健常犬における心エコー・ドプラ波形の形状に関する検討  [in Japanese] Characteristics of the Ultrasound Pulsed Doppler Waveforms in Dogs  [in Japanese]

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Author(s)

    • 上原 勇作 UEHARA Yusaku
    • 麻布大学獣医学部外科学第一教室 Department of Veterinary Surgery, School of Veterinary Medicine, Azabu University
    • 河野 敏彦 KAWANO Toshihiko
    • (株)日立メディコ超音波事業部設計部 Ultrasound Design Depertment, Ultrasound Division, Hitachi Medical Corporation

Abstract

犬における超音波パルスドプラ波形の形状的特徴を知る目的から,2歳以下の健常犬35頭を用い,左右心室の流入路および流出路の血流ドプラ波形の計測を行った。流入路波形に関しては7種,流出路波形に関しては3種の計測を行い,その計測値を処理し,合成波形を得た。その結果,左室流入路の血流速波形はM型を示し,拡張前期の第1ピークは常に後期の第2ピークより高い峰を形成した。左室流出路の血流速波形はVおよびレ字の中間型を示し,ピークは収縮期前期に位置した。右室流入路の血流速波形はM字型であったが第1,第2ピークの波高ならびにその高低差も少なく,波形ピークの逆転率も40%に見られた。右室流出路の血流速波形はV字型となった。そのピークは,収縮前期から中期に位置した。この結果,犬におけるドプラ波形の形状は,ヒトのドプラ波形の形状とほほ同じであることが判明した。このことは,超音波ドプラ法を小動物に応用するに際して,すでに医学で報告されている心機能評価への応用が,犬でも可能であることが示唆された。

In order to clarify the characteristics of the ultrasound pulsed Doppler waveforms in dogs, we measured the blood flow Doppler waveforms at the inflow tracts of the right and left ventricle in 35 clinically healthy mongrel dogs with a age of 2 years or less. Seven measurements were performed for the inflow tract and three measurements for the outflow tract. The values were then processed, and a composite waveform was obtained. The results showed that the blood flow velocity waveform of the left ventricular inflow tract is M-shaped, and that the early diastolic peak, peak 1, is always higher than the late diastolic peak, peak 2.<BR>The blood flow velocity waveform of the left ventricular outflow tract was halfway between a V-shape and the shape of a check mark (∨), and the peak was located in the early systole. The blood flow velocity waveform of the right ventricular inflow tract was M-shaped, but both the wave height of peaks 1 and 2 and the differences between their height of peaks were small, and the waveform peak inversion rate was 40%. The blood flow velocity waveform of the right ventricular outflow tract was V-shaped. Its peak was located between early and mid-systole. These findings demonstrated that the characteristics of the Doppler waveforms in dogs are basically as the same as in humans.

Journal

  • Advances in Animal Cardiology

    Advances in Animal Cardiology 29(1), 8-13, 1996-06

    Japanese Society of Veterinary Cardiology

References:  15

Codes

  • NII Article ID (NAID)
    10008286920
  • NII NACSIS-CAT ID (NCID)
    AN10192925
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    09106537
  • NDL Article ID
    3995998
  • NDL Source Classification
    ZR22(科学技術--農林水産--畜産)
  • NDL Call No.
    Z18-1508
  • Data Source
    CJP  NDL  J-STAGE  JASI 
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