By Edward I. Bluth
Ultrasonography in Vascular illnesses: a pragmatic method of scientific difficulties is a concise advisor to the newest medical functions of ultrasound in diagnosing ...
summary: Ultrasonography in Vascular illnesses: a realistic method of scientific difficulties is a concise advisor to the most recent scientific purposes of ultrasound in diagnosing
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Extra info for Ultrasonography in vascular diseases: a practical approach to clinical problems
Occasionally, this branch will be visualized in the upper thigh and should not be confused with a PSA neck, a patent needle track, or the arterial limb of an AVF. This vessel does have a relatively low-resistance waveform somewhat atypical of the Figure 3–17 A transverse scan of the right groin in a postcatheterization patient demonstrates partial thrombosis (arrows) of the right common femoral vein (V). qxd 40 8/16/07 2:13 PM Page 40 Ultrasonography in Vascular Diseases A B Figure 3–18 (A) Hyperemic lymph nodes simulating a pseudoaneurysm (arrows).
Note the ﬂow void between the stent and the lumen due to ﬁbrointimal hyperplasia. A stenosis results that is moderately severe by visual assessment. (B) The prestenotic Doppler waveforms are monophasic due to diffuse arterial disease with stenosis proximal to the stent. Peak systolic velocity (PckV) is 88 cm/s. (C) Within the stent stenosis, PckV is slightly more than doubled, at 184 cm/s, indicating hemodynamic signiﬁcance, but not critical narrowing. (D) Doppler waveforms distal to the stenosis are slightly more damped and lower in velocity (PckV 57 cm/s) than those recorded proximal to the stenosis, suggesting that this stenosis is affecting blood ﬂow.
E) The common femoral vein above the level of the AVF demonstrates normal respiratory phase change (arrow) without evidence of high-velocity pulsatile ﬂow. qxd 8/16/07 2:13 PM Page 39 3 39 Pulsatile Groin Mass in the Postcatheterization Patient A B Figure 3–16 (A) Transverse color Doppler ultrasound of the left groin in a patient with a new bruit status postcatheterization demonstrates a hypoechoic mass in the common femoral artery (A), which obliterates roughly two thirds of the vascular lumen.
Ultrasonography in vascular diseases: a practical approach to clinical problems by Edward I. Bluth