20. AB/CD Rule – HT Treatment AGE Younger (< 55) ACEi, Beta-blocker Ca++-blocker, Diuretic) (AB/CD = Dickerson et al. Lancet 353:2008-11;1999 Older (> 55) ACEi / ARB BB A + B A + B + D Diuretic CCB D + C + A D + C I II III III II I Resistant HT / Intolerance Add / substitute alpha blocker Re-consider 2 0 causes trial of spironolactone IV: V: