How Low Should You Go? Optimizing BP in CKD

3. Does the patient have significant albuminuria? An additional subgroup analysis for patients with high levels of proteinuria (defined as > 1 g/d) yielded inconclusive results.³ Patients with proteinuria > 1 g/d tended to have a slower decline in GFR with intensive BP control.³ Proteinuria > 0.5 g/d was correlated with a slowed progression to end-stage renal disease with intensive BP control.³ Again, these were trends and not statistically significant. So, for patients with high levels of proteinuria, it will not hurt to achieve a BP < 130/80 mm Hg, but there is no statistically significant difference between BP < 130/80 mm Hg and BP < 140/90 mm Hg.

What, then, are the recommendations for an African-American patient with significant proteinuria? While not addressed directly in the analysis, the study results suggest that the goal should still be < 140/90 mm Hg, since the link between race and changes in GFR is statistically significant and the effects of proteinuria are not. Although the recommendations from this review are many, the main points are summarized in the Figure.—RC

Rebecca Clawson, MAT, PA-C
Instructor, PA Program, LSU Health Shreveport, Louisiana