Summary
For the experimental studies on chronic coronary stenosis, an ameroid constrictor was modified to facilitate serial cineangiographic evaluation of the degree of arterial narrowing. A radiolucent plastic ring instead of a stainless frame was used to prevent outward swelling of the ameroid material.
Coronary cineangiography was performed 10, 20 and 30 days after the implantation of the modified ameroid constrictor on the left circumflex coronary artery (LCX), which could prove the progressive coronary stenosis of 57, 78 and 88% on the respective days. Collateral channels from the anterior descending branch of the left coronary artery to the LCX were demonstrated angiographically in 5 out of the 6 dogs on the 30th day.
Zusammenfassung
Für das experimentelle Studium chronischer Koronarstenosen wurde ein Ameroid-Konstriktor modifiziert, um die Beurteilung des Einengungsgrades aufgrund cineangiographischer Serienuntersuchungen zu erleichtern. Um eine Schwellung des Ameroid-Materials nach außen zu verhindern, wurde — anstelle eines Metallrahmens — ein strahlendruchlässiger Plastikring benutzt.
10, 20 und 30 Tage nach der Implantation des Ameroid-Konstriktors am R. circumflexus der linken Koronararterie wurde eine Koronarangiographie vorgenommen, wobei an den betreffenden Tagen eine fortschreitente Koronareinengung von 57, 78 bzw. 88% nachgewiesen wurde. Bei 5 von 6 Hunden ließen sich am 30. Tag Kollateral-Gefäße vom R. interventr. ant. zum R. circumflexus der linken Koronararterie demonstrieren.
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With 4 figures and 1 table
This project was supported in parts by grants from Education Ministry of Japan (No. 344044) and the Japan Heart Foundation Research for 1978. Part of this study was presented at the Annual Meeting of Japanese College of Argiology, Tokyo 1978, Japan.
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Inou, T., Tomoike, T., Watanabe, K. et al. A newly developed X-ray transparent ameroid constrictor for study on progression of gradual coronary stenosis. Basic Res Cardiol 75, 537–543 (1980). https://doi.org/10.1007/BF01907835
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DOI: https://doi.org/10.1007/BF01907835