Acute Coronary Syndrome - OSU Center for Continuing ... - Current Conc… · Acute Coronary...
Transcript of Acute Coronary Syndrome - OSU Center for Continuing ... - Current Conc… · Acute Coronary...
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Acute Coronary Syndrome
Cindy Baker, MD FACCDirector Peripheral Vascular InterventionsDivision of Cardiovascular Medicine
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Topics
Timing is everything
So many drugs to choose from
What’s a MINOCA?
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Acute Coronary Syndrome
Clinical syndrome with acute myocardial ischemia and/or infarction due to an abrupt reduction in coronary blood flow.
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UA
NSTEMISTEMI
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Libby P. Inflammation in Atherosclerosis. Nature 420;868-74.
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Myocardial Infarction
NSTE-ACS
Final Dx
Cardiac Biomarker
ECG
Working Dx
Presentation Ischemic Discomfort
ACS
No ST Elevation
NQMI
STEMINSTEMIUA
Unstable AnginaQwMI
ST Elevation
Noncardiac Etiologies
* *
Acute Coronary Syndromes
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Reperfusion Therapy for Patients with STEMI
*Patients with cardiogenic shock or severe heart failure initially seen at a non–PCI-capable hospital should be transferred for cardiac catheterization and revascularization as soon as possible, irrespective of time delay from MI onset (Class I, LOE: B). †Angiography and revascularization should not be performed within the first 2 to 3 hours after administration of fibrinolytic therapy.
2013 ACC/AHA Guideline for the Management of STEMI
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Primary PCI in STEMI
IIb
2013 ACC/AHA Guideline for the Management of STEMI
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NSTEMI/UA
Early Invasive Strategy
Ischemia Driven
Strategy
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TIMI Risk Score* for NSTE-ACSTIMI Risk
ScoreAll-Cause Mortality, New or Recurrent MI, or Severe Recurrent Ischemia Requiring Urgent
Revascularization Through 14 d After Randomization, %
0–1 4.72 8.33 13.24 19.95 26.2
6–7 40.9
*The TIMI risk score is determined by the sum of the presence of 7 variables at admission; 1 point is given for each of the following variables: ≥65 y of age; ≥3 risk factors for CAD; prior coronary stenosis ≥50%; ST deviation on ECG; ≥2 anginal events in prior 24 h; use of aspirin in prior 7 d; and elevated cardiac biomarkers.
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GRACE Risk Model Nomogram
To convert serum creatinine level to micromoles per liter, multiply by 88.4.
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Factors Associated With Appropriate Selection of Early Invasive
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Immediate Invasive (within 2 hrs)•Signs or symptoms of HF or worsening MR•Hemodynamic instability•Recurrent angina or ischemia at rest or with low –level activites despite intensive medical therapy•Sustained VT or VF
Early Invasive (within 24 hrs)•None of the above but GRACE score > 140•Temporal change in Tn•New or presumably new ST depression
Delayed invasive (within 24-72hrs)•None of the above but diabetes mellitus•Renal insufficiency (GFR < 60 mL/min.1.73m2)•Reduced LV systolic function (EF <0.40)•Early post-infarct angina•PCI within 6 months•Prior CABG•GRACE risk score 109-140; TIMI score >/=2
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Factors Associated With Appropriate Selection of Ischemia-Guided Strategy
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Ischemia-guided stategy• Low-risk score (TIMI 0 or 1), GRACE <109• Low-risk Tn negative female patient• Patient or clinician preference in the absence of
high-risk features
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Antiplatelet Therapy in Acute Coronary Syndrome
Deepak L. Bhatt et al. Circ Res. 2014;114:1929-1943
Copyright © American Heart Association, Inc. All rights reserved.
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Adjunctive Antiplatelet Therapy to Support Reperfusion With Primary PCI
*The recommended maintenance dose of aspirin to be used with ticagrelor is 81 mg daily.
2013 ACC/AHA Guideline for the Management of STEMI
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Steg PG, et al. Circulation. 2010;122:2131-2141
Plato Trial
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NSTEMI/UATreated With an Initial Invasive or Ischemia-Guided Strategy
Recommendations COR LOEA P2Y12 inhibitor (either clopidogrel or ticagrelor) in addition to aspirin should be administered for up to 12 months to all patients with NSTE-ACS without contraindications who are treated with either an early invasive or ischemia-guided strategy. Options include:• Clopidogrel: 300-mg or 600-mg loading dose, then 75 mg
daily • Ticagrelor║: 180-mg loading dose, then 90 mg twice daily
IB
B
‖The recommended maintenance dose of aspirin to be used with ticagrelor is 81 mg daily.
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Treated With an Initial Invasive or Ischemia-Guided Strategy
Recommendations COR LOEIt is reasonable to use ticagrelor in preference to clopidogrelfor P2Y12 treatment in patients with NSTE-ACS who undergo an early invasive or ischemia-guided strategy.
IIa B
In patients with NSTE-ACS treated with an early invasive strategy and dual antiplatelet therapy (DAPT) with intermediate/high-risk features (e.g., positive troponin), a GP IIb/IIIa inhibitor may be considered as part of initial antiplatelet therapy. Preferred options are eptifibatide or tirofiban.
IIb B
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Cangrelor
Intravenous P2Y12 inhibitorADP analogue
Plasma half-life: 3-6 minutesFull recovery of platelet function within 60 minutes
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Champion Phoenix Trial
Bhatt DL et al. N Engl J Med 2013;368:1303-1313
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21Yeh RW, Secemsky EA, Kereiakes DJ, et al, DAPT Study Investigators. JAMA. 2016;315:1735-1749.
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Eur Heart J 2016
• A positive cardiac biomarker
• Clinical evidence of ischemia (symptoms, ST-T wave changes, development of pathologic Q waves, imaging evidence of new loss of viable myocardium or new wall motion abnormality
• Non-obstructive coronary arteries on angiography (less than 50%)
MINOCA -Definition
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MINOCA -Incidence
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• Estimated 54,000-187,000 cases/year in US
• Up to 5% one-year death rate
AHA statistics 2016; Pasupathyet al Circulation. 2015; 131: 861-870
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Non-Obstructive CAD- Common in All Forms of ACS
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MINOCA is Caused By a Variety of Underlying Etiologies
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MINOCA is Caused By a Variety of Underlying Etiologies
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Plaque Rupture
27Images taken from Light Lab Imaging/SJM
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Cardiac MRI Can Be Helpful to Identify Cause of MI
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Women’s Heart Attack Program (HARP)
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• Clinical Imaging Study: OCT and MRI in women with MINOCA
• Population Stress Study: Randomized trial of stress management intervention in women with MI
• Basic Platelet Study: Comprehensive assessment of thrombotic and platelet-mediated pathways in women with MINOCA
funded by the AHA Go Red for Women Network
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THANK YOU!
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