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Ann Thorac Surg 2006;81:1109-1111
© 2006 The Society of Thoracic Surgeons

Case report

Arteriolar Blood Flow Pulsatility in a Patient Before and After Implantation of an Axial Flow Pump

Helmut Habazettl, MD a , * , Marian Kukucka, MD b , Yu G. Weng, MD c , Wolfgang M. Kuebler, MD a , Roland Hetzer, MD c , Hermann Kuppe, MD b , Axel R. Pries, MD a

a Institute of Physiology, Charité Campus Benjamin Franklin, Berlin, Germany
b Institute of Anesthesiology, Deutsches Herzzentrum, Berlin, Germany
c Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum, Berlin, Germany

Accepted for publication December 21, 2004.

* Address correspondence to Dr Habazettl, Institute of Physiology, Charité Campus Benjamin Franklin, Arnimallee 22, Berlin, 14195 Germany (Email: helmut.habazettl{at}charite.de).

In a patient with end stage ischemic heart failure scheduled for implantation of an axial flow pump small arteriolar flow pattern was recorded using a novel intravital microscope. Preoperative arteriolar blood flow velocity was highly pulsatile, ranging from about 7 to 16 mm per second in a 12.8 µm diameter arteriole. After implantation of the pump, this pulsatility was abrogated and arteriolar blood flow velocity changed instantaneously with changes in pump speed (eg, 2 mm/s at 5,000 rpm vs 3.5 mm/s at 8,000 rpm in an 8.9 µm diameter arteriole). This lack of flow velocity oscillations may have profound long-term effects on shear stress regulated arteriolar remodeling.




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[Abstract] [Full Text] [PDF]


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