No reflow following primary percutaneous coronary intervention (PCI) is a serious complication in the treatment of acute myocardial infarction. No reflow in some patients is reversible (transient no reflow), whereas no reflow in others persists until the end of the procedure (persistent no reflow). The aim of this study was to identify clinical features of transient no reflow following primary PCI. Consecutive patients with no reflow (n = 123) were enrolled following primary PCI. Among them, 59 patients were in the transient group and 64 in the persistent group. We compared clinical features and hospital outcomes between the two groups. Multivariate logistic regression analysis was performed to identify the determinants of transient no reflow. The transient group had a lower rate of in-hospital cardiac death than the persistent group (0 vs. 6.4 %, relatively, P = 0.018). There was a trend for a shorter length of hospital stay in the transient group. Multivariate logistic regression analysis identified initial thrombolysis in myocardial infarction (TIMI) flow grade 3 (OR 6.239, 95 % CI 1.727-22.541, P = 0.005) and a higher estimated glomerular filtration rate (OR 1.204, 95 % CI 1.006-1.440, P = 0.042) as independent predictors of transient no reflow. Transient no reflow tended to be associated with TIMI thrombus grade ≤3 (OR 2.879, 95 % CI 0.928-8.931, P = 0.067). In conclusion, initial TIMI flow grade 3 and preserved renal function were associated with recovery from no reflow. Initial angiographic finding such as TIMI flow or TIMI thrombus grade might be an important predictor of recovery from the no-reflow phenomenon.
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http://dx.doi.org/10.1007/s00380-013-0379-1 | DOI Listing |
Lasers Med Sci
December 2024
Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3, Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
Excimer laser coronary angioplasty (ELCA) in percutaneous coronary intervention (PCI) is safe and effective. However, thrombotic complications after ELCA occasionally occur. This study aimed to evaluate the impact of lipid-rich plaque in both in-stent restenosis (ISR) and de novo lesions on thrombus formation and transient no-reflow after ELCA.
View Article and Find Full Text PDFNeurol Res Pract
November 2024
Department of Neurology, University Hospital Wurzburg, Josef-Schneider-Str. 11, 97080, Wurzburg, Germany.
Background: Despite high recanalization rates of > 90% after endovascular thrombectomy (EVT) clinical outcome in around 50% of treated acute ischemic stroke (AIS) patients is still poor. Novel treatments augmenting the beneficial effects of recanalization are eagerly awaited, but this requires mechanistic insights to explain and overcome futile recanalization.
Main Body: At least two mechanisms contribute to futile recanalization after cerebral large vessel occlusions (LVO): (i) the no reflow phenomenon as evidenced by randomly distributed areas without return of blood flow despite reperfusion of large cerebral arteries, and (ii) ischemia/reperfusion (I/R) injury, the paradoxically harmful aspect of blood flow return in transiently ischemic organs.
Materials (Basel)
June 2024
Chair of Microintegration and Reliability, Saarland University, 66123 Saarbrucken, Germany.
Multilayer ceramic capacitors (MLCCs) are critical components when thermal processes such as reflow desoldering are used during rework of electronic assemblies. The capacitor's ferroelectric BaTiO body is very brittle. Therefore, thermomechanical stresses can cause crack formation and create conductive paths that may short the capacitor.
View Article and Find Full Text PDFCommun Biol
March 2024
Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China.
Ischemic stroke produces the highest adult disability. Despite successful recanalization, no-reflow, or the futile restoration of the cerebral perfusion after ischemia, is a major cause of brain lesion expansion. However, the vascular mechanism underlying this hypoperfusion is largely unknown, and no approach is available to actively promote optimal reperfusion to treat no-reflow.
View Article and Find Full Text PDFIran J Basic Med Sci
January 2024
Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
Ischemic disorders, including myocardial infarction, cerebral ischemia, and peripheral vascular impairment, are the main common reasons for debilitating diseases and death in Western cultures. Ischemia occurs when blood circulation is reduced in tissues. Reperfusion, although commanded to return oxygen to ischemic tissues, generates paradoxical tissue responses.
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