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Perfusion, Vol. 18, No. 5, 325-329 (2003)
DOI: 10.1191/0267659103pf678oa

The dynamic bubble trap reduces microbubbles in extracorporeal circulation and high intensity transient signals in the middle cerebral artery: a case report

Mathias Perthel

Division of Cardiac Surgery, Herz-Kreislauf-Klinik, Bad Bevensen, Germany, M.Perthel{at}herz-kreislauf-klinik-bevensen.de

Samer Kseibi

Division of Cardiac Surgery, Herz-Kreislauf-Klinik, Bad Bevensen, Germany

Andreas Bendisch

Division of Cardiac Surgery, Herz-Kreislauf-Klinik, Bad Bevensen, Germany

Joachim Laas

Division of Cardiac Surgery, Herz-Kreislauf-Klinik, Bad Bevensen, Germany

Microemboli during extracorporeal circulation (ECC) might be a reason for postoperative neuropsychological dysfunction. This case report shows that reduction of microbubbles in the arterial line, as well as high intensity transient signals (HITS) in the middle cerebral artery (MCA), could be accomplished by use of a dynamic bubble trap (DBT) during routine coronary artery bypass graft (CABG) surgery in a 63-year-old male. The DBT was placed after the arterial filter, an ultrasound Doppler device was used for detection of microemboli before and after the DBT. HITS were measured by a transcranial ultrasound Doppler in both MCAs. For first 32 min of ECC, the DBT was excluded; 54 916 microbubbles and 507 HITS were counted. In the next 30 min, blood flow was directed through the DBT. This led to a significant reduction of microbubbles from 55 888 to 18 237; accordingly, only 120 HITS were registered. A DBT, integrated in ECC for routine CABG, effectively reduces air bubbles, thus protecting the cerebrovascular system from micro-embolization, as demonstrated by lower HITS counts.


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S. Goritz, H. Schelkle, J.-G. Rein, and S. Urbanek
Dynamic bubble trap can replace an arterial filter during cardiopulmonary bypass surgery.
Perfusion, November 1, 2006; 21(6): 367 - 371.
[Abstract] [PDF]

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 PerfusionHome page
M. Perthel, S. Kseibi, A. Bendisch, and J. Laas
Use of a dynamic bubble trap in the arterial line reduces microbubbles during cardiopulmonary bypass and microembolic signals in the middle cerebral artery
Perfusion, May 1, 2005; 20(3): 151 - 156.
[Abstract] [PDF]