TY - JOUR
T1 - Predialysis systolic BP variability and outcomes in hemodialysis patients
AU - Shafi, Tariq
AU - Sozio, Stephen M.
AU - Bandeen-Roche, Karen J.
AU - Ephraim, Patti L.
AU - Luly, Jason R.
AU - St. Peter, Wendy L.
AU - McDermott, Aidan
AU - Scialla, Julia J.
AU - Crews, Deidra C.
AU - Tangri, Navdeep
AU - Miskulin, Dana C.
AU - Michels, Wieneke M.
AU - Jaar, Bernard G.
AU - Herzog, Charles A.
AU - Zager, Philip G.
AU - Meyer, Klemens B.
AU - Wu, Albert W.
AU - Boulware, L. Ebony
N1 - Publisher Copyright:
Copyright © 2014 by the American Society of Nephrology.
PY - 2014/4/1
Y1 - 2014/4/1
N2 - BP variability (BPV) is an important predictor of outcomes in the general population, but its association with clinical outcomes in hemodialysis patients is not clear. We identified 11,291 patients starting dialysis in 2003-2008 andfollowed them through December 31, 2008 (median=22 months). Predialysis systolicBPVwas assessed overmonthly intervals.Outcomes included factors associated with BPV, mortality (all-cause and cardiovascular), and first cardiovascular event (cardiovascular death or hospitalization). Patients' mean age was 62 years, 55% of patients were men, and 58% of patients were white. Modifiable factors associated with higher BPV included obesity, higher calcium-phosphate product levels, and lower hemoglobin concentration; factors associated with lower BPV included greater fluid removal, achievement of prescribed dry weight during dialysis, higher hemoglobin concentration, and antihypertensive regimens without b-blockers or renin-angiotensin system blocking agents. In total, 3200 deaths occurred, including 1592 cardiovascular deaths. After adjustment for demographics, comorbidities, and clinical factors, higher predialysis BPV was associated with increased risk of all-cause mortality (hazard ratio [HR], 1.18; 95% confidence interval [95% CI] per 1 SD increase in BPV, 1.13 to 1.22), cardiovascular mortality (HR, 1.18; 95% CI, 1.12 to 1.24), and first cardiovascular event (HR, 1.11; 95% CI, 1.07 to 1.15). Results were similar when BPV was categorized in tertiles and patients were stratified by baseline systolic BP. In summary, predialysis systolic BPV is an important, potentially modifiable risk factor for death and cardiovascular outcomes in incident hemodialysis patients. Studies of BP management in dialysis patients should focus on both absolute BP and BPV.
AB - BP variability (BPV) is an important predictor of outcomes in the general population, but its association with clinical outcomes in hemodialysis patients is not clear. We identified 11,291 patients starting dialysis in 2003-2008 andfollowed them through December 31, 2008 (median=22 months). Predialysis systolicBPVwas assessed overmonthly intervals.Outcomes included factors associated with BPV, mortality (all-cause and cardiovascular), and first cardiovascular event (cardiovascular death or hospitalization). Patients' mean age was 62 years, 55% of patients were men, and 58% of patients were white. Modifiable factors associated with higher BPV included obesity, higher calcium-phosphate product levels, and lower hemoglobin concentration; factors associated with lower BPV included greater fluid removal, achievement of prescribed dry weight during dialysis, higher hemoglobin concentration, and antihypertensive regimens without b-blockers or renin-angiotensin system blocking agents. In total, 3200 deaths occurred, including 1592 cardiovascular deaths. After adjustment for demographics, comorbidities, and clinical factors, higher predialysis BPV was associated with increased risk of all-cause mortality (hazard ratio [HR], 1.18; 95% confidence interval [95% CI] per 1 SD increase in BPV, 1.13 to 1.22), cardiovascular mortality (HR, 1.18; 95% CI, 1.12 to 1.24), and first cardiovascular event (HR, 1.11; 95% CI, 1.07 to 1.15). Results were similar when BPV was categorized in tertiles and patients were stratified by baseline systolic BP. In summary, predialysis systolic BPV is an important, potentially modifiable risk factor for death and cardiovascular outcomes in incident hemodialysis patients. Studies of BP management in dialysis patients should focus on both absolute BP and BPV.
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U2 - 10.1681/ASN.2013060667
DO - 10.1681/ASN.2013060667
M3 - Article
C2 - 24385593
AN - SCOPUS:84901473153
SN - 1046-6673
VL - 25
SP - 799
EP - 809
JO - Journal of the American Society of Nephrology
JF - Journal of the American Society of Nephrology
IS - 4
ER -