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1、Meta-Analysis of Data from the Six Primary Prevention Trials of Cardiovascular Events Using AspirinAlfred A. Bartolucci, PhD*, and George Howard, DrPHAm J Cardiol 2019; 98:746Aspirin in the primary prevention of cardiovascular (CV) eventsTrialPatient populationAge range (years)Aspirin dosageBDT (198
2、8)1Apparently healthy male physicians (n=5,139) 5078 500mg/dayPHS (1989)2Apparently healthy male physicians (n=22,071) 4084 325mg qodHOT study (2019)3Men and women with DBP 100115mmHg (n=18,790) 5080 75mg/dayTPT (2019)4Men at high risk of heart disease (n=5,499) 456975mg/dayPPP (2019)5Men and women
3、with 1 major CV risk factor (n=4,495) 5080+100mg/dayWHS (2019)6Apparently healthy women (n=39,876) 45100mg qodBDT, British Doctors Trial; HOT, Hypertension Optimal Treatment; PHS, Physicians Health Study; PPP, Primary Prevention Project; qod, every other day; TPT, Thrombosis Prevention Trial; WHS, W
4、omens Health Study.1. Peto R, et al. BMJ 1988;296:3136; 2. Physicians Health Study. N Engl J Med 1989;321:18258; 3. Hansson L, et al. Lancet 2019;351:175562. 4. The Medical Research Councils General Practice Research Framework. Lancet 2019;351:23341; 5. de Gaetano G, et al. Lancet 2019;357:8995. 6.
5、Ridker PM, et al. N Engl J Med 2019;352:1293304.Primary findings (total CV events) from the six key trialsStudy NameRisk Aspirin Control/ PlaceboOddsBDTLow260/3429127/17101.0230.842PHSLow292/11037390/110340.7690.001TPTHigh208/1268250/12720.7410.003HOTLow243/9399290/93910.8240.033PPPLow46/222665/2269
6、0.5460.006WHSLow539/19934585/199420.9820.780TOTAL1588/472931707/456180.86910% over 10 years) once blood pressure has been controlled (as closely as possible to the goal of less than 140/90 mmHg) In lower risk individuals a small absolute vascular benefit by aspirin maybe offset by the slightly great
7、er absolute risk of bleeding complicationsEJCPR 2019;vol 14(suppl 2):S1-S113American Heart Association (AHA) Guidelines Benefits of reducing CV risk outweigh these risks in most patients with higher coronary risk Doses of aspirin 75160 mg per day are as effective as higher doses Consider aspirin 751
8、60 mg per day for people at higher risk (especially those with a 10-year CHD risk of 10 percent or greater)Circulation 2019;106:338-391AHA guidelines for CVD prevention in women (2019 update) Aspirin: high-risk Any vascular disease, end-stage or chronic renal disease, diabetes mellitus, and 10-year
9、Framingham risk 20% Aspirin therapy 75 to 325 mg per day should be used in high-risk women unless contraindicated (Class I, Level A)Circulation 2019;115:1481-1501Guide to clinical preventive services 2019: recommendations from USPSTF USPSTF strongly recommends that clinicians discuss aspirin chemopr
10、evention with adults who are at increased risk for CHD Discussions with patients should address both the potential benefits and harms of aspirin therapy Grade: A RecommendationGuide to clinical preventive services 2019: recommendations from USPSTFBaseline risk for CHD over 5 years: 1%Total mortality
11、: no effectCHD events: 14 avoidedHemorrhagic strokes: 02 causedMajor gastrointestinal bleeding events: 24 causedGuide to clinical preventive services 2019: recommendations from USPSTF Baseline risk for CHD over 5 years: 3% Total mortality: no effect CHD events: 412 avoided Hemorrhagic strokes: 02 ca
12、used Major gastrointestinal bleeding events: 24 causedGuide to clinical preventive services 2019: recommendations from USPSTFBaseline risk for CHD over 5 years: 5%Total mortality: no effectCHD events: 620 avoidedHemorrhagic strokes: 02 causedMajor gastrointestinal bleeding events: 24 causedWho shoul
13、d be treated with aspirin?The decision to use aspirin should be based on a balance of the risks and benefits for each person taking into account their absolute risk for CHD or CVD.Patients with established CVD or very high risk patients should be treated with aspirin unless contraindicated.Before st
14、arting treatment with aspirin always consider risks factors for GI bleeding such as age and concomitant use of NSAIDS.An unanswered question In primary prevention is whether the benefits of daily aspirin outweights the harms in specific populations (such as those with moderate risk of CHD)Antithombo
15、sis in Primary Prevention Where are we going ? Ongoing trials to assess the benefit:risk profile of low-dose aspirin in the prevention of first CV eventsThe ARRIVE Study (Aspirin to Reduce Risk of Initial Vascular Events)Rationale ARRIVE will expand the already existing, strong body of evidence supp
16、orting aspirin for primary prevention of CVD events ARRIVE was designed to demonstrate the efficacy and safety of low-dose aspirin in a moderate-risk populationCHD risk continuum Low Risk Moderate Risk High Risk PPP TPT Angina REVASC. (CABG, PTCA) 2 Prevention 10% 20% Adverse Event rate 12 4 12 4 25
17、 BDT WHS PHS HOT ARRIVE# of MIs prevented(Per 1,000 patients treated for 10 years)CHD 10-year RiskBENEFIT RISKBENEFIT RISKBENEFIT RISKOverall CHD, Stroke, and CV Death Mean 10-Year Risk (%)CHD(PROCAM and Framingham) STROKE (Framingham)CV Death(SCORE)Total(CVD)High-risk countries15.8%9.1%5.1%30.0%Ris
18、k Estimates by Age and Gender (All Countries)Low-risk countries8.5%9.1%2.75%20.3%Overall12.9%9.1%4.1%26.1%Overview of the ARRIVE Trial Sample Size: 12,000 patients (6,000 per group) will be enrolled Duration of Study: approximately 5 years Study Locations: More than 400 trial sites across Germany, I
19、reland, Italy, Poland, Spain, UK, USA Gender Distribution: 70% male/30% female Intervention: 1:1 daily aspirin (100 mg) or placeboStudy designAspirin daily (100 mg) (n6,000)Placebo1 tablet daily (n6,000)12-month visitR=Randomization; *First occurrence of composite outcome of MI, stroke, or cardiovascular death; +Telephone contactPatients (n=12,000) at moderate risk of CVD eventsRDouble-blind treatment up t
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