Busato CR, Utrabo CAL, Lipinski LC, Dreweck MDO, Fernandes ACV, Sviercoski G. Experimental, comparative, duplex mapping study of arterial flow distribution in ischemia and reperfusion by retrograde circulation.
J Vasc Bras 2020;
19:e20190052. [PMID:
34178051 PMCID:
PMC8202190 DOI:
10.1590/1677-5449.190052]
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Abstract
Treatment options for critical lower limb ischemia in the absence of the distal bed
are limited. Diverting blood flow in a retrograde direction through the venous
circulation is one alternative option that is supported by evidence from several
published articles. Duplex scanning was used to compare the distribution of arterial
flow in hind limbs of pigs maintained in physiological circulation to contralateral
limbs subjected to ischemia and reperfusion by retrograde circulation. Flow in limbs
with physiological and retrograde circulation was evaluated by duplex scanning with
analysis of Peak Systolic Velocity (PSV), End Diastolic Velocity (EDV), and the
Resistivity Index (RI) for selected arteries. This comparative analysis of
extremities maintained in physiological circulation in relation to those subjected to
ischemia and reperfusion by retrograde circulation showed, via duplex scanning, that
changes in spectral wave patterns and hemodynamic variables are satisfactory
indicators and suggest good distribution of distal blood flow.
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