Why the study?
Does renal sympathetic denervation improve blood pressure control in patients with resistant hypertension?
Does renal sympathetic denervation improve blood pressure control in patients with resistant hypertension?
Renal sympathetic denervation is a promising, safe, and effective therapy for reducing blood pressure in patients with resistant hypertension.
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Early data on renal denervation in resistant hypertension are promising; leaves open its clinical utility without further randomized evidence.
Arterial hypertension is a highly prevalent disease and is associated with increased cardiovascular risk. Despite great advances in drug therapy, a considerable number of patients do not have an effective control of the disease, despite the use of multiple drugs, usually in high doses. Renal sympathetic denervation (RSD) has proved to be a promising therapy, with high safety and efficacy in preliminary studies in patients with resistant hypertension. The role of the sympathetic nervous system in the physiopathology of hypertension is well known, and is the rationale for the ablation of sympathetic fibers by transluminal delivery of radiofrequency in the renal arteries. In the last few years, results from case series, non-controlled studies and one multicenter randomized trial with a limited number of patients have shown a significant decrease in short and mid-term blood pressure levels. The objective of this review was to gather evidence on the use of RSD in the control of resistant hypertension and describe technical aspects and perspectives of the procedure. Denervação Simpática Renal Percutânea A hipertensão arterial sistêmica (HAS) é uma doença de alta prevalência e está comprovadamente relacionada a maior risco de eventos cardiovasculares. Apesar dos grandes avanços no tratamento farmacológico, uma parcela considerável dos pacientes não obtém um controle efetivo da doença, a despeito do uso de múltiplos fármacos e em doses elevadas. A denervação simpática renal percutânea (DSRP) tem se mostrado uma terapia promissora, com elevada segurança e eficácia em estudos preliminares em pacientes com HAS resistente. O papel do sistema nervoso simpático na fisiopatologia da HAS é bem conhecido e constitui o racional para a ablação das fibras simpáticas, por meio da aplicação de radiofrequência por via transluminal nas artérias renais. Nos últimos anos, resultados provenientes de algumas séries de casos, estudos não controlados e um estudo randomizado multicêntrico, com número limitado de pacientes, mostraram queda significativa dos níveis tensionais em curto e médio prazos. Esta revisão teve por objetivo reunir as evidências do uso da DSRP no controle da HAS resistente de maneira crítica, assim como descrever aspectos técnicos do procedimento e perspectivas.
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Bernardi et al. (2013) studied this question.
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