Document Detail

Translesional pressure gradients to predict blood pressure response after renal artery stenting in patients with renovascular hypertension.
MedLine Citation:
PMID:  21078879     Owner:  NLM     Status:  In-Process    
BACKGROUND: In previous studies on the effect of renal stenting on arterial hypertension, patients were selected mainly on the basis of angiographic parameters of the renal artery stenosis. The aim of the present study was to evaluate whether translesional pressure gradients could identify the patients with renal artery stenosis who might benefit from stenting.
METHODS AND RESULTS: A total of 53 consecutive hypertensive patients with unilateral RAS scheduled for renal artery intervention were recruited. Transstenotic pressure gradients were measured at baseline and during maximal hyperemia, before renal artery stenting. Twenty-four-hour ambulatory blood pressure measurements were performed in all patients before and 3 months after the intervention. Average reductions in systolic blood pressure and diastolic blood pressure at follow-up were -20±30 mm Hg and -2±12 mm Hg, respectively. At multivariate analysis, dopamine-induced mean gradient was the only independent predictor of the variations of both systolic blood pressure (regression coefficient=-4.03, standard error=1.11; P<0.001) and diastolic blood pressure (regression coefficient=-3.11, standard error=1.20; P=0.009). Patients who showed a decline in systolic blood pressure from the baseline value >20 mm Hg were considered as "responders." The optimal cutoff for identification of "responders" was a dopamine-induced mean gradient ≥20 mm Hg (area under the curve, 0.77; 95% confidence interval, 0.64 to 0.90; P=0.001).
CONCLUSIONS: A dopamine-induced mean pressure gradient of ≥20 mm Hg is highly predictive of arterial hypertension improvement after renal stenting, and therefore this measurement is useful for appropriate selection of patients with arterial hypertension.
Fabio Mangiacapra; Catalina Trana; Giovanna Sarno; Giedrius Davidavicius; Marcin Protasiewicz; Olivier Muller; Argyrios Ntalianis; Nerijus Misonis; Bruno Van Vlem; Guy R Heyndrickx; Bernard De Bruyne
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-11-15
Journal Detail:
Title:  Circulation. Cardiovascular interventions     Volume:  3     ISSN:  1941-7632     ISO Abbreviation:  Circ Cardiovasc Interv     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101499602     Medline TA:  Circ Cardiovasc Interv     Country:  United States    
Other Details:
Languages:  eng     Pagination:  537-42     Citation Subset:  IM    
Cardiovascular Center, OLV-Clinic, Aalst, Belgium.
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Comment In:
Circ Cardiovasc Interv. 2010 Dec;3(6):526-7   [PMID:  21078878 ]

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