Cardiac Surgery

Perform cardiac imaging, measure blood flow and receive immediate feedback on how well a graft is functioning.

Intraoperative surgical guidance and quality assessment with ultrasonic imaging and blood flow measurement during cardiac surgery, reduce risk of stroke for the patient and provide the surgeon with a tool for verifying graft functionality, revise when needed and optimize the graft strategy during surgery.

Epicardial ultrasound imaging provides important information about coronary artery stenosis; site, degree and shape of the coronary lesion.

Combining epicardial ultrasound imaging and TTFM enables the surgeon to perform a prompt and accurate revision of the graft. Technical imperfections of an anastomosis can be immediately corrected in the operating room.

Epiaortic imaging provides a sensitive and direct diagnosis of aortic disease. Evaluation of the ascending aorta prior to any manipulation, may lead to modifications of the surgical strategy and thus contribute towards reduced rates of major adverse cardiac and cerebrovascular events (MACCE).

Publication
Link
Guidelines overview
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Taggart DP, Thuijs DJFM, Di GIammarco G, Puskas JD, Wendt D, Trachiotis GD, Kieser TM, Kappetein AP and Head SJ. (2020) , The Journal of Thoracic and Cardiovascular Surgery:
Intraoperative TTFM and HFUS Assessment in CABG - REQUEST
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Kim K-B, Choi JW, Oh SJ, Hwang HY, Kim SJ, Choi J-S and Lim C (2020), The Annals of Thoracic Surgery:
Twenty-year experience with off-pump coronary artery bypass grafting and early postoperative angiography
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Di Giammarco G and Marinelli D (2018), Indian Journal of Thoracic Cardiovascular Surgery:
Intraoperative graft assessment and imaging of native coronary vessels
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Kaya U, Colak A, Becit N, Ceviz M and Kocak H. (2018). , Turkish Journal of Thoracic and Cardiovascular Surgery:
Intraoperative transit time flow measurement in on-pump coronary artery bypass graft surgery: Single center experience
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Taggart DP and Kieser TM (2018), Journal of Cardiac Surgery:
Current status of intra-operative graft assessment: Should it be the standard of care for coronary artery bypass graft surgery?
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Di Giammarco, G., Marinelli D, Foschi M and Di Mauro M (2017), Journal of cardiovascular Medicine:
Intraoperative graft verification in coronary surgery
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Kieser TM (2017), Current Opinion in Cardiology:
Graft quality verification in coronary artery bypass graft surgery: how, when and why?
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Amin S and Pincho-Gomes A-C (2016), Annals of Thoracic Surgery:
Relationship of Intraoperative Transit Time Flow Measurement to Angiographic Graft Patency at Follow-up
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Lobo HG Filho, Lobo JG Filho, Silva BG, deSouza CS, Montenegro ML, de Azevedo Leitao MC and Jamacuru FV (2016), Brazilian Journal of Cardiovascular Surgery:
Intraoperative Analysis of Flow Dynamics in Arteriovenous Composite Y Grafts
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Oshima H, Tokuda Y, Araki Y, Ishii H, Murohara T, Ozaki Y and Usui A (2016), Interactive CardioVascular and Thoracic Surgery:
Predictors of Early Graft Failure After Coronary Artery Bypass Grafting for Chronic Total Occlusion
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Banjanovic B, Bergsland J, Mujanovic E and Kabil E (2015), Innovations:
Importance of Full-Length Scan of Arterial Grafts in Coronary Artery Bypass Grafting
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Watanabe T, Arai H, Oi K, Hachimaru T, Kuroki H, Fujiwara T and Mizuno T (2013), Circulation:
Detection of Internal Thoracic Artery Dissection at Coronary Anastomosis Using Intraoperative 15 Mhz High-Frequency Epicardial Ultrasound
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Hayakawa M, Asai T, Kinoshita T, and Shiraishi S (2013), Innovations:
Target Vessel Detection by Epicardial Ultrasound in Off-Pump Coronary Bypass Grafting
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Kamler M, Tossios P, Thielmann M, Wendt D, Osswald B and Jacob H (2010), Society for Thoracic and Cardiovascular Surgery:
Intraoperative epiaortic ultrasonography to guide the surgical approach
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Kieser TM, Rose S, Kowalewski R and Belenkie I (2010), Journal of Cardio-thoracic Surgery:
Transit-time flow predicts outcomes in coronary artery bypass graft patients: a series of 1000 consecutive arterial grafts
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Nordgaard HB, Vitale N, Astudillo R, Renzulli A, Romundstad P and Haaverstad R (2010), European Journal of Cardio-thoracic Surgery:
Pulsatility index variations using two different transit-time flowmeters in coronary artery bypass surgery
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Herman C, Sullivan JA, Buth K and Legare J-F (2008), Interactive CardioVascular and Thoracic Surgery:
Intraoperative graft flow measurements during coronary artery bypass surgery predict in-hospital outcomes
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Becit N, Erkut B, Ceviz M, Unlu Y, Colak A and Kocak H (2007), European Journal of Cardiothoracic Surgery:
The impact of intraoperative transit time flow measurement on the results of on-pump coronary surgery
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Bauer SF, Bauer K, Ennker C, Rosendahl U and Ennker J (2005), Thoracic Cardiac Surgeon:
Intraoperative Bypass Flow Measurement Reduces the Incidence of Post-operative Ventricular Fibrillation and Myocardial Markers After Coronary Revascularization
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D'Ancona G, Karamanoukian HL, Ricci HL, Schmid S, Bergsland J and Salerno TA (2000), European Journal of Cardiothoracic Surgery:
Graft Revision after transit time flow measurement in off-pump coronary artery bypass grafting
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Products

The Medistim MiraQ™ Cardiac combines ultrasound imaging and transit time flow measurement (TTFM) in a single system that is… Read more

Imaging Probe

 Surgical guidance and quality assessment Reduce the risk of early graft failure, stroke, myocardial infarction or recurrent angina – and… Read more

Flow Probes

 Medistim’s flow probes are based on reliable TransitTime Flow Measurement (TTFM). Together with the Medistim’s systems, they provide fast,… Read more