PERIPHERAL AND CENTRAL AMBULATORY BLOOD PRESSURE IN PATIENTS WITH DIFFERENT ETIOLOGY OF END-STAGE RENAL DISEASE

Aim. To study peripheral and central ambulatory hemodynamics during the 44-hour interdialytic period in patients with different etiology of end-stage renal disease (ESRD)

Methods. 68 patients with ESRD receiving renal replacement therapy underwent 44-hour interdialytic ambulatory measurement of aortic and brachial artery blood pressure using a validated oscillometric technology Vasotens BPLab (OOO “Petr Telegin”,Nizhny Novgorod). The obtained results were estimated using the Mann-Whitney test depending on the etiology of ESRD (i.e. as a result of primary kidney disease or arterial hypertension (AH) and/or diabetes mellitus (DM). p<0.05 wasconsideredstatistically significant.

Results. Elevated levels of clinical systolic BP (SBP) before (156 [143; 168] and 146 [136; 155] mm Hg) and after the initiation of hemodialysis (154 [140; 169] and 146 [137; 155] mm Hg; p<0.05) were commonly found in patients with ESRD secondary to AH and/or DM compared with those patients with ESRD caused by primary kidney disease. This group of patients demonstrated elevated 44-hour peripheral SBP (149 [138; 160] and 139 [132; 147] mm Hg), pulse BP (PBP) (65 [56; 74] and 60 [54; 66] mm Hg), central nocturnal SBP (132 [122; 143] and 125 [116; 133] mm Hg); p<0.05. Peripheral (152 [141; 163] and 147 [136; 158] mm Hg) and central SBP (137 [125; 148] and 131 [121; 141] mm Hg) were higher in the group of patients with ESRD due to AH and/or DM on day 2 after hemodialysis initiation compared to those on day 1; p<0.05. Peripheral and central daily and nocturnal SBP and pulse BP were also elevated. Patients with primary kidney disease had elevated nocturnal central SBP on day 2 after hemodialysis initiation compared to those on day 1 (131 [121; 142] and 126 [116; 135] mm Hg, p<0.05).

Conclusion. Patients with ESRD secondary to AH and/or DM had higher levels of clinical SBP before and after hemodialysis initiation, as well as ambulatory peripheral and central SBP and pulse BP during both, the 44-hour interdialytic period and on interdialytic days 1-2, compared with patients with primary kidney diseases. In addition, patients in this group demonstrated elevated peripheral and сentral SBP and PBP on day 2 after hemodialysis initiation compared with those on day 1. 

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