title: Local intraarterial thrombolysis: in vitro comparison between automatic and manual pulse-spray infusion.
abstract: OBJECTIVE
  Manual and automatic pulse-spray infusion techniques are compared in vitro to evaluate the efficacy of thrombolysis and the distribution of urokinase and saline solution within thrombus using a pulse-spray catheter.
  
  
  METHODS
  A pulse-spray catheter was introduced into a human thrombus within a stenotic flow model. Automatic and manual pulsed infusion of urokinase and automatic pulsed infusion of saline solution were compared. To quantify the efficacy of thrombolysis, pressure gradients were recorded proximal and distal to the thrombus and during the course of infusion. Distribution of infused urokinase was assessed radiographically.
  
  
  RESULTS
  The fastest and most homogeneous dissolution of the thrombus was achieved with automatic pulsed infusion of urokinase, shown by decreasing transthrombotic pressure gradients (p < 0.001, Wilcoxon, matched pairs). Manual pulsed infusion of urokinase or saline solution resulted in inhomogeneous thrombus dissolution and delayed thrombolysis.
  
  
  CONCLUSIONS
  Application of automatic pulse-spray injectors seems beneficial for more effective and homogeneous intraarterial pulse-spray thrombolysis when compared with conventional manual pulsed technique.
authors.affiliation: Medizinisches Zentrum für Radiologie, Abteilung für Strahlendiagnostik, Klinikum der Philipps-Universität, Marburg, Germany.
authors.forename: J J
authors.initials: JJ
authors.lastname: Froelich
authors.forename: C
authors.initials: C
authors.lastname: Freymann
authors.forename: M
authors.initials: M
authors.lastname: Hoppe
authors.forename: T
authors.initials: T
authors.lastname: Thiel
authors.forename: H J
authors.initials: HJ
authors.lastname: Wagner
authors.forename: K H
authors.initials: KH
authors.lastname: Barth
authors.forename: K J
authors.initials: KJ
authors.lastname: Klose
mesh_terms: D006801:Humans; D066298:In Vitro Techniques; D007261:Infusions, Intra-Arterial / Q000379:methods; D008955:Models, Cardiovascular; D008961:Models, Structural; D011312:Pressure; D012965:Sodium Chloride / Q000008:administration & dosage; D015912:Thrombolytic Therapy / Q000379:methods*; D013927:Thrombosis / Q000188:drug therapy*; D014568:Urokinase-Type Plasminogen Activator / Q000008:administration & dosage
chemical_list: D012965:Sodium Chloride; D014568:Urokinase-Type Plasminogen Activator