Fem-pop bypass: Quality control with TTFM, HFUS and PW Doppler

This case example shows a routine fem-pop case where the surgeon assessed the quality of the bypass procedure using all 3 measurement technologies provided by the MiraQ system; High-Frequency Ultrasound (HFUS), Transit Time Flow Measurement (TTFM) and PW Doppler measurements.

Interoperative completion control

Image 1 shows a clear lumen and error-free proximal anastomosis. The flow was assessed using both TTFM and PW Doppler. The measurement shows acceptable flow volume with low PI, as well as a satisfactory flow velocity with corresponding Doppler spectrum at the proximal anastomosis, all indicating a patent graft. As seen in Image 2, TTFM of the proximal anastomosis during the case displayed a satisfactory flow of 328 mL/min with a repetitive corresponding flow curve.

Case attachments

Click images below to view.
Comparison of imaging with TTFM and imaging with doppler

HFUS, TTFM and PW Doppler of proximal anastomosis

HFUS, TTFM and PW Doppler of proximal anastomosis

Proximal anastomosis TTFM graph

TTFM of proximal anastomosis

TTFM of proximal anastomosis

Comparison of imaging with TTFM and imaging with doppler
Image 1

Image 1

Proximal anastomosis TTFM graph
Image 2

Image 2

Reference

Intraoperative quality control with transit time flow measurement

Vikatmaa P and Albäck A. Intraoperative quality control with transit time flow measurement. Gefässchirurgie 2018; 23:580-585.

Technology used

Medistim MiraQ™ Vascular System with Vascular TTFM Probes and L15 High-Frequency Ultrasound Probe.

Comparison of imaging with TTFM and imaging with doppler

HFUS, TTFM and PW Doppler of proximal anastomosis

HFUS, TTFM and PW Doppler of proximal anastomosis

Proximal anastomosis TTFM graph

TTFM of proximal anastomosis

TTFM of proximal anastomosis