alexa Angiographic assessment of myocardial perfusion in Tako-Tsubo syndrome.


Journal of Clinical & Experimental Cardiology

Author(s): De Caterina AR, Leone AM, Galiuto L, Basile E, Fedele E, , De Caterina AR, Leone AM, Galiuto L, Basile E, Fedele E,

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Abstract OBJECTIVES: To angiographically assess myocardial perfusion in patients with Tako-Tsubo syndrome (TTS) in comparison with control individuals and patients with ST-elevation myocardial infarction (STEMI). BACKGROUND: Coronary microvascular dysfunction has been proposed as the pathophysiological mechanism underlying TTS. METHODS: We retrospectively selected consecutive TTS patients showing typical left ventricular (LV) apical dysfunction admitted to our Department in the period 2007-2011 (n=25). We also enrolled an age and gender-matched control group showing normal coronary arteries (CTR, n=25), patients with STEMI undergoing primary percutaneous intervention with myocardial reperfusion (SR, n=25) or microvascular obstruction (SMVO, n=25). TIMI flow, TIMI frame count (TFC) and both qualitative and quantitative myocardial blush grade in LV apex were assessed. Specifically, myocardial perfusion was quantitatively evaluated using 'Quantitative Blush Evaluator' (QuBE), an open source software previously validated in the setting of STEMI. RESULTS: In TTS, TIMI flow on the LAD was significantly lower and TFC significantly higher compared to CTR and SR (p=0.008 for both), while it did not significantly differ compared to SMVO (p=0.06). In TTS, MBG was significantly lower than that in CTR and SR (p=0.001 for both), while it was significantly higher than that in SMVO (p<0.001). In TTS, QuBE score was significantly lower than that in CTR and SR (p=0.001 for both) and higher than in SMVO (p=0.02). CONCLUSIONS: Our data indicate that myocardial perfusion assessed during angiography is more impaired in patients with TTS than in patients with STEMI exhibiting myocardial reperfusion, while it is less impaired than in patients with STEMI exhibiting MVO. © 2013. This article was published in Int J Cardiol and referenced in Journal of Clinical & Experimental Cardiology

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