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Myocardial salvage after ST-segment-elevation myocardial infarction: comparison between prasugrel and clopidogrel in the presence or absence of high-residual platelet reactivity

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Journal of Nuclear Cardiology Aims and scope

Abstract

Background

The effect of prasugrel over clopidogrel on myocardial salvage in ST-segment-elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (p-PCI) is not fully elucidated.

Methods

Among 854 consecutive STEMI patients who underwent p-PCI, 446 patients were evaluated by two-phase (7 days and 3 months) single-photo emission computed tomography (SPECT). Patients were divided into two groups based on the loading P2Y12 inhibitor. The clopidogrel group was further divided based on the result of platelet function testing. Thus, the prasugrel group included 227 patients; the clopidogrel without high-residual platelet reactivity (HRPR) group, 109 patients; and the clopidogrel with HRPR group, 107 patients. The primary endpoint was the Myocardial Salvage Index (MSI), determined by SPECT.

Results

The incidence of final TIMI 0/1 and TIMI myocardial perfusion grade 0/1 was higher in the clopidogrel with HRPR group (0.9%, 1.8%, and 7.5%, P =  .002; 19.8%, 29.4%, and 41.1%, P = .0002, in the prasugrel, clopidogrel without HRPR, and clopidogrel with HRPR groups, respectively). The MSI was significantly lower in the clopidogrel with HRPR group (48% [27-66], 44% [30-72], and 36% [15-55], P =  .006, respectively).

Conclusions

Prasugrel in STEMI patients was associated with an increased MSI compared with clopidogrel in the presence of HRPR.

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Abbreviations

AAR:

Area at risk

BMIPP:

123I-beta-methyl-p-iodophenyl pentadecanoic acid

HRPR:

High-residual platelet reactivity

MSI:

Myocardial Salvage Index

PFT:

Platelet function testing

p-PCI:

Primary percutaneous coronary intervention

SPECT:

Single-photo emission computed tomography

STEMI:

ST-segment-elevation myocardial infarction

Tc:

99mTechnetium

TPD:

Total perfusion deficit

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Disclosures

Dr. Ishii received lecture fees from Astellas Pharma Inc., Bayer Pharmaceutical Co., Ltd., Daiichi-Sankyo Pharma Inc., and MSD K. K. Dr. Murohara received lecture fees from Bayer Yakuhin., Ltd., Daiichi-Sankyo Co., Ltd., MSD K. K., Mitsubishi Tanabe Pharma Co., Nippon Boehringer Ingelheim Co., Ltd. Dr. Yoshida, Takagi, Morishima, Tanaka, Morita, Kanzaki, Nagai, Watanabe, Furui, Shibata, Yoshioka, Yamauchi, Komeyama, Sugiyama, and Tsuboi have nothing to disclose.

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Correspondence to Ruka Yoshida MD.

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This work was not supported by any funding. Department of Cardiology, Nagoya University Graduate School of Medicine received research Grant from Astellas Pharma Inc., Daiichi-Sankyo Co., Ltd., Dainippon Sumitomo Pharma Co., Ltd., Kowa Co., Ltd., MSD K. K., Mitsubishi Tanabe Pharma Co., Nippon Boehringer Ingelheim Co., Ltd., Pfizer Japan Inc., and Teijin Pharma Ltd.

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Yoshida, R., Takagi, K., Ishii, H. et al. Myocardial salvage after ST-segment-elevation myocardial infarction: comparison between prasugrel and clopidogrel in the presence or absence of high-residual platelet reactivity. J. Nucl. Cardiol. 28, 1422–1434 (2021). https://doi.org/10.1007/s12350-019-01852-3

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