title: A new experimental approach for monitoring postoperative bypass patency after coronary artery bypass grafting.
abstract: Little information is known concerning hemodynamic parameters of bypass grafts after open heart surgery during the postoperative period. As there is no easy to use bedside-method for monitoring, we developed a new implantable Doppler probe to measure blood flow velocity with a 20 MHz pulsed Doppler system. The accuracy of this method was proved in a circulatory model and in animal studies. Our conclusion is that the implantable pulsed Doppler system is a sensitive method for monitoring small vessel hemodynamics.
authors.affiliation: Department of Cardiac Surgery, University of Ulm, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Lass
authors.forename: K
authors.initials: K
authors.lastname: Paulat
authors.forename: R
authors.initials: R
authors.lastname: Brucher
authors.forename: C
authors.initials: C
authors.lastname: Hübner
authors.forename: P
authors.initials: P
authors.lastname: Schmid
authors.forename: U
authors.initials: U
authors.lastname: Uetz
authors.forename: A
authors.initials: A
authors.lastname: Hannekum
mesh_terms: D000818:Animals; D001783:Blood Flow Velocity / Q000502:physiology; D001810:Blood Volume / Q000502:physiology; D002138:Calibration; D001026:Coronary Artery Bypass; D004285:Dogs; D004867:Equipment Design; D008323:Mammary Arteries / Q000502:physiology; D008955:Models, Cardiovascular; D008991:Monitoring, Physiologic / Q000295:instrumentation* / Q000379:methods; D019736:Prostheses and Implants; D015203:Reproducibility of Results; D012212:Rheology; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation* / Q000379:methods; D014654:Vascular Patency / Q000502:physiology*