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  • Title: Efficacy of 24-Hour Blood Pressure Monitoring in Evaluating Response to Percutaneous Transluminal Renal Angioplasty.
    Author: Jujo K, Saito K, Ishida I, Furuki Y, Ouchi T, Kim A, Suzuki Y, Sekiguchi H, Yamaguchi J, Ogawa H, Hagiwara N.
    Journal: Circ J; 2016 Aug 25; 80(9):1922-30. PubMed ID: 27439675.
    Abstract:
    BACKGROUND: Percutaneous transluminal renal angioplasty (PTRA) improves patency in atherosclerotic renal artery stenosis (ARAS), but improvement in clinic blood pressure (BP) is seen in only 20-40% of patients who undergo PTRA. This study investigated the effects of PTRA on BP lowering, assessed on 24-h ambulatory BP monitoring (ABPM), and identified preoperative features predictive of satisfactory BP improvement after PTRA. METHODS AND RESULTS: Of 1,753 consecutive patients undergoing coronary angiography, 31 patients with angiographically significant ARAS and translesional pressure gradient (TLPG) >20 mmHg underwent PTRA. ABPM was performed before, at 1 month and at 1 year after PTRA; patients with average systolic ABPM-BP decrease >10 mmHg at 1 month from baseline were categorized as responders. There was no obvious relationship between clinic BP and ABPM-BP at baseline. ABPM-BP was significantly higher in responders at baseline (SBP: 148 vs. 126 mmHg, P<0.01) and was improved 1 month after PTRA. This difference persisted until 1 year after PTRA. Night-time BP improved more than daytime BP in responders. Patients with higher baseline ABPM-BP achieved a larger decrease in ABPM-BP, but the severity of stenosis reflected by TLPG; renal duplex findings; and neurohumoral parameters other than baseline renal function, did not differ between the groups. CONCLUSIONS: Clinic BP does not represent daily hemodynamic status, whereas high ABPM-BP is a potent predictor of satisfactory BP response to PTRA. (Circ J 2016; 80: 1922-1930).
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