| Evaluation of Peripheral
Occlusive Arterial Diseases by Color Duplex Sonography |
(Department of Cardiovascular Surgery, Kobe Rousai
Hospital, Kobe, Japan and Department of Surgery, Division II,
Kobe University School of Medicine＊, Kobe, Japan)
| Ikuro Kitano |
Takaki Sugimoto＊ |
Masayoshi Okada＊ |
|
To evaluate peripheral occlusive
diseases quantitatively, we performed color duplex sonography.
Between July 1996 and July 1998, we examined 68 limbs of 40 patients
using color duplex sonography in addition to intraarterial digital
subtraction angiography for evaluation of peripheral arterial
occlusive disease. We classified the wave form of blood flow
into four types (Type I-IV). Furthermore we measured the systolic
velocities of the dorsal pedial and the posterior tibial arteries
as well as the brachial artery. We also calculated the flow volume,
and the ratio of systolic velocities and flow volume of lower
to upper extremity (AVI, AFI). The waveform was significantly
higher in Fontaine class III and IV, and showed remarkable improvement
after arterial reconstruction. The value of AVI as well as AFI
showed lower in Fontaine class I, II, III, and IV in order. In
four limbs classified as Fontaine class II or more with normal
ankle pressure index, the values of AVI were rather lower. On
the other hand, three limbs with normal values of peak AVI (＞0.9)
and lower API (＜0.75) were in Fontaine class I. The types of
waveform correlated with clinical symptoms, and showed a remarkable
regression after arterial reconstruction. The new AVI and AFI
values had better correlation with clinical symptoms than API.
Jpn. J. Cardiovasc. Surg. 29: 72-78 (2000) |
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