Reduce 10mmHg diastolic BP Reduce 20mmHg systolic BP Lancet 2002; 360: 1903–13.
No severe hypertension. NNT=118 (DBP 90-110 mm Hg). Moderate hypertension. NNT =52 (DBP at or below 115 mm Hg) Severe hypertension. NNT=29 (DBP above 115 mm Hg) Secondary prevention: NNT=110 (for patients with initial BP <160/90 mmHg and reduction by 12/5 mm Hg) PROGRESS Lancet 2001
Aspirin Mechanism: (inhibits PG synthesis) Inhibits PGH synthase pre- systemically. Covalently acetylates Cyclo-oxygenase (irr.) Inhibits platelet function by 1 hour. Lasts entire platelet lifetime (~10d) Efficacy is not in question. Controversy: o Dosage o Aspirin resistance Aspirin
00.5 1.0 1.5 2.0 500-1500 mg 34 19 160-325 mg 19 26 75-150 mg 12 32 <75 mg 3 13 Any aspirin 65 23 Antiplatelet BetterAntiplatelet Worse Aspirin Dose No. of Trials OR (%) Odds Ratio *Vascular events included nonfatal MI, nonfatal stroke, and death from vascular causes. Treatment effect P<.0001. Antithrombotic Trialists Collaboration. BMJ. 2002;324:71-86.
CAST & IST: Metaanalysis ~40,000 pts. ~99% of evidence from randomized trials. Reduction of 9/1000 overall risk of further cva/ death in hospital. Reduction of 7/1000 ischemic cva. (p<0.000001) * Starting ASA early reduces risk of recurrent cva. ______________ Chen. Stroke 2000;31:1240. Aspirin within 24hrs after CVA
______________ CAPRIE Overall safety = asa. Sl. more effective in reducing end- points (cva/mi/vasc.d) all pt result driven by subset of PVD pts Results: CAPRIE: Clopidogrel
Bhatt D et al. N Engl J Med 2006;354:1706-1717 Diener et al. Lancet 2004;364:331-337 CHARISMAMATCH
ESPRIT Study Group. Lancet 2006;367:1665-1673. 30–325mg Aspirin and 200 Dipyridamole BID versus 30-325mg Aspirin Alone (ESPRIT) Dipyridamole n=2739 all with stroke or TIA Dipyridamole stopped 470 ASA alone stopped 184 1% event reduction per year
ESPRIT is an un-blinded trial Patients and physicians were aware of applied medication with potential bias 400 mg daily dipyridamole with different formulations extended (modified) release immediate release Aspirin dose from 30 to 325 mg De Schryver et al. Cerebrovasc Dis. 2000;10:147-50.
16 trials on stroke prevention in AF (n=9874) Warfarin reduced stroke by 62% absolute reduction 2.7% for primary and 8.4% for secondary prevention Aspirin reduced stroke by 22% absolute 1.5 and 2.5% Hart RG, et al. Stroke 1999.
The ACTIVE Investigators. N Engl J Med 2009;10.1056/NEJMoa0901301 Patients who have AF but cannot take warfarin n=7,554 3.6 years All received ASA Major vascular events: clopidogrel 6.8% / year, placebo 7.6% / year) Stroke: clopidogrel 2.4% per year, placebo 3.3% per year Major bleeding: clopidogrel 2.0% per year, placebo 1.3% per year
Cumulative Hazard Rates for the Primary Efficacy and Safety Outcomes,According to Treatment Group N Engl J Med 2011
Eat more fresh foods, especially fruits and vegetables Purchase processed foods with low salt claims on labels, or brands with the lowest % of daily sodium intake on the food label. Avoid heavily salted foods (pickled foods, olives, salted crackers or snacks, process meats, etc). Rinse canned foods with water before eating Use less salt in home cooking and no added salt at the table.