Page 172 - Libro 2

152
PART 3 — PERIPHERAL ARTERIAL
Critical Thinking Questions
1. You are asked to scan the dorsalis pedis artery in a patient prior to a bypass graft. What are two technical elements of the examination that should be taken into consideration?
2. What is the most significant pitfall in imaging the lower extremity arteries, how can it be overcome, and why is it important to pay attention to this in the region of a distal anastomosis?
3. In addition to Vr calculated from the peak systolic velocity, what is another component of spectral imaging that can help identify a stenosis and what changes are expected?
REFERENCES
1. Sensier Y, Hartshorne T, Thrush A, et al. A prospective comparison of lower limb colour- coded Duplex scanning with arteriography. Eur J Vasc Endovasc Surg. 1996;11(2):170–175.
2. Ligush J Jr, Reavis SW, Preisser JS, et al. Duplex ultrasound scanning defines operative strategies for patients with limb-threatening ischemia. J Vasc Surg. 1998;28(3):482–490.
3. Sensier Y, Fishwick G, Owen R, et al. A comparison between colour duplex ultrasonogra-
phy and arteriography for imaging infrapopliteal arterial lesions. Eur J Vasc Endovasc Surg.
1998;15(1):44–50.
4. London NJ, Sensier Y, Hartshorne T. Can lower limb ultrasonography replace arteriography?
Vasc Med. 1996;1(2):115–119.
5. Polak JF, Karmel MI, Mannick JA, et al. Determination of the extent of lower-extremity
peripheral arterial disease with color-assisted duplex sonography: comparison with angio-
graphy. AJR Am J Roentgenol. 1990;155(5):1085–1089.
6. Moneta GL, Yeager RA, Antonovic R, et al. Accuracy of lower extremity arterial duplex map-
ping. J Vasc Surg. 1992;15(2):275–283.
7. Wilson YG, George JK, Wilkins DC, et al. Duplex assessment of run-off before femorocrural
reconstruction. Br J Surg. 1997;84(10):1360–1363.
8. Karacagil S, Lofberg AM, Granbo A, et al. Value of duplex scanning in evaluation of crural
and foot arteries in limbs with severe lower limb ischaemia: a prospective comparison with
angiography. Eur J Vasc Endovasc Surg. 1996;12:300–303.
9. Koelemay MJ, Legemate DA, de Vos H, et al. Can cruropedal colour duplex scanning and
pulse generated run-off replace angiography in candidates for distal bypass surgery. Eur J
Vasc Endovasc Surg. 1998;16(1):13–18.
10. Cossman DV, Ellison JE, Wagner WH, et al. Comparison of contrast arteriography to ar-
terial mapping with color-flow duplex imaging in the lower extremities. J Vasc Surg.
1989;10(5):522–528.
11. Larch E, Minar E, Ahmadi R, et al. Value of color duplex sonography for evaluation of tibio-
peroneal arteries in patients with femoropopliteal obstruction: a prospective comparison with
anterograde intraarterial digital subtraction angiography. J Vasc Surg. 1997;25(4):629–636.
12. Lai DT, Huber D, Glasson R, et al. Colour duplex ultrasonography versus angiography in the
diagnosis of lower-extremity arterial disease. Cardiovasc Surg. 1996;4(3):384–388.
13. Wain RA, Berdejo GL, Delvalle WN, et al. Can duplex scan arterial mapping replace con- trast arteriography as the test of choice before infrainguinal revascularization? J Vasc Surg.
1999;29(1):100–107.
14. Mazzariol F, Ascher E, Salles-Cunha SX, et al. Values and limitations of duplex ultrasonog-
raphy as the sole imaging method of preoperative evaluation for popliteal and infrapopliteal
bypasses. Ann Vasc Surg. 1999;13(1):1–10.
15. Ascher E, Mazzariol F, Hingorani A, et al. The use of duplex ultrasound arterial mapping
as an alternative to conventional arteriography for primary and secondary infrapopliteal
bypasses. Am J Surg. 1999;178(2):162–165.
16. Mazzariol F, Ascher E, Hingorani A, et al. Lower-extremity revascularization without preop-
erative contrast arteriography in 185 cases: lessons learned with duplex ultrasound arterial mapping. Eur J Vasc Endovasc Surg. 2000;19(5):509–515.