Dissected LIMA: detected by use of HFUS


This case illustrates how High-frequency Ultrasound Imaging (HFUS) can be used during surgery to detect unexpected issues with the conduit to avoid complications and improve graft patency.


In this case from the REQUEST Study, the surgeon scanned the conduits in-situ prior to grafting and discovered the issue that led to a change in the surgical plan. The plan was to perform an On-pump CABG with three targets: LIMA-LAD and SVG sequential to OM and PDA.

However, imaging of the LIMA in-situ showed a dissection of the LIMA, enabling the surgeons to change the plan from LIMA-LAD to using SVG both to OM, PDA and LAD.

Technology used

Medistim MiraQ Cardiac System, Medistim Transit Time Flow Measurement probe and Medistim L15 High-frequency Ultrasound Imaging Probe

Patient Information

81-year-old male, 165 cm, 73 kg, BMI 26.8, NSTEMI, Unstable angina with 3-v and LM disease.


Reference: Taggart et al. JTCVS 2020;159:1283-92. https://www.jtcvs.org/article/S0022-5223(19)31581-8/fulltext

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