JaLCDOI 10.18926/AMO/30538
フルテキストURL fulltext.pdf
著者 Saito, Daiji| Kusachi, Shozo| Nishiyama, Osamu| Yasuhara, koichiro| Yoshida, Hidenori| Haraoka, Shoichi|
抄録 <p>The effects of changes in distal resistance on stenotic resistance were studied in vitro. Physiological saline was passed through the left carotid artery obtained from the dog, flexible rubber tubing, or through solid polyethylene tubing with a constant perfusion pressure or with a constant flow rate. Various stenotic resistances were established using a screw type constrictor and the distal resistance was varied by allowing physiological saline to pass through either a 23 gauge hypodermic needle (high peripheral resistance) or 23 and 20 gauge needles (low peripheral resistance ). For arteries with anatomically fixed stenosis, the calculated resistance was increased in association with reduction of the distal resistance. The stenotic resistance in the flexible rubber tubing changed in the same manner as that of the carotid artery, while the solid polyethylene tubing showed no significant stenotic resistance changes due to altering the distal resistance. These findings suggest that the stenotic resistance change of the artery correlates with the elasticity of the vessel wall and also indicate that resistance values were of little usefulness for evaluating the effects of vasodilating stimuli on the vessel segment with a significant stenosis.</p>
キーワード stenotic resistance constant perfusion pressure constant flow rate.
Amo Type Article
発行日 1980-04
出版物タイトル Acta Medica Okayama
出版者 Okayama University Medical School
開始ページ 109
終了ページ 115
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 6450512
Web of Science KeyUT A1980JY15600004