OBJECTIVES: The purpose of this study was to evaluate the impact on myocardial perfusion and infarct size as assessed by contrast-enhanced magnetic resonance imaging (CE-MRI) of a manual thrombectomy device, Export Medtronic (EM) (Medtronic Inc., Minneapolis, Minnesota), as adjunctive therapy in primary percutaneous coronary intervention (PPCI) in a subset of patients with anterior ST-segment elevation myocardial infarction (STEMI). BACKGROUND: PPCI may cause thrombus dislodgment, leading to microvascular damage. METHODS:One hundred seventy-five STEMI patients were randomly assigned to standard percutaneous coronary intervention (PCI) (n = 87) or EM-PCI (n = 88). The primary end points were the occurrence of myocardial blush grade > or =2 and the rate of 90-min ST-segment resolution >70%. The CE-MRI substudy was performed in 75 patients withanterior STEMI to assess microvascular obstruction and infarct size. RESULTS:Myocardial blush grade > or =2 and ST-segment resolution occurred more frequently in the EM-PCI group (88% vs. 60%, p = 0.001; and 64% vs. 39%, p = 0.001). In the acute phase, microvascular obstruction extent was significantly lower in the EM-PCI group and at 3 months, infarct size was significantly reduced only in the EM-PCI group. A lower incidence of cardiac death in the EM-PCI group (4.6% vs. 0%, log-rank test p = 0.02) was observed at 9 months. CONCLUSIONS: Thrombectomy prevents thrombus embolization and preserves microvascular integrity reducing infarct size, and it therefore represents an useful adjunctive therapy in PPCI.
RCT Entities:
OBJECTIVES: The purpose of this study was to evaluate the impact on myocardial perfusion and infarct size as assessed by contrast-enhanced magnetic resonance imaging (CE-MRI) of a manual thrombectomy device, Export Medtronic (EM) (Medtronic Inc., Minneapolis, Minnesota), as adjunctive therapy in primary percutaneous coronary intervention (PPCI) in a subset of patients with anterior ST-segment elevation myocardial infarction (STEMI). BACKGROUND: PPCI may cause thrombus dislodgment, leading to microvascular damage. METHODS: One hundred seventy-five STEMI patients were randomly assigned to standard percutaneous coronary intervention (PCI) (n = 87) or EM-PCI (n = 88). The primary end points were the occurrence of myocardial blush grade > or =2 and the rate of 90-min ST-segment resolution >70%. The CE-MRI substudy was performed in 75 patients with anterior STEMI to assess microvascular obstruction and infarct size. RESULTS:Myocardial blush grade > or =2 and ST-segment resolution occurred more frequently in the EM-PCI group (88% vs. 60%, p = 0.001; and 64% vs. 39%, p = 0.001). In the acute phase, microvascular obstruction extent was significantly lower in the EM-PCI group and at 3 months, infarct size was significantly reduced only in the EM-PCI group. A lower incidence of cardiac death in the EM-PCI group (4.6% vs. 0%, log-rank test p = 0.02) was observed at 9 months. CONCLUSIONS: Thrombectomy prevents thrombus embolization and preserves microvascular integrity reducing infarct size, and it therefore represents an useful adjunctive therapy in PPCI.
Authors: Erica Dall'Armellina; Theodoros D Karamitsos; Stefan Neubauer; Robin P Choudhury Journal: Nat Rev Cardiol Date: 2010-09-21 Impact factor: 32.419
Authors: Eliano Pio Navarese; Giuseppe Tarantini; Giuseppe Musumeci; Massimo Napodano; Roberta Rossini; Mariusz Kowalewski; Anna Szczesniak; Michalina Kołodziejczak; Jacek Kubica Journal: Am J Cardiovasc Dis Date: 2013-08-16
Authors: Eric A Secemsky; Enrico G Ferro; Sunil V Rao; Ajay Kirtane; Hector Tamez; Pearl Zakroysky; Daniel Wojdyla; Steven M Bradley; David J Cohen; Robert W Yeh Journal: JAMA Cardiol Date: 2019-02-01 Impact factor: 14.676