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Cardiac Surgery Resource Hub

Resources illustrating how MiraQ is used in cardiac surgery to get enhanced surgical insight.

Introduction

Cardiac surgery today, while advanced, relies on separate tools for visualizing anatomy and measuring blood flow. Correlating information between multiple devices like this leaves room for uncertainty. Envision an innovative instrument seamlessly integrating Transit Time Flow Measurement (TTFM) with high-resolution imaging, revolutionizing cardiac procedures by offering enhanced precision and instantaneous insights. The MiraQ enables surgeons to perform with exceptional accuracy, ultimately leading to improved patient outcomes.

MiraQ is the only instrument combining Transit Time Flow Measurement (TTFM) and high-resolution imaging. It empowers cardiac surgeons with precision and real-time insights, elevating patient outcomes in one innovative solution. 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:

  • reduces risk of stroke for the patient.  
  • provides surgeons with a tool to verify graft functionality, revise when needed and optimize the graft strategy during surgery.

These benefits are displayed in the largest multi-center study to combine TTFM and High Frequency Ultrasound Imaging - the REQUEST Study.

The REQUEST Study

REQUEST is the first multicenter study documenting the changes in surgical strategy from the combined use of Transit Time Flow Measurement (TTFM) and High Frequency Ultrasound Imaging (HFUS).

The results showed that 25% of the patient population had one or more surgical procedure changes made. These changes were associated with low rates of in-hospital mortality and major morbidity. Such an impact on surgical strategy shows the importance of performing routine intraoperative quality assessment with TTFM and HFUS during CABG surgery.

REQUEST
Registry for Quality Assessment with Ultrasound Imaging and TTFM in Cardiac Surgery

Global approach

Seven leading cardiac surgery centers from Europe, USA and Canada participated. The study was initially led by Professor Pieter Kappetein of Thorax Erasmus MC, Rotterdam, and later by Coordinating Investigator Professor David Taggart from the University of Oxford.

Inclusion criteria was isolated CABG with a minimum of two grafts. Medistim’s VeriQC™ or MiraQ™ devices were used.

7

Centers

1016

CABG Patients

25%

Change in Surgical Strategy
Diagram: 1016 patient cases, 97% LITA, 40% off-pump, 31% BITA.
Request image illustration with detailed graphics
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Diagram: 1016 patient cases, 97% LITA, 40% off-pump, 31% BITA.
Request image illustration with detailed graphics
Download the 4 page Executive Summary of the REQUEST study

Download the 4 page Executive Summary of the REQUEST study

Download the 4 page Executive Summary of the REQUEST study

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Videos

Enhance your surgical techniques and knowledge with our video gallery, showcasing real-world applications of the MiraQ for improved patient outcomes and surgical efficiency.
Aortic anastomosis on ultrasound imaging
1:35

High-Frequency Ultrasound Imaging of aorta prior to manipulation

See how HFUS Imaging of the Aorta uncovered previously unknown soft plaque. The discovery of the soft plaque led to a change in surgical strategy from On-Pump to Off-Pump CABG
2:28

Graft patency verification with flow measurement and High-Frequency Ultrasound imaging

This video shows how a suboptimal TTFM result followed up by HFUS enabled the surgeon to revise a compromised graft
Color flow imaging showing LIMA in MiraQ screen
1:49

High-Frequency Ultrasound Imaging of conduits

This video illustrates how High-frequency Ultrasound Imaging can be used during surgery to detect unexpected issues with the conduit to avoid complications and improve graft patency
1:21

High-Frequency Ultrasound Imaging of coronary target

See how an intramural LAD was localized by HFUS and facilitated correction of a potential issue with a myocardial bridge
2:06

Graft patency verification with flow measurement and High Frequency Ultrasound Imaging

This video shows how the combination of TTFM and HFUS can be used to help indicate competitive flow due to low grade stenosis in the native artery as the cause of suboptimal graft performance
2:44

High-Frequency Ultrasound Imaging of composite graft

A composite LIMA-graft had a dissection that was discovered by TTFM and HFUS. See how the graft was salvaged by using an additional piece of the already harvested SVG
2:20

Purse string effect identified with High-Frequency Ultrasound Imaging

HFUS of the anastomosis reveals how an over-sutured SVG to PDA causes a purse string effect limiting the flow through the graft

Case Studies

Enhance your surgical techniques and knowledge with Case Studies, showcasing real-world applications of MiraQ for improved patient outcomes and surgical efficiency.

Webinars

Enhance your surgical techniques and knowledge with webinars from leading surgeons presenting their experience with the Medistim technology.​

Publications

Dive into publications implementing the Medistim technology to document improved patient outcomes and surgical efficiency.

Products

MiraQ Cardiac

The Medistim MiraQ™ Cardiac combines ultrasound imaging and Transit Time Flow Measurement (TTFM) in a single system that is…

MiraQ Ultimate

The Medistim MiraQ™ Ultimate combines ultrasound imaging and Transit Time Flow Measurement (TTFM) in a single system that is…

Imaging Probe

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

Flow Probes

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