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Sequential nephron blockade versus sequential renin-angiotensin system blockade in resistant hypertension: a prospective, randomized, open blinded endpoint study.
MedLine Citation:
PMID:  22728905     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE:: To compare two drug regimens to treat resistant hypertension. METHODS:: In a prospective, randomized, open blinded endpoint study, 167 patients with mean baseline daytime ambulatory blood pressure 135 mmHg or more and/or 85 mmHg or more, despite 4 weeks' treatment with irbesartan 300 mg/day, hydrochlorothiazide 12.5 mg/day and amlodipine 5 mg/day, were randomized to sequential nephron blockade (group 1, n = 85) or sequential renin-angiotensin system blockade (group 2, n = 82). First, spironolactone 25 mg/day in group 1 or ramipril 5 mg/day in group 2 were added for 4 weeks. Treatment was increased at weeks 4, 8 or 10 if home blood pressure was 135 mmHg or more and/or 85 mmHg or more by sequentially administering furosemide 20 mg/day, furosemide 40 mg/day and amiloride 5 mg/day in group 1, or ramipril 10 mg/day, bisoprolol 5 mg/day and bisoprolol 10 mg/day in group 2. The primary endpoint was change in systolic daytime ambulatory blood pressure at week 12. RESULTS:: At week 12, the mean between-group difference in daytime ambulatory blood pressure was 10/4 mmHg (95% confidence interval: 7-14/2-7; P < 0.001/P = 0.0014) in favour of the group 1. The blood pressure goal (daytime ambulatory blood pressure <135/85 mmHg) was achieved in 58% in the group 1 and 20% in the group 2 (P < 0.0001). Discontinuation for drug-related adverse events was low (group 1, n = 7; group 2, n = 6). CONCLUSION:: In patients with resistant hypertension, sequential nephron blockade induces a large and well tolerated reduction in blood pressure via a progressive increase in sodium depletion, and is more effective than sequential renin-angiotensin system blockade.
Authors:
Guillaume Bobrie; Michael Frank; Michel Azizi; Séverine Peyrard; Pierre Boutouyrie; Gilles Chatellier; Stéphane Laurent; Joël Menard; Pierre-François Plouin
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-21
Journal Detail:
Title:  Journal of hypertension     Volume:  -     ISSN:  1473-5598     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8306882     Medline TA:  J Hypertens     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
aAssistance Publique, Hôpitaux de Paris, Hôpital Européen Georges Pompidou bClinical Investigation Centre 9201 cInserm CIE4 dInserm U970 eUniversité Paris-Descartes, Paris, France.
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