Relação entre o índice de resistência vascular e o sucesso hemodinâmico de revascularizações distais dos membros inferiores
Vascular resistance index and the immediate hemodynamic success of lower limb distal artery revascularization
Rebecca Paes de Andrade Souza Caldas; Esdras Marques Lins; Gabriela de Oliveira Buril; Fernanda Appolônio Rocha; Emmanuelle Tenório Albuquerque Godoi Berenguer de Barros e Silva; Larissa Barbosa de Andrade; Camilla Lins da Cunha Cavalcanti; Guilherme Barros Alves de Carvalho
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Abstract
Background: Revascularization surgery is used to attempt to restore blood flow to the foot in patients with critical ischemia (CI) caused by peripheral arterial occlusive disease of the lower limbs (LL). Ultrasonography with Doppler (USD) SAH emerged in recent years as a highly valuable method for planning this surgical intervention
Objectives: To evaluate the relationship between the resistance index (RI), measured with USD, and immediate hemodynamic success of LL revascularization surgery in patients with CI.
Methods: The study design was a prospective cohort assessing 46 patients with LL CLI who underwent operations to perform infrainguinal revascularization by angioplasty or bypass from August 2019 to February 2022. All patients underwent preoperative clinical vascular assessment with USD including measurement of the RI of distal LL arteries, LL arteriography, and measurement of the ankle-brachial index (ABI). All patients had their ABI measured again in the immediate postoperative period.
Results: Forty-six patients were assessed, 25 (54.3%) of whom were male. Age varied from 32 to 89 years (mean: 67.83). Hemodynamic success was assessed by comparison of preoperative and postoperative ABI, showing that hemodynamic success was achieved in 31 (67.4%) patients after revascularization surgery (ABI increased by 0.15 or more). A positive correlation (p ≤ 0.05) was observed between the RI of the distal revascularized LL artery and immediate hemodynamic success assessed by ABI (lower RI and hemodynamic success).
Conclusions: This study observed a positive correlation between the resistance index of the distal artery and immediate hemodynamic success of lower limb revascularizations, as assessed by the ankle-brachial index, so that the lower the RI the greater the hemodynamic success achieved.
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References
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Submitted date:
09/13/2023
Accepted date:
12/11/2023
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