Anmeldung zur Tagung
Registration
Grußwort
Invitation
Themen
Topics
Allgemeiner Ablauf
General overview
Wissenschaftliches Programm
Scientific program
Kurse
Courses
Symposien
Symposiums
Frühstück mit Spezialisten
Breakfast with specialists
Arzthelferinnen-Fortbildung
Rahmenprogramm
Social program
DOG Information
DOG Information
Allgemeine Informationen
General Information
Autorenindex
Index of Authors
Ausstellerliste
Exhibitors
Sponsoren
Sponsors
Teilnahmegebühren
Registration fees
Impressum
Effect of isovolemic Hemodilution on retrobulbar Hemodynamics in disorders of ocular Perfusion
Schwanitz K., Müller M. F., Pillunat L. E.
Universitäts-Augenklinik, Universitätsklinikum TU Dresden, Fetscherstr. 74, D-01307 Dresden
Objective: The therapeutic benefit of isovolemic Hemodilution
treatment (IHT) in ocular vessel occlusions is subject of debates. This
study aims at the evaluation of IHT with respect to retrobulbar Hemodynamics.
Methods: In a prospective study we examined 54 eyes from 27 patients
with a disorder in ocular Perfusion (OPS) (17 male/10 female, average
age 62.8 years, 11 arterial OPS, 18 venous OPS) utilizing Doppler ultrasonography
(Toshiba SSH 140A) prior to and 10 days after initiating the IHT. The
blood flow measurement of the A. and V. centralis retinae, A. ophthalmica,
Aa. ciliares, and V. supraorbitalis has been carried out both on the affected
and the not affected eye in m/s. The target hematocrit value for the IHT
was HK </= 0,37. The statistical analysis took place by applying the
Wilcoxon's test for blindfolded samples.
Results: After applying IHT a significant increase of blood flow
velocity in the A. ophth. and the Aa. ciliares (p<0.05) could be observed
in arterial OPS. In venous OPS a significant increase (p<0.05) of blood
flow was recognized in all examined vessels, except for the A. ophth.
The Resistance Index (RI) in arterial OPS remained unchanged after IHT.
Conclusion: After the IHT both in arterial and venous OPS a significant
improvement of ocular Hemodynamics could be obtained.