Intraoperative electromagnetic flowmeter measurements in coronary artery bypass grafts

Louagie, Yves; Haxhe, Jean-Paul; Buche, Michel; Schoevaerdts, Jean-Claude

doi:10.1016/0003-4975(94)90997-0

Cited by 71 publications

(24 citation statements)

References 17 publications

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“…14, 15 The inadequate flow through ITA grafts is explained by their smaller diameter compared with those of saphenous vein grafts. 16,17 Thus, the combined use of ITA and a b Fig. 3.…”

Section: Discussionmentioning

confidence: 98%

Diffuse myocardial infarction caused by isolated bilateral coronary ostial stenoses in a young woman: Report of a case

et al. 1999

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A young Japanese woman who appeared to be free from any coronary risk factors was admitted to a local hospital with chest pain. Serological tests showed no evidence of inflammation; however, an electrocardiogram revealed diffuse myocardial ischemia and a coronary angiogram demonstrated isolated bilateral coronary ostial stenoses. Moreover, her serum creatine phosphokinase level was high. On the day following admission, the patient developed severe cardiogenic shock, and she was transferred to our hospital where emergency coronary artery bypass grafting with the saphenous veins was performed using retrograde tepid blood cardioplegia. Recovery of cardiac function was immediate and her postoperative course was uneventful. We suspect that fibromuscular dysplasia was the most likely cause of the ostial stenoses in this patient.

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“…14, 15 The inadequate flow through ITA grafts is explained by their smaller diameter compared with those of saphenous vein grafts. 16,17 Thus, the combined use of ITA and a b Fig. 3.…”

Section: Discussionmentioning

confidence: 98%

Diffuse myocardial infarction caused by isolated bilateral coronary ostial stenoses in a young woman: Report of a case

et al. 1999

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“…14 Although graft patency assessment techniques such as thermal angiography, Doppler fl ow measurement, and electromagnetic fl ow measurement have been attempted in the operating room, such techniques generally do not provide highfi delity angiographic information and have not gained implementation in routine surgical practice. 5,9,[15][16][17] Our previous article noted that using FFT analysis the waveform of TTFM was useful for estimating the quality of grafts. 13 In this study, we indicated that the waveform of the occluded grafts had more high-frequency components than did the waveform of patent grafts.…”

Section: Discussionmentioning

confidence: 99%

“…3,4 Consequently, several techniques have been employed to assess intraoperative graft patency. These have included electromagnetic study, 5 transit-time fl owmetry (TTFM), 6 Doppler velocity waveform, 7 epicardial echocardiography, 8 and conventional 9 and thermal 10 coronary angiography techniques. All techniques have limitations and frequently provide indirect or poor-resolution defi nition of grafts and fl ow.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the waveforms of transit-time flowmetry and intraoperative fluorescence imaging for assessing coronary artery bypass graft patency

Hatada

Okamura

Kaneko

et al. 2011

Gen Thorac Cardiovasc Surg

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“…Die Flußraten der einzelnen Bypassgefäße zeigten jedoch sowohl beim mittleren als auch beim maximalen Fluß in beiden Gruppen eine große Streuung, wie es auch von anderen Autoren beschrieben wurde (2,6,13 …”

Section: Patienten Und Methodeunclassified

Intraoperative Flußmessung koronarer Bypassgefäße mit der Ultraschall-Transit-Zeit-Methode

Voigtländer¹,

Dahm²,

Kreitner³

et al. 1999

Z Kardiol

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The aim of the study was to compare the mean and maximum flow and the flow pattern of coronary vein grafts (SVG) supplying target vessels of the inferior and lateral wall with internal mammary (IMA) grafts to the left anterior descending artery (LAD). In 21 patients 25 bypass grafts (13/25 SVG, 12/25 IMA) were investigated. Using the transit time ultrasound method, flow was measured every 5 ms and the flow data of 60 s were acquired. The flow pattern showed significant differences between both graft types during their cycle. IMA grafts showed only one peak occurring after 22.1+/-12.3% and the second after 63.4+/-15.5% of their cycle. The mean flow was not different in both graft types (IMA: 45.3+/-27.0 ml/min and SVG: 41.8+/-26.7 ml/min, p = n. s.) as it was the case for the maximum flow (IMS: 98. 4+/-45.2 ml/min and SVG: 75.7+/-55.4 ml/min, p = n. s.). In conclusion, there is a different flow pattern for both graft types concerning the number and the occurrence of flow-peaks in the bypass cycle. The mean and peak flow showed no significant difference.

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Intraoperative electromagnetic flowmeter measurements in coronary artery bypass grafts

Cited by 71 publications

References 17 publications

Diffuse myocardial infarction caused by isolated bilateral coronary ostial stenoses in a young woman: Report of a case

Diffuse myocardial infarction caused by isolated bilateral coronary ostial stenoses in a young woman: Report of a case

Comparison of the waveforms of transit-time flowmetry and intraoperative fluorescence imaging for assessing coronary artery bypass graft patency

Intraoperative Flußmessung koronarer Bypassgefäße mit der Ultraschall-Transit-Zeit-Methode

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