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Related Experiment Videos

Does routine use of aortic ultrasonography decrease the stroke rate in coronary artery bypass surgery?

A M Duda1, L B Letwin, F P Sutter

  • 1Department of Anesthesiology, Lankenau Hospital and Medical Research Center, Wynnewood, PA.

Journal of Vascular Surgery
|January 1, 1995
PubMed
Summary
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Routine intraoperative ultrasonography of the aorta during coronary artery bypass graft (CABG) surgery significantly reduces stroke incidence. This imaging technique allows for targeted modifications in surgical approach, enhancing patient safety and outcomes.

Area of Science:

  • Cardiovascular Surgery
  • Medical Imaging
  • Neurology

Background:

  • Coronary artery bypass graft (CABG) surgery carries a risk of stroke due to potential embolization from aortic atherosclerosis.
  • Traditional methods of assessing the aorta, such as inspection and palpation, may not detect all significant atherosclerotic disease.

Purpose of the Study:

  • To evaluate the effectiveness of routine intraoperative surface aortic ultrasonography in reducing stroke rates among patients undergoing CABG surgery.

Main Methods:

  • A prospective study comparing 195 patients who underwent CABG with intraoperative aortic ultrasonography (study group) against 164 patients assessed by conventional methods (control group).
  • Ultrasonography identified aortic atherosclerotic disease, prompting modifications in surgical techniques, including aortic cannulation and cross-clamping strategies.

Related Experiment Videos

  • Outcomes, specifically stroke incidence and mortality, were compared between the study and control groups.

    • Main Results:

    • No strokes occurred in the study group (n=195) following ultrasonography-guided technique modifications, compared to a 3.0% stroke rate in the control group (n=164).
    • Significant aortic disease was detected in 2.0% of the control group, while ultrasonography identified disease in 10% of the study group, leading to procedural changes.
    • Operative mortality rates were comparable between the groups (2.6% in the study group vs. 3.6% in the control group).

    Conclusions:

    • Intraoperative surface aortic ultrasonography is an effective tool for identifying unsuspected atherosclerotic disease of the ascending aorta.
    • Utilizing ultrasonography findings to guide simple modifications in surgical technique significantly reduces the stroke rate in CABG surgery.
    • This imaging modality enhances patient safety by mitigating embolic stroke risk during CABG procedures.