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Intervention for acute coronary syndrom without ST elevation,the earlier,the better

  •             Shubin Qiao,M.D
  • Cardiovascular Institute &Fuwai hospital,
  • Chinese Academy of Medical Sciences


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Clinical character
  • 65 male
  • Essential hypertension, Hyperlipidemia
  • Previous PCI at RCA 8 months ago
  • Chest pain for 16 hours
  •  ST(V2-5) depressing even with comprehensive medication
  • Troponin  (+)


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Previous PCI 8 months ago
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PCI at RCA 8 months ago
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PCI at RCA 8 months ago
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Angiography finding this time
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PCI procedure
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Final result
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Implication
  • PCI for NSTE ACS  is the best  choice especially for those with ischemic evidence under comprehensive medication
  • Previous PCI can not prevent recurrent ACS by vulnerable plaque rupture
  • LV function is well preserved in NSTE ACS patients,especially for anterior wall ischenmia.



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Trials of Invasive versus Conservative
Management of UA/NSTEMI
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Invasive Management of UA/NSTEMI 
Meta-analysis: ¯ Death/MI at 17 mo. F/U
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Invasive Rx in ACS: Early and Late Mortality
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FRISC-II Mortality at One-Year
Invasive Vs. Conservative Management Strategies
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TACTICS-TIMI-18: Primary Endpoint:
Death, MI, Rehospitalization for ACS at 6 Months
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Cumulative risk of death, MI
or refractory angina
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Wide Variations in Timing of Interventions in Invasive Arm of Major Trials
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ISAR COOL- Limitations
  • Very small single center study
  • Only 36 primary outcome events in entire trial
  • No difference in mortality
  • No measure of baseline CKMB obscuring the diagnosis of MI in Early Angiography group in patients with baseline MI
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Risk indicators of use for selection of patients
 for early invasive treatment  in ACS
  • Age(>65 years)
  • Coronary risk factors-diabetes mellitus,hyperlipidemia,hypertension,smoking
  • Renal dysfunction- reduced GFR(<95mL/min, even higher risk at <60mL/min)
  • Previous myocardial infarction, previous angina pectoris
  • Cardiac dysfunction-elevated NT-proBNP (>240,even higher risk at >2000ng/L)
  • History of chest pain at rest or during last 24 h or recurrences despite treatment
  • Myocardial ischemia-ST segment depression (³0.1mV,even higher risk at ³0.2mV)
  • Coronary thrombosis-elevated troponin (-T ³ 0.01,even higher risk at ³0.5)
  • Inflammation-elevation of CRP(>10mg/ L)
  • Severe coronary artery lesion at coronary angiography
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ACC/AHA Guidelines
  • Recurrent angina/ischemia at rest or with low-level activities
  •   despite intensive anti-ischemic therapy
  • Elevated troponin T or I
  • New or presumably new ST-segment depression
  • Recurrent angina/ischemia with CHF symptoms, an S3 gallop,
  •   pulmonary edema, worsening rales, or new or worsening MR
  • High-risk findings on nonivasive stress testing
  • Depressed LV systolic function( e.g., EF<0.40 on noninvasive study)
  • Hemodynamic instability
  • Sustained ventricular tachycardia
  • PCI within 6 months
  • Prior CABG
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Unresolved issues
  • The optimal period of pretreatment or stablization before angiography and revascularization


  • The extent of revascularization (culprit lesion vs. complete revascularization)
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"An International Randomized Trial of"

  • An International Randomized Trial of
  • Early Versus Delayed Invasive Strategies
  • in Patients with Non-ST Segment Elevation
  • Acute Coronary Syndromes





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TIMACS:  Timing of Intervention
  • Study Objective:
    • To compare the relative  efficacy, safety and cost effectiveness of early versus late (standard delayed) angiography and intervention

  • Addresses the currently unresolved question:
    • “When is the most appropriate time to take patients to the cath lab?”.

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Conclusion
  • Early invasive stratigy should be used in selected (high risk)patients with non-st elevating ACS
  • Risk stratification is helpful
  • Intervention for some patients with NSTE ACS should be used the earlier ,the better