Desnervação renal em doentes com hipertensão arterial resistente: resultados aos seis meses de seguimento

Translated title of the contribution: Renal denervation in patients with resistant hypertension: six-month results

Hélder Alexandre Correia Dores*, Manuel de Sousa Almeida, Pedro de Araújo Gonçalves, Patrícia Branco , Augusta Gaspar , Henrique Sousa , Angela Canha Gomes, Maria João Andrade, Maria Salomé Carvalho, Rui Campante Teles, Luís Raposo, Henrique Mesquita Gabriel, Francisco Pereira Machado , Miguel Mendes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Introduction: Increased activation of the sympathetic nervous system plays a central role in thepathophysiology of hypertension (HTN). Catheter-based renal denervation (RDN) was recentlydeveloped for the treatment of resistant HTN.Aim: To assess the safety and efficacy of RDN for blood pressure (BP) reduction at six monthsin patients with resistant HTN.Methods: In this prospective registry of patients with essential resistant HTN who underwentRDN between July 2011 and May 2013, the efficacy of RDN was defined as ≥10 mmHg reductionin office systolic blood pressure (SBP) six months after the intervention.Results: In a resistant HTN outpatient clinic, 177 consecutive patients were evaluated, of whom34 underwent RDN (age 62.7 ± 7.6 years; 50.0% male). There were no vascular complications,either at the access site or in the renal arteries. Of the 22 patients with complete six-monthfollow-up, the response rate was 81.8% (n = 18). The mean office SBP reduction was 22 mmHg(174 ± 23 vs. 152 ± 22 mmHg; p < 0.001) and 9 mmHg in diastolic BP (89 ± 16 vs. 80 ± 11 mmHg;p = 0.006). The number of antihypertensive drugs (5.5 ± 1.0 vs. 4.6 ± 1.1; p = 0.010) and pharma-cological classes (5.4 ± 0.7 vs. 4.6 ± 1.1; p = 0.009) also decreased significantly. Of the 24-hourambulatory BP monitoring and echocardiographic parameters analyzed, there were significantreductions in diastolic load (45 ± 29 vs. 27 ± 26%; p = 0.049) and in left ventricular mass index(174 ± 56 vs. 158 ± 60 g/m2; p = 0.014).Conclusion: In this cohort of patients with resistant HTN, RDN was safe and effective, with asignificant BP reduction at six-month follow-up.
Translated title of the contributionRenal denervation in patients with resistant hypertension: six-month results
Original languagePortuguese
Pages (from-to)197-204
Number of pages8
JournalRevista Portuguesa de Cardiologia
Volume33
Issue number4
DOIs
Publication statusPublished - Apr 2014
Externally publishedYes

Keywords

  • Resistant hypertension
  • Renal denervation
  • Left ventricular hypertrophy

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