Pci vs tlt 2
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JOURNAL CLUBTwo-year follow-up data from the STEPP-AMI
study: A prospective, observational, multicenterstudy comparing tenecteplase-facilitated PCI versus
primary PCI in Indian patients with STEMI
i n d i a n h e a r t j o u r n a l 6 8 ( 2 0 1 6 ) 1 6 9 – 1 7 3
DR MALLESWARA RAO
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INTRODUCTION
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• STEMI is a life threatening manifestation of CAD requiring timely reperfusion
• incidence of STEMI is higher in the Indian population when compared to developed countries
• Current recommendations maintain PCI as the treatment of choice , contingent upon rapid initiation of treatment at centers with a skilled PCI laboratory within suggested timelines
• unavailability of primary PCI capable hospitals across India and delays in transport -<10% of patients with STEMI-PCI in India
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• patients who do reach the hospital early still have to deal with other issues, such as arranging for finances, as most Indian patients pay out-ofpocket
• introduction of fibrin-specific lytic agents like tenecteplase (TNK) has improved the IRA patency rates significantly.
• Rapid fibrinolytic treatment improved the outcomes in patients treated within an hour of symptom onset, with tapering benefits after 3 hrs
• fibrinolysis -high rates of reocclusion of IRA• initial bolus lysis followed by early CAG within 3–24 h
of fibrinolysis, with an appropriate PCI ='pharmacoinvasive strategy-good alternative especially in a developing country such as India.
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Comparison of primary angioplasty and pre-hospital fibrinolysis in acute myocardial infarction (CAPTIM) trial: a 5-year follow-up• primary angioplasty (n = 421) VS pre-hospital fibrinolysis (rt-PA) with
immediate transfer to a centre with interventional facilities (n = 419)all-cause mortality at 5 years • 9.7% in the pre-hospital fibrinolysis group • 12.6% in PPCI [ P = 0.18]. patients included within 2 h, 5 year mortality • 5.8% in the pre-hospital fibrinolysis group • 11.1% in PPCI [HR 0.50 ( P = 0.04], Patients included after 2 h, 5 year mortality • 14.5 vs 14.4% [ P = 0.92].
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PRESENT STUDY• prospective, observational, multicenter pilot study,• between August 2011 and May 2013• Study sites, which were capable of performing 24/7 primary
PCI, were selected from Tamilnadu,Karnataka , and Kerala • 200 patients • observational study, the treatment options were chosen
entirely by the patient and the attendants• some patients who presented outside the recommended
timelines for thrombolysis have received lytic therapy .
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AIM• assess the safety, efficacy, and
feasibility of a pharmacoinvasive strategy in comparison toprimary PCI in STEMI
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• primary endpoint • set at 30 days • composite of death, cardiogenic shock, reinfarction, repeat revascularization, and congestive heart failure, and extended to 2 years
• Safety end points are bleeding assessed using theTIMI classification at 30 day
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• Baseline characteristics were no different between both groups, except more patients in arm B were in killip's class I.
• 6.7% (n = 3) patients in arm A had insignificant disease; hence no intervention was performed for them
• 100% of patients in arm B required angioplasty and stent implantation.
pharmacoinvasive arm (arm 'A') -
45 patients
PPCI arm (arm 'B') 155 patients
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• Patients in arm A also had better TIMI flow at CAG (TIMI 3 flow in 27.9%), higher radial procedures (76.7%), more IRA patency (82.2%), and less thrombus burden.
• In arm 'A', 12.1% -failed thrombolysis.
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bleeding outcomes • 2.2% vs. 2.6%, 'p' not significant). • efficacy end points are studied at 30 days, 3 months, 6 months, 1 year, and
2 years-no difference • There is trend of benefit for arm B in the initial few months • Primary endpoint at 30 days -trend toward benefit in the primary PCI group
(11.1% vs.3.9%, p = 0.07, RR = 2.8).• At the end of 2-year follow-up, the initial benefit from PPCI seems to be
narrowed as more events have occurred in PPCI group (A-17.8% vs. B-13.6%, p = 0.47, RR = 1.31;).
• The additions of events in the primary endpoint of PPCI group are mainly due to death and repeat revascularization
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• This may be partly due to the fact that 6.7%of patients in arm A did not require a stent placement due to insignificant disease at the angiogram, which means they are at no risk of stent thrombosis orrestenosis.
• non-urgent basis on which the angioplasty was performed in arm A may also have influenced the primary endpoint over a period of time, but this fact needs further large studies to provide comprehensive evidence.
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CONCLUSION• fibrinolysis followed by an early coronary angiogram within 3–24 h with PCI, if appropriate, resulted in similar outcomes whencompared to primary PCI in patients with STEMI at 2-yearfollow-up.
• These findings lend further support to the adoptionof a pharmacoinvasive strategy where patient and system related delays are inherent
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THANK YOU