Key result
Non-invasive Doppler evaluation of left internal mammary artery grafts showed that diastolic/systolic velocity ratios were significantly smaller in patients with significant graft stenosis (P<0.01).
Why the study?
Can a non-invasive Doppler technique through the supraclavicular approach accurately detect flow velocity patterns and patency in left internal mammary artery grafts compared to coronary angiography?
Population
37 patients with a left internal mammary artery graft to the left anterior descending artery, divided into…
Comparison
Non-invasive Doppler technique through the… vs Postoperative coronary angiographic studies.
Design
Cross-sectional
Authors
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Diastolic/systolic velocity ratios were associated with LIMA stenosis; leaves open the utility of supraclavicular Doppler for graft surveillance pending prospective validation.
Observational (n=37)
Can a non-invasive Doppler technique through the supraclavicular approach accurately detect flow velocity patterns and patency in left internal mammary artery grafts compared to coronary angiography?
p-value: p=<0.01
Non-invasive Doppler ultrasound can detect distinct flow velocity patterns that differentiate between patent and stenosed left internal mammary artery grafts.
Nasu et al. (1994) conducted an observational in Left internal mammary artery graft to the left anterior descending artery (n=37). Non-invasive Doppler technique vs. Different degrees of stenosis was evaluated on Flow velocity pattern in the left internal mammary artery graft (p=<0.01). Non-invasive Doppler evaluation of left internal mammary artery grafts showed that diastolic/systolic velocity ratios were significantly smaller in patients with significant graft stenosis (P<0.01).
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