uwe Sievert

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CONCLUSIONS The results of this study show that in clinical practice it will not be easy to diagnose tonic contractions of the tensor tympani muscle and only a combination of findings will be helpful. Based on these experimental results a clinical study will be started which should clarify the diagnostic relevance of indicators of tonic tensor muscle(More)
PROBLEMS ADDRESSED Despite their abundant spread, mobile phones are suspected by a major share of the population to cause adverse effects on health and welfare. The ear as the sense organ next to the individual device has rarely been investigated for short-term effects in this regard. In a previous article, we could not prove any impact on the vestibular(More)
OBJECTIVES Pulsating electromagnetic (EM) radiation emitted by mobile phones is often incriminated for causing tissue alterations by caloric effects. In particular, the eye and the ear were regarded as possible "hot spots," with heating up to 1 degree C, in which EM radiation might have negative effects. If so, these temperature increments should be large(More)
OBJECTIVE To prove the feasibility of recording stapedius reflexes by bipolar electromyography intra-operatively during cochlea implant via a bipolar hook needle electrode. STUDY DESIGN Prospective study. SETTING Tertiary referral center. PATIENTS Adults receiving a MED-EL cochlear implant. INTERVENTION Diagnostic. MAIN OUTCOME MEASURES Stapedius(More)
OBJECTIVES To assess the reliability of visually assessed thresholds of the electrically elicited stapedius reflex, recorded during cochlear implant surgery, compared with intra-operative tympanometric threshold assessment. Intra-operatively recorded electrically elicited stapedius reflex thresholds vary considerably, and differ from those measured(More)
CONCLUSION By means of a direct, though non-invasive experiment on healthy humans we could demonstrate that middle ear (ME) pressure decreases when the eustachian tube (ET) does not open. Thus with a very simple method the basic theory of continuous gas loss from the ME into the circulation and the replenishment of the loss through the ET could be(More)
Healing and integration of a cochlear implant is largely influenced by good blood circulation in the covering skin, which, on the other hand, is closely correlated to skin temperature. Measuring superficial flap temperatures by thermography is an easy way to get some clues about the corresponding blood supply. These data should allow some implications for(More)
Das Makulaforamen (MF) ist eine Erkrankung des Sehzentrums der Netzhaut des menschlichen Auges und führt unbehandelt zu starker Sehbeeinträchtigung. Die Makulaforamenchirurgie ist seit Jahren sehr erfolgreich und zeigt in frühen Stadien einen sehr guten anatomischen und funktionellen Erfolg, weniger jedoch – trotz ständiger Verbesserung der(More)
BACKGROUND Sufficient blood supply of the flap is a significant factor for proper wound healing and lifelong integration of a cochlear implant. Superficial temperature as an indicator of cutaneous blood circulation can be visualized easily by thermography. QUESTION We examined the correlation between temperature distribution and the anatomic course of(More)
BACKGROUND Vertigo during suction-cleaning of open mastoid cavities is caused by cold stimulation of the vestibular organ. In clinical and model-experimental measurements we tried to estimate the physical background and the dimension of this temperature drop. METHODS Using different techniques like thermo-probes, thermovision, or additional model(More)