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  • In a nutshell: The...

In a nutshell: The hottest developments in the field of cardiology in 2020. Section 5. Coronary artery disease - Page 4

Written By : dr. Abhimanyu Uppal |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2020-12-31T11:00:04+05:30  |  Updated On 31 Dec 2020 12:55 PM IST
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7. HOST-REDUCE-POLYTECH-ACS (Harmonizing Optimal Strategy for Treatment of coronary artery diseases-comparison of REDUCtion of prasugrEl dose or POLYmer TECHnology in ACS patients) trial

After 1 month of regular-dose DAPT, reduced-dose prasugrel (5 mg) is superior to regular-dose prasugrel (10 mg) when used along with low-dose aspirin for ACS PCI.

Patients were randomized in a 2x2 factorial design to: a) either prasugrel 5 mg daily or 10 mg daily, or b) durable polymer (DP) vs. bioabsorbable polymer (BP) drug-eluting stent (DES). Patients were stratified according to CHADS2 score (2 points or ≥3 points).

The recommended protocol was that all patients receive 300 mg aspirin and a loading dose of 60 mg prasugrel before PCI. After PCI, all patients in both groups were given aspirin 100 mg daily with 10 mg of maintenance prasugrel until the 1-month follow-up.

The results of this trial indicate that reduced-dose prasugrel (5 mg) is superior to regular-dose prasugrel (10 mg) when used along with low-dose aspirin for ACS PCI after 1 month of procedure.

In addition, BP-DES met the primary criteria for noninferiority compared with DP-DES, but device-related endpoints, including the need for repeat procedures, were lower in the DP-DES arm.

Source: Lancet journal: Kim HS, Kang J, Hwang D, et al. Prasugrel-based de-escalation of dual antiplatelet therapy after percutaneous coronary intervention in patients with acute coronary syndrome (HOST-REDUCE-POLYTECH-ACS): an open-label, multicentre, non-inferiority randomised trial. Lancet 2020; Aug 31 https://doi.org/10.1016/S0140-6736(20)31791-8


8. PRECOMBAT (Premier of Randomized Comparison of Bypass Surgery vs. Angioplasty Using Sirolimus-Eluting Stent in Patients With Left Main Coronary Artery Disease) study: Ten-Year Outcomes

PCI with sirolimus-eluting stents was noninferior to CABG among patients with severe left main disease.

Patients with unprotected left main coronary artery stenosis were randomized to PCI with sirolimus-eluting stents (n = 300) versus CABG (n = 300).

Major adverse cardiac and cerebrovascular events (MACCE) were similar between the groups at 10 years.

During extended follow-up, there was possible effect modification for MACCE, favoring CABG versus PCI for left main plus three-vessel disease.

This is consistent with other lines of evidence, which revealed that CABG is likely preferential to PCI among patients with high SYNTAX score.

This study was conducted exclusively in Koreans and might be less applicable to other populations.

While CABG is still considered the standard of care for revascularization of left main coronary stenosis, accumulating data support the use of PCI for select patients.

So how near we are to solving the riddle between CABG and PCI in Left main disease?

This 10-year follow-up of the randomised PRECOMBAT trial adds to the already published long-term randomised comparisons of PCI vs. CABG for LM disease, including the data from SYNTAX (10 years), EXCEL (5 years) and NOBLE (5 years) trials.

At large, these trials seem to convey a similar set of messages. First, all-cause mortality appears to be similar in the long term, with the only exception being the EXCEL trial, while all trials (including EXCEL) showed no difference in terms of cardiac mortality.

Second, CABG is consistently associated with a reduction in repeat revascularisations, which given recent data connecting repeat revascularisations with mortality, may impact clinical decision making. Third, the reported inconsistencies in the effect of CABG vs. PCI on the incidence of MI may largely be dependent on the trial’s MI definition.

When interpreting the totality of evidence from these trials, at least the following two sets of potential effect modifiers may need to be kept in mind. First, the extent of the underlying coronary artery disease is of importance, as CABG seems to be associated with better results compared with PCI in cases of a more diffuse disease.

Second, variations in the PCI arm such as the distal LM bifurcation stenting technique, use of intracoronary imaging and the operator’s LM PCI-specific expertise could have an impact on the overall results.

In summary, as interventionalists are gaining more widespread experience with LM PCI, careful patient (lesion) selection and standardised improvements in PCI technique remain paramount.

Source: Circulation: Park SJ, Park DW, Ahn JM, et al. Extended Follow-Up of the PRECOMBAT Trial. Circulation 2020; Mar 30


latest cardiology developmentslatest cardiology trialsCoronary artery diseaseantiplateletsLeft main coronary artery diseasebifurcation lesions
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dr. Abhimanyu Uppal
dr. Abhimanyu Uppal

    MBBS, MD , DM Cardiology

    Dr Abhimanyu Uppal completed his M. B. B. S and M. D. in internal medicine from the SMS Medical College in Jaipur. He got selected for D. M. Cardiology course in the prestigious G. B. Pant Institute, New Delhi in 2017. After completing his D. M. Degree he continues to work as Post DM senior resident in G. B. pant hospital. He is actively involved in various research activities of the department and has assisted and performed a multitude of cardiac procedures under the guidance of esteemed faculty of this Institute. He can be contacted at editorial@medicaldialogues.in.

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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