A randomized, double-blind, placebo-controlled study to determine the effects of valsartan on exercise time in patients with symptomatic heart failure with preserved ejection fraction.
OBJECTIVE
To determine whether valsartan improves treadmill exercise time, in patients with symptomatic heart failure with a preserved ejection fraction (HFPEF), compared with placebo.


RESULTS
In this multicentred, double-blind, 14-week study, patients were randomized to receive valsartan (V) 80 mg or placebo (P) once daily on top of background medications. The dose of valsartan was force-titrated up to 320 mg. A total of 152 patients were randomized (V = 70, P = 82). Most patients had well-controlled hypertension (V = 91.2%, P = 89.0%) (mean baseline systolic BP approximately 130 mmHg) and >50% were receiving an angiotensin-converting enzyme inhibitor and/or beta-blocker (V = 57.4%, P = 54.9%). The mean ejection fraction at baseline was 70.48% in the placebo group (n = 64) and 71.52% in the valsartan group (n = 79). Valsartan had no significant effect on exercise time (primary variable), gas exchange variables, 6 min walk test distance, exertion-related symptoms, brain natriuretic peptide levels, echocardiographic parameters, or quality-of-life scores. Valsartan significantly lowered peak exercise systolic BP (-13.1 mmHg vs. placebo; P < 0.001) and improved ratings of perceived exertion (Borg score) (-0.69 vs. placebo; P = 0.008).


CONCLUSIONS
In this population, which predominantly included patients with well-controlled hypertension and symptomatic HFPEF, addition of valsartan did not increase exercise time within 14 weeks. However, valsartan 320 mg reduced blood pressure and improved symptoms of perceived exertion (Borg score) during exercise and was generally well-tolerated.
Department of Cardiology, Papworth Hospital, Cambridge CB23 3RE, UK.
Hari K
HK
Parthasarathy
Burkert
B
Pieske
Marianne
M
Weisskopf
Chris D
CD
Andrews
Patrick
P
Brunel
Allan D
AD
Struthers
Thomas M
TM
MacDonald
D000368:Aged; D047228:Angiotensin II Type 1 Receptor Blockers / Q000008:administration & dosage*; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D017079:Exercise Tolerance / Q000187:drug effects*; D005260:Female; D005500:Follow-Up Studies; D006333:Heart Failure / Q000175:diagnosis / Q000188:drug therapy* / Q000401:mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D018570:Risk Assessment; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D013318:Stroke Volume / Q000187:drug effects; D016019:Survival Analysis; D013777:Tetrazoles / Q000008:administration & dosage*; D016896:Treatment Outcome; D014633:Valine / Q000008:administration & dosage / Q000031:analogs & derivatives*; D000068756:Valsartan
D047228:Angiotensin II Type 1 Receptor Blockers; D013777:Tetrazoles; D000068756:Valsartan; D014633:Valine