No-reflow in native coronaries and vein grafts: the role of drugs and distal protection

Author(s):  
Giovanni Luigi De Maria ◽  
Adrian Banning

Restoration of normal coronary bloodflow and relieving myocardial ischaemia is the main goal of percutaneous coronary intervention (PCI). However, whilst reducing an epicardial coronary stenosis by balloon dilatation may appear to be a relatively easy task, subsequent detrimental changes in bloodflow can paradoxically result in reduced/impaired myocardial perfusion. This condition of mismatch between post-PCI epicardial coronary patency and impaired myocardial reperfusion is defined as slow-flow or no-reflow. It is typically caused by and related to the presence of a damaged, dysfunctional, and/or obstructed coronary microvasculature. When no-reflow occurs, it has an adverse effect on the subsequent mid- and long-term prognosis as it is associated with a higher risk of reinfarction, arrhythmias, heart failure, and a higher in-hospital and long-term cardiac mortality. Frustratingly, nearly four decades after the first PCI, there is still uncertainty about the pathophysiology of no-reflow and a need to define successful prevention and treatment strategies.

2020 ◽  
Vol 10 (1) ◽  
pp. 106
Author(s):  
Anton Gard ◽  
Bertil Lindahl ◽  
Nermin Hadziosmanovic ◽  
Tomasz Baron

Aim: Our aim was to investigate the characteristics, treatment and prognosis of patients with myocardial infarction (MI) treated outside a cardiology department (CD), compared with MI patients treated at a CD. Methods: A cohort of 1310 patients diagnosed with MI at eight Swedish hospitals in 2011 were included in this observational study. Patients were followed regarding all-cause mortality until 2018. Results: A total of 235 patients, exclusively treated outside CDs, were identified. These patients had more non-cardiac comorbidities, were older (mean age 83.7 vs. 73.1 years) and had less often type 1 MIs (33.2% vs. 74.2%), in comparison with the CD patients. Advanced age and an absence of chest pain were the strongest predictors of non-CD care. Only 3.8% of non-CD patients were investigated with coronary angiography and they were also prescribed secondary preventive pharmacological treatments to a lesser degree, with only 32.3% having statin therapy at discharge. The all-cause mortality was higher in non-CD patients, also after adjustment for baseline parameters, both at 30 days (hazard ratio (HR) 2.28; 95% confidence interval (CI) 1.62–3.22), one year (HR 1.82; 95% CI 1.39–2.36) and five years (HR 1.62; 95% CI 1.32–1.98). Conclusions: MI treatment outside CDs is associated with an adverse short- and long-term prognosis. An improved use of percutaneous coronary intervention (PCI) and secondary preventive pharmacological treatment might improve the long-term prognosis in these patients.


Author(s):  
Igor Ribeiro de Castro Bienert ◽  
Expedito E. Ribeiro ◽  
Luiz J. Kajita ◽  
Marco Antonio Perin ◽  
Carlos A.H. Campos ◽  
...  

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Kitae Kim ◽  
Shuichiro Kaji ◽  
Takeshi Kitai ◽  
Atsushi Kobori ◽  
Natsuhiko Ehara ◽  
...  

Introduction: Ischemic mitral regurgitation (IMR) portends a poor prognosis during long-term follow-up and has been identified as an independent predictor of heart failure (HF) and reduced long-term survival. Despite the poor prognosis with chronic IMR, few studies report the impact of IMR on long-term prognosis in patients with acute myocardial infarction (AMI) who underwent primary percutaneous coronary intervention (PCI). Methods: We studied 674 consecutive patients with AMI from 2000 to 2006 who underwent emergent coronary angiography and primary PCI, and who were assessed by transthoracic echocardiography during index hospitalization. Primary outcomes were cardiac death and the development of HF during follow-up. Results: The mean age of the study patients was 65±12 years and 534 patients (79%) were men. Sixty patients (9%) had moderate or severe MR before hospital discharge. Patients with moderate or severe MR were older, more frequently non-smoker, and more likely to have Killip class ≥2, lower ejection fraction, larger left ventricular end-diastolic volume, compared with patients with no or mild MR. During the mean follow-up period of 5.7±3.6 years, 35 cardiac deaths and 53 episodes of HF occurred. Kaplan-Meier analysis revealed that patients with moderate or severe MR had significantly increased risk for cardiac death (P<0.001), and HF (P<0.001), compared with patients with no or mild MR. Multivariate analysis revealed that moderate or severe MR was the significant predictor of the development of cardiac death (P<0.001), and the development of HF (P=0.006), independently of age, gender, history of MI, Killip class ≥2, initial TIMI flow≤1, peak CPK level, ejection fraction. Conclusions: Moderate or severe IMR detected early after AMI was independently associated with adverse cardiac events during long-term follow-up in patients with AMI after primary PCI.


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