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Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
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Evaluation of a Novel Laser-assisted Coronary Anastomotic Connector - the Trinity Clip - in a Porcine Off-pump Bypass Model
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Microemboli detection on extracorporeal bypass circuits.

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  • 1Luna Innovations Incorporated, Hampton, VA, USA. lyncht@lunainnovations.com

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Gaseous microembolization during cardiopulmonary bypass (CPB) is linked to adverse brain outcomes. Monitoring for gaseous microemboli (GME) can reduce embolic load, with new ultrasonic imaging improving detection and quantification.

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Area of Science:

  • Cardiovascular Surgery
  • Neurology
  • Biomedical Engineering

Background:

  • Gaseous microembolization during cardiopulmonary bypass (CPB) is associated with negative cerebral outcomes.
  • Quantifying this link is challenging due to factors like bubble size, location, and patient comorbidities.
  • Studies show significant differences in cerebral emboli counts between patients with and without stroke or major cardiac complications.

Purpose of the Study:

  • To review methods for monitoring and reducing gaseous microemboli (GME) during CPB.
  • To compare different ultrasonic detection technologies for GME.
  • To highlight the advantages of fixed-beam ultrasonic imaging for quantifying embolic load.

Main Methods:

  • Review of case reports and laboratory studies on GME monitoring and reduction techniques.
  • Analysis of methods to improve CPB circuit design and priming procedures.
  • Comparison of ultrasonic detection technologies: through-transmission gross air detectors, Doppler ultrasound, and fixed-beam ultrasonic imaging.

Main Results:

  • Various strategies can reduce the embolic load delivered during CPB.
  • Different ultrasonic detection methods yield varying GME counts.
  • Fixed-beam ultrasonic imaging offers improved monitoring, measurement, and quantification of embolic load.

Conclusions:

  • Effective monitoring and reduction of GME during CPB are crucial for mitigating adverse cerebral outcomes.
  • Fixed-beam ultrasonic imaging represents a significant advancement in accurately assessing embolic load during CPB.
  • Understanding variations in detection technologies is key to interpreting GME data.