Experimental fluid dynamics of transventricular apical aortic cannulation.
To clarify the flow pattern from a transventricular apical aortic cannula, hydrodynamic analysis of transventricular apical aortic cannulation (apical cannulation) was performed using particle-image velocimetry in a glass aortic model. Simulated apical cannulation using a 7-mm Sarns Soft-Flow cannula and the newly developed 7-mm apical aortic cannula was compared with standard aortic cannulation. The flow-velocity, streamline, and distribution of magnitude of the strain rate tensor (function of shear stress) were analyzed. Streamline analysis revealed a steady and organized flow profile in apical cannulation as compared with that in standard aortic cannulation. The magnitude of the strain rate tensor decreased within a few centimeters from the exit of the apical cannula.
Fukuda
Ikuo
I
Department of Thoracic and Cardiovascular Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan. ikuofuku@cc.hirosaki-u.ac.jp
Yanaoka
Hideki
H
Inamura
Takao
T
Minakawa
Masahito
M
Daitoku
Kazuyuki
K
Suzuki
Yasuyuki
Y
D001011:Aorta / Q000502:physiology*; D001783:Blood Flow Velocity; D006328:Cardiac Catheterization / Q000379:methods*; D005112:Extracorporeal Circulation; D006352:Heart Ventricles; D018056:Hemorheology; D006801:Humans; D008297:Male; D008955:Models, Cardiovascular; D012039:Regional Blood Flow; D013314:Stress, Mechanical