Messung des Blutflusses in Ösophagusvarizen mit einem endoskopischen Ultraschall-Doppler

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Abstract
A new ultrasound Doppler probe allows endoscopic measurement of blood flow in oesophageal varices. First investigations in 6 patients show that the measurements are easy and well reproducible. Velocity of blood flow depends on respiration. Cephalad flow increases during inspiration. Caudalad flow may be enhanced by expiration and decreased by inspiration. Cephalad and caudalad blood flow in the same varix may point to drainage by a perforating vein. During and after endoscopic sclerosing, changes in blood flow can be demonstrated. This method gives us the possibility to assess blood flow in oesophageal varices not only for pathophysiological studies, but also for planning and control of sclerosing therapy.

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