Hydrodynamic evaluation of aortic cardiopulmonary bypass cannulae using particle image velocimetry

C. I. McDonald, E. Bolle, H. F. Lang, C. Ribolzi, B. Thomson, G. D. Tansley, J. F. Fraser, S. D. Gregory

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

The high velocity jet from aortic arterial cannulae used during cardiopulmonary bypass potentially causes a "sandblasting" injury to the aorta, increasing the possibility of embolisation of atheromatous plaque. We investigated a range of commonly available dispersion and non-dispersion cannulae, using particle image velocimetry. The maximum velocity of the exit jet was assessed 20 and 40 mm from the cannula tip at flow rates of 3 and 5 L/min. The dispersion cannulae had lower maximum velocities compared to the non-dispersion cannulae. Dispersion cannulae had fan-shaped exit profiles and maximum velocities ranged from 0.63 to 1.52 m/s when measured at 20 mm and 5 L/min. Non-dispersion cannulae had maximum velocities ranging from 1.52 to 3.06 m/s at 20 mm and 5 L/min, with corresponding narrow velocity profiles. This study highlights the importance of understanding the hydrodynamic performance of these cannulae as it may help in selecting the most appropriate cannula to minimize the risk of thromboembolic events or aortic injury.

Original languageEnglish
Pages (from-to)78-86
Number of pages9
JournalPerfusion
Volume31
Issue number1
DOIs
Publication statusPublished - 1 Jan 2016
Externally publishedYes

Keywords

  • cannula
  • cardiopulmonary bypass
  • dispersion cannula
  • hydrodynamic performance
  • particle image velocimetry

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