This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Google Scholar Articles by Niccoli, G. Articles by Crea, F. PubMed Articles by Niccoli, G. Articles by Crea, F. Related Collections Related Article

STATE-OF-THE-ART PAPER

Myocardial No-Reflow in Humans

Institute of Cardiology, Catholic University of the Sacred Heart, Rome, Italy

Manuscript received July 24, 2008; revised manuscript received March 17, 2009, accepted March 17, 2009.

^_* Reprint requests and correspondence: Dr. Giampaolo Niccoli, Institute of Cardiology, Catholic University of the Sacred Heart, L.go Agostino Gemelli, 8, Rome 00168, Italy (Email: gniccoli73{at}hotmail.it).

In a variable proportion of patients presenting with ST-segment elevation myocardial infarction, ranging from 5% to 50%, primary percutaneous coronary intervention achieves epicardial coronary artery reperfusion but not myocardial reperfusion, a condition known as no-reflow. Of note, no-reflow is associated with a worse prognosis at follow-up. The phenomenon has a multifactorial pathogenesis including: distal embolization, ischemia-reperfusion injury, and individual predisposition of coronary microcirculation to injury. Moreover, it is spontaneously reversible in some patients, thus suggesting that it might be amenable to treatment also when we fail to prevent it. Several recent studies have shown that biomarkers and other easily available clinical parameters can predict the risk of no-reflow and can help in the assessment of the multiple mechanisms of the phenomenon. Several therapeutic strategies have been tested for the prevention and treatment of no-reflow. In particular, thrombus aspiration before stent implantation prevents distal embolization and has been recently shown to improve myocardial perfusion and clinical outcome as compared with the standard procedure. However, it is conceivable that the relevance of each pathogenetic component of no-reflow is different in different patients, thus explaining the occurrence of no-reflow despite the use of mechanical thrombus aspiration. Thus, in this review article, for the first time, we propose a personalized management of no-reflow on the basis of the assessment of the prevailing mechanisms of no-reflow operating in each patient.

Key Words: microcirculation • myocardial no-reflow • primary percutaneous coronary intervention • ST-segment elevation myocardial infarction

Abbreviations and Acronyms   ATP = adenosine triphosphate   CMR = cardiac magnetic resonance   ECG = electrocardiogram/electrocardiographic   ET = endothelin   IR = ischemia-reperfusion   IRA = infarct-related artery   LV = left ventricle   MBG = myocardial blush grade   MCE = myocardial contrast echocardiography   m-PTP = mitochondrial permeability transition pore   PPCI = primary percutaneous coronary intervention   STEMI = ST-segment elevation myocardial infarction   STR = ST-segment elevation resolution   TIMI = Thrombolysis In Myocardial Infarction   TxA2 = thromboxane-A2

Related Article

Inside This Issue
J. Am. Coll. Cardiol. 2009 54: A28. [Full Text] [PDF]

This article has been cited by other articles:

				G. Heusch, P. Kleinbongard, D. Bose, B. Levkau, M. Haude, R. Schulz, and R. Erbel Coronary Microembolization: From Bedside to Bench and Back to Bedside Circulation, November 3, 2009; 120(18): 1822 - 1836. [Abstract] [Full Text] [PDF]

				F. Burzotta, M. De Vita, Y. L. Gu, T. Isshiki, T. Lefevre, A. Kaltoft, D. Dudek, G. Sardella, P. S. Orrego, D. Antoniucci, et al. Clinical impact of thrombectomy in acute ST-elevation myocardial infarction: an individual patient-data pooled analysis of 11 trials Eur. Heart J., September 2, 2009; (2009) ehp348v1. [Abstract] [Full Text] [PDF]

				E. Eeckhout Thrombectomy in acute ST-elevation myocardial infarction: keep it simple Eur. Heart J., September 2, 2009; (2009) ehp349v1. [Full Text] [PDF]