scholarly journals Clinical Importance of Microvascular Obstruction on Contrast-Enhanced MRI in Reperfused Acute Myocardial Infarction

2008 ◽  
Vol 72 (2) ◽  
pp. 200-204 ◽  
Author(s):  
Michinobu Nagao ◽  
Hiroshi Higashino ◽  
Hiroshi Matsuoka ◽  
Hideo Kawakami ◽  
Teruhito Mochizuki ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Microvascular Obstruction ◽  
Clinical Importance ◽  
Enhanced Mri ◽  
Reperfused Acute Myocardial Infarction ◽  
Contrast Enhanced ◽  
Contrast Enhanced Mri

scholarly journals Early Contrast-Enhanced MRI Predicts Late Functional Recovery After Reperfused Myocardial Infarction

Circulation ◽  
1999 ◽  
Vol 99 (6) ◽  
pp. 744-750 ◽  
Author(s):  
Walter J. Rogers ◽  
Christopher M. Kramer ◽  
Gennady Geskin ◽  
Yong-Lin Hu ◽  
Therese M. Theobald ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Functional Recovery ◽  
Reperfused Myocardial Infarction ◽  
Enhanced Mri ◽  
Contrast Enhanced ◽  
Contrast Enhanced Mri

scholarly journals Native T1 mapping for characterization of acute and chronic myocardial infarction in swine: Comparison with contrast-enhanced MRI

2018 ◽  
Vol 47 (5) ◽  
pp. spcone-spcone
Author(s):  
Xi Liu ◽  
Jiang-long Hou ◽  
Zhi-gang Yang ◽  
Chun-chao Xia ◽  
Lin-jun Xie ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
T1 Mapping ◽  
Chronic Myocardial Infarction ◽  
Native T1 ◽  
Enhanced Mri ◽  
Contrast Enhanced ◽  
Contrast Enhanced Mri

Microvascular Obstruction and Myocardial Function after Acute Myocardial Infarction: Assessment by Using Contrast-enhanced Cine MR Imaging

Radiology ◽  
2006 ◽  
Vol 240 (2) ◽  
pp. 529-536 ◽  
Author(s):  
Gilbert L. Raff ◽  
William W. O'Neill ◽  
Ralph E. Gentry ◽  
Ammar Dulli ◽  
Kostaki G. Bis ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Mr Imaging ◽  
Microvascular Obstruction ◽  
Myocardial Function ◽  
Cine Mr ◽  
Contrast Enhanced

scholarly journals Serial transthoracic coronary Doppler shows complete reversibility of microvascular obstruction pattern at one month after reperfused acute myocardial infarction.

2017 ◽  
Vol 19 (1) ◽  
pp. 45 ◽  
Author(s):  
Camelia Diana Ober ◽  
Mihai Claudiu Ober ◽  
Adrian Corneliu Iancu
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Time Course ◽  
Microvascular Obstruction ◽  
Prognostic Significance ◽  
Coronary Microcirculation ◽  
Anterior Myocardial Infarction ◽  
No Reflow ◽  
Reperfused Acute Myocardial Infarction ◽  
Deceleration Time

“No reflow” phenomenon is a common complication with significant prognostic repercussions after reperfused acute myocardial infarction. Previous studies have shown the feasibility and prognostic significance of coronary microcirculation assessment by transthoracic Doppler of left anterior descending artery (LAD). The aim of the study was to evaluate the time course of the coronary microcirculation status after acute anterior myocardial infarction reperfused by primary angioplasty with stent on LAD. Material and methods: Twenty-three patients underwent transthoracic echocardiography at 3 days (M0) and one month (M1) after reperfusion, with LAD flow analysis (peak systolic and diastolic velocities, diastolic deceleration time and systolic flow reversal). The patients were divided into two groups, of good reperfusion and “no reflow”, by a 600 ms cut-off of the M0 diastolic deceleration time, previously shown to best discriminate between the two microvascular reperfusion states. Results: Of all patients, 21 survived to M1 and were included in analysis. Microvascular obstruction, as defined, was present in 50% of patients at M0 and it was associated with significantly worse ejection fraction both at M0 and M1 (p=0.01 and 0.04, respectively). Killip class at admission was the only independent predictor of “no reflow”. DDT increased from 661.9±339.3 at M0 to 948.2±201.8 at M1 (p=0.0003). In patients with initial “no reflow”, DDT increased to normal values at M1 (876.2±167.7 vs. 346.3±133.9 at M0, p<0.0001). In these patients, the PDV/PSV ratio decreased at one month (1.91±0.37 vs. 2.70±1.22, p=0.06), by decrease of PDV (0.29±0.06 vs. 0.40±0.19, p=0.03). Conclusions: The parameters of coronary microcirculatory impedance improve significantly at one month after infarction, suggesting delayed full reversibility of the microvascular obstruction.

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