M. Lass et al., A NEW EXPERIMENTAL APPROACH FOR MONITORING POSTOPERATIVE BYPASS PATENCY AFTER CORONARY-ARTERY BYPASS-GRAFTING, International journal of clinical monitoring and computing, 11(1), 1994, pp. 49-55
Little information is known concerning hemodynamic parameters of bypas
s 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.