Objective To study the impact of alprostadil on serum high-sensitivity C-reactive protein ( hs-CRP) and troponin I( cTnI) in patients with diastolic heart failure.Methods 92 patients with diastolic heart failure were randomly divided into the two groups,the control group and the observation group,46 cases in each group.The control group used the conventional treatment and the observation group on the basis of conventional therapy plus al-prostadil.Two groups were treated for 4 weeks.They were measured filling velocity ratio (E/A) in patients with early and late peak atrial contraction,stroke volume (SV),left ventricular end-diastolic diameter (LVEDD),6min walking distance and serum hs-CRP, cTnI before and after treatment.Results There were no significant difference about LVEDD,E/A and SV(t=0.,0.261,0.445,all P〉0.05).After treatment for four weeks,LVEDD were (53.1 ± 5.1)mm and (47.3 ±4.7)mm,LVEDD of the two groups had significantly decreased (t=4.601,9.331,P〈0.05, P〈0.01),and post-treatment the observation group LVEDD decrease more significantly (t=2.914,P〈0.05).After 4 weeks of treatment,the control group after treatment E/A and SV were (0.79 ±0.15) and (72.6 ±5.4),the ob-servation group E/A and SV were (0.85 ±0.14) and (79.5 ±5.9)mL,E/A and SV in both groups were significant-ly elevated (t=3.172,4.710,3.924,5.776,P〈0.05,P〈0.01),and E/A and SV of post-treatment the observation group increased more significantly (t=3.771,2.840,P〈0.05).After treatment,patients 6min walking distance were (383.4 ±47.5)m and (426.1 ±49.1) m,6min walking distance of patients were significantly improved after treat-ment (t=8.776,12.648,P〈0.01),and the observation group improved significantly more than that of the control group (t=3.019 2,P〈0.05).In the control group,serum hs-CRP patients,cTnI were (21.3 ±4.6) mg/L and (2.13 ±0.52) ng/mL,(13.8 ±4.1) mg/L and (1.05 ±0.38) ng/mL in the observation group.Two groups of patients before treatment serum hs-CRP and cTnI was no significant difference (t=0.527,0.493,all P〉0.05).After 4 weeks of treatment,the serum hs-CRP,cTnI were significantly lower in both groups (t=3.612,8.772,2.924, 5.164,P〈0.05,P〈0.01),and compared with the control,the observation group reduced more significantly (t=3.061,7.114,P〈0.05).Conclusion Alprostadil can decrease serum hs-CRP and cTnI of patients with diastolic heart failure. Key words: Diastolic heart failure ; Alprostadil ; C-reactive protein ; TroponinI