Ultraschall in der Medizin : Organ der Deutschen Gesellschaft für Ultraschall in der Medizin, [der] Österreichischen Gesellschaft für Ultraschall in der Medizin, [der] Schweizerischen Gesellschaft für Ultraschall in Medizin und Biologie
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We investigated the correlation between intracranial pressure and flow parameters by simultaneous Doppler sonographic flow measurements in the internal carotid arteries and estimation of the intracranial pressure over the anterior fontanelle. ⋯ Flow measurements in extra- and intracranial sections of the internal carotid arteries are an accurate method for semiquantitative estimation of increased intracranial pressure. This method is superior to the measurement of the RI. Slightly increased intracranial pressures below 20 cm H2O cause an increase of the I/E-ratio above 1, whereas the RI does not change. Moderately increase of the intracranial pressure above 20 cm H2O lowers the I/E-ratio significantly below normal values of 0.8, whereas the RI increases.
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Establishing a reliable central venous access is an important procedure in clinical haematology and oncology. The purpose of this study was to determine how anatomical variations in the internal jugular vein (IJV) and its position in relation to the common carotid artery (CCA) in cancer patients affects external landmark puncture. ⋯ External landmark puncture may be difficult in a considerable number of patients since the IJV might not be situated in the presumed location anteriorly or laterally to the CCA, or a normal lumen may not be present in approximately 1/3 of cancer patients. This study supports the use of ultrasound-guided techniques for central venous catheters particularly in haematological and oncological patients.
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Up to now, sonography of the thorax has not been taken into consideration in cases of interstitial lung disease because of its technical limitations. This study was aimed at examining pleural and subpleural alterations in cases of interstitial lung disease and comparing the sonographic method with the usual imaging procedures such as x-ray and computer tomography. ⋯ Sonography of the thorax has proved to be an excellent complementing examination method in cases of interstitial lung disease. The advantages lie in the possible detection of small pleural effusions and small subpleural infiltrations, where this method can also be used to monitor therapy.
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The traditional anatomic landmark technique usually allows a rapid and easy central venous access but this technique is not always successful and can be associated with severe complications. We developed an ultrasonically guided one-operator-catheterization technique whereas a second operator to place and hold the ultrasound transducer is not necessary. ⋯ Once the decision for central venous access has been made the safest technique should be applied. The ultrasonically guided catheterization technique allows a fast, safe and convenient central venous access for our patients.
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To determine the frequency of deep vein thrombosis in the veins of the calf muscles. The risk of embolism in relation to the localisation of thrombosis was also evaluated. ⋯ The veins of the calf muscles are a common site of acute DVT and a source of pulmonary embolism. They should always be investigated in patients with suspected DVT of the calf, and in patients with pulmonary embolism.