Effects of fluticasone propionate/salmeterol and tiotropium on arterial elastic function of patients with moderate to severe chronic obstruction pulmonary disease
Objective:To explore the effects of fluticasone propionate/salmsalmeterol(FSC)and tiotropium on arterial stiffness in pa-tients with stable chronic obstruction pulmonary disease(COPD). Methods:All 136 patients with stable COPD were randomly divided into three groups:FSC group(group F,n=45),tiotropium group(group T,n=45) and blank control group(group B,n=46). Patients in group B received the conventional therapy while those in group F FSC per day for 12 weeks and those in group T inhaled tiotropium per day for 12 weeks. Changes in brachial-angle pulse wave velocity(baPWV),large and small arterial compliance(C1 and C2),augementation index(AI),high sensitive C-reactive protein(hsCRP) were observed. Results:①Multiple stepwise regression analysis demonstrated that body mass index(P=0.000),course of disease(P=0.000),hsCRP(P=0.000) and smoking index(P=0.002) were pos-itively associated with baPWV while the forced expiratory volumein one second(FEV1)(P=0.000) was negatively associated with baPWV. ②At 12 weeks after the treatment,hsCRP and C1,C2 were improved compared with those before the treatment(P<0.01),more obviously in group F(P<0.05). Significant differences presented in the above indexes in comparison between group F,group T and group B after the treatment(P<0.05). The arterial elastic paramenters of group B and AI of group F and group T were not sig-nificantly improved(P >0.05). ③baPWV of group F and group T was decreased along with the time,more obvious in group F and most significantly in group c(baPWV>21.21 m/s) among subgroups of group F. No decrease of baPWV was observed in group B. Conclusion:Fluticasone propionate/salmsalmeterol had broader impacts on arterial stiffness of patients with COPD compared with tiotropium.