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  • Title: Effect of cloricromene on intermittent claudication. A randomized, double-blind, placebo-controlled trial in patients treated with aspirin: effect on claudication distance and quality of life. CRAMPS Investigator Group. Cloricromene Randomized Arteriopathy Multicenter Prospective Study.
    Author: Gresele P, Migliacci R, Di Sante G, Nenci GG, CRAMPS Investigator Group.
    Journal: Vasc Med; 2000; 5(2):83-9. PubMed ID: 10943584.
    Abstract:
    The main aim of medical treatment for intermittent claudication (IC) is the reduction of mortality and morbidity from ischemic cardiovascular disease. However, symptomatic treatment with the aim of improving exercise performance and the overall quality of life may also be an important target of the clinical management of patients with intermittent claudication. Cloricromene, a drug with antithrombotic and anti-ischemic activities, has previously shown some promising results in patients with claudication. We have carried out a clinical trial to assess the effect of cloricromene on the claudication distance and on the quality of life of patients with IC chronically treated with aspirin. A total of 159 patients with IC, Stage II (Fontaine), were enrolled in a double-blind, randomized, prospective, multicenter study comparing cloricromene (100 mg orally b.i.d.) or an identical placebo for 6 months. All patients received 160 mg/day aspirin. The primary end-point was the improvement of initial claudication distance (ICD) at 6 months as measured by a standardized treadmill test. The secondary end-points were the absolute claudication distance (ACD) at 6 months, the percentage of patients defined as responders to treatment (improvement of ICD of at least 40%), changes in the ischemic window (IW), quality of life as assessed by the SF-36 questionnaire, and the occurrence of major cardiovascular events. The ICD increased in both treatment groups, with a non-significant difference at 6 months in favor of cloricromene of +12.3 m. The ACD, percentage of responders to treatment and ischemic window also improved in both groups with a slight, non-significant trend in favor of cloricromene. Pretreatment quality of life scores showed only a slight worsening compared with an age-matched, healthy population and did not change upon treatment. A post hoc subgroup analysis showed a significant benefit from cloricromene in patients with an ICD at enrollment higher than the median of the patient population. In conclusion, treatment with cloricromene for 6 months does not significantly improve claudication in patients with Stage II Fontaine peripheral arteriopathy chronically treated with aspirin. An improvement of 40-60 m in the ICD on a standardized treadmill test does not translate into a self-perceived improvement in the quality of life as assessed by the SF-36 questionnaire.
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