Reduced peripheral vascular reactivity in refractory angina pectoris:Effect of enhanced external counterpulsation  

作　　者：Susanne M Bondesson Marie-Louise Edvinsson Thomas Pettersson Lars Edvinsson 

机构地区：[1]Department of Medicine,Kristianstad Hospital,SE-29185 Kristianstad,Sweden [2]Department of Health Sciences Lund,Lund University,SE-22100 Lund,Sweden [3]Department of Emergency Medicine,Lund University Hospital,SE-22185 Lund,Sweden

出　　处：《Journal of Geriatric Cardiology》2011年第4期215-223,共9页老年心脏病学杂志（英文版）

摘　　要：Objective To examine if the skin microvascular bed is altered and can be modified by enhanced external counterpulsation(EECP)in patients with chronic refractory angina.Methods Twenty patients diagnosed with refractory angina were divided into EECP(n=10)or no EECP(n=10)groups.The data were compared to matched healthy subjects(n=20).The cutaneous forearm microvascular blood flow was measured by Laser-Doppler flowmetry.The vascular responsiveness to iontophoretic administration of acetylcholine(ACh),sodium nitroprusside(SNP)and local skin warming were studied.Measurements of Canadian Cardiovascular Society(CCS)-class,blood pressure and plasma samples were registered.Results EECP patients showed reduced CCS-class compared to no EECP(P<0.05).Both EECP and no EECP(P<0.05)groups had decreased systolic blood pressure(SBP)as compared to SBP at baseline(P<0.05).There was no difference in resting blood flow between the two refractory groups at baseline as well as after EECP and seven weeks of follow-up.Responses to heating,the responses to ACh and SNP in the cutaneous microcirculation were lower in both groups of refractory angina patients as compared to healthy subjects(P<0.05).EECP patients corresponded positively to the treatment shown by reduced plasma level of soluble interleukin-2 receptor and CCS-class.Conclusions Refractory angina patients have reduced responsiveness in their cutaneous microcirculation to ACh,SNP and heat compared to healthy subjects.Although EECP reduced the CCS-class,this effect was not associated with improvements in responsiveness of the cutaneous microcirculation.

关 键 词：refractory angina pectoris FLOWMETRY MICROCIRCULATION enhanced external counterpulsation 

分 类 号：R54[医药卫生—心血管疾病]