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Reviews in Cardiovascular Medicine Mar 2020Remote ischemic conditioning is usually associated with cardioprotective intervention against ischemia-reperfusion. However, the effect of remote ischemic... (Meta-Analysis)
Meta-Analysis
Remote ischemic conditioning is usually associated with cardioprotective intervention against ischemia-reperfusion. However, the effect of remote ischemic preconditioning (RIC-pre) completed before myocardial reperfusion with intermittent limb ischemia-reperfusion in patients with STEMI undergoing primary percutaneous coronary intervention (PPCI) is unclear. PubMed, EMBASE, and the Cochrane Library were fully searched from the beginning of each database up to September 2019 to find seven RCTs, a total of 2796 patients with STEMI undergoing PPCI with RIC-pre and 2818 patients with STEMI undergoing PPCI alone. No significant discrepancy in cardiac death was observed between RIC-pre and control groups (RR 1.03, 95% CI [0.76-1.41], = 0.83, I = 40%). The incidences of hospitalization for heart failure (RR 1.03, 95% CI [0.85-1.25], = 0.77, I = 0%), myocardial infarction (RR 0.86, 95% CI [0.59-1.26], = 0.44, I = 0%), and stroke (RR 1.04, 95% CI [0.62-1.77], = 0.87, I = 0%) were not decreased in RIC-pre group when compared with control group. Subgroup analysis revealed similar risk in clinical adverse events at long- and short-term follow-up between two groups. However, peak of creatine kinase-myocardial band (CK-MB) was reduced in RIC-pre group (SWD -0.42, 95% CI [-0.77, -0.07], = 0.02, I = 34%). RIC-pre tended to a low peak of CK-MB in patients with STEMI undergoing PPCI, but lacked significant beneficial effects on improving clinical outcomes at long- and short-term follow-up.
Topics: Aged; Aged, 80 and over; Evidence-Based Medicine; Female; Humans; Ischemic Preconditioning; Male; Middle Aged; Myocardial Reperfusion Injury; Percutaneous Coronary Intervention; Randomized Controlled Trials as Topic; Regional Blood Flow; Risk Assessment; Risk Factors; ST Elevation Myocardial Infarction; Treatment Outcome; Upper Extremity
PubMed: 32259908
DOI: 10.31083/j.rcm.2020.01.10 -
Circulation. Cardiovascular Quality and... Sep 2019Quality improvement initiatives have been developed to improve acute coronary syndrome care largely in high-income country settings. We sought to synthesize the effect...
BACKGROUND
Quality improvement initiatives have been developed to improve acute coronary syndrome care largely in high-income country settings. We sought to synthesize the effect size and quality of evidence from randomized controlled trials (RCTs) and nonrandomized studies for hospital-based acute coronary syndrome quality improvement interventions on clinical outcomes and process of care measures for their potential implementation in low- and middle-income country settings.
METHODS AND RESULTS
We conducted a bibliometric search of databases and trial registers and a hand search in 2016 and performed an updated search in May 2018 and May 2019. We performed data extraction, risk of bias assessment, and quality of evidence assessments in duplicate. We assessed differences in outcomes by study design comparing RCTs to nonrandomized quasi-experimental studies and by country income status. A meta-analysis was not feasible due to substantial, unexplained heterogeneity among the included studies, and thus, we present a qualitative synthesis. We screened 5858 records and included 32 studies (14 RCTs [n=109 763] and 18 nonrandomized quasi-experimental studies [n=54-423]). In-hospital mortality ranged from 2.1% to 4.8% in the intervention groups versus 3.3% to 5.1% in the control groups in 5 RCTs (n=55 942). Five RCTs (n=64 313) reported 3.0% to 31.0% higher rates of reperfusion for patients with ST-segment-elevation myocardial infarction in the intervention groups. The effect sizes for in-hospital and discharge medical therapies in a majority of RCTs were 3.0% to 10.0% higher in the intervention groups. There was no significant difference in 30-day mortality evaluated by 4 RCTs (n=42 384), which reported 2.5% to 15.0% versus 5.9% to 22% 30-day mortality rates in the intervention versus control groups. In contrast, nonrandomized quasi-experimental studies reported larger effect sizes compared to RCTs. There were no significant consistent differences in outcomes between high-income and middle-income countries. Low-income countries were not represented in any of the included studies.
CONCLUSIONS
Hospital-based acute coronary syndrome quality improvement interventions have a modest effect on process of care measures but not on clinical outcomes with expected differences by study design. Although quality improvement programs have an ongoing and important role for acute coronary syndrome quality of care in high-income country settings, further research will help to identify key components for contextualizing and implementing such interventions to new settings to achieve their desired effects. Systematic Review Registration: URL: https://www.crd.york.ac.uk/PROSPERO/. Unique identifier: CRD42016047604.
Topics: Acute Coronary Syndrome; Cardiology Service, Hospital; Developing Countries; Evidence-Based Medicine; Health Care Costs; Humans; Income; Outcome and Process Assessment, Health Care; Quality Improvement; Quality Indicators, Health Care; Time Factors; Treatment Outcome
PubMed: 31525081
DOI: 10.1161/CIRCOUTCOMES.118.005513 -
Therapeutic Advances in Cardiovascular... 2023Currently, no pharmacological or device-based intervention has been fully proven to reverse the no-reflow phenomenon.
BACKGROUND
Currently, no pharmacological or device-based intervention has been fully proven to reverse the no-reflow phenomenon.
OBJECTIVES
To assess the efficacy and safety of intracoronary (IC) epinephrine in the management of no-reflow phenomenon following percutaneous coronary intervention (PCI), either as first-line treatment or after the failure of conventional agents.
DESIGN
Systematic review.
DATA SOURCES AND METHODS
PubMed and Scopus databases were systematically searched up to 28 May 2022, with additional manual search on the Google Scholar and review of the reference lists of the relevant studies to identify all published studies. Cohort studies, case series, and interventional studies written in English which evaluated the efficacy and safety of IC epinephrine in patients with no-flow phenomenon were included in our review.
RESULTS
Six of the 646 articles identified in the initial search met our inclusion criteria. IC epinephrine was used either as a first-line treatment [two randomized clinical trials (RCTs)] or after the failure of conventional agents (two cohort studies and two case series) for restoring the coronary flow, mainly after primary PCI. As first-line therapy, IC epinephrine successfully restored coronary flow in over 90% of patients in both RCTs, which significantly outperformed IC adenosine (78%) but lagged behind combination of verapamil and tirofiban (100%) in this regard. In the refractory no-flow phenomenon, successful reperfusion [thrombolysis in myocardial infarction (TIMI) flow grade = 3] was achieved in three out of four patients after the administration of IC epinephrine based on the results from both case series. Their findings were confirmed by a recent cohort study that further compared IC epinephrine with IC adenosine and found significant differences between them in terms of efficacy [% TIMI flow grade 3: (69.1% 52.7%, respectively; value = 0.04)] and 1-year major adverse cardiac event (MACE) outcomes (11.3% 26.7%, respectively; value ⩽ 0.01). Overall, malignant ventricular arrhythmias were reported in none of the patients treated with IC epinephrine.
CONCLUSION
Results from available evidence suggest that IC epinephrine might be an effective and safe agent in managing the no-reflow phenomenon.
Topics: Humans; Adenosine; Epinephrine; Heart; No-Reflow Phenomenon; Percutaneous Coronary Intervention
PubMed: 36852839
DOI: 10.1177/17539447231154654 -
Journal of Cardiovascular Translational... Jun 2021We conducted a meta-analysis of preclinical studies that tested left ventricular assist device (LVAD) therapy for reducing myocardial infarct size in experimental acute... (Meta-Analysis)
Meta-Analysis
We conducted a meta-analysis of preclinical studies that tested left ventricular assist device (LVAD) therapy for reducing myocardial infarct size in experimental acute myocardial infarction (AMI). Twenty-six articles were included with a total of 488 experimental animal subjects. The meta-analysis showed that infarct size was significantly decreased by LVAD support compared to control animals (SDM, - 2.19; 95% CI, - 2.70 to - 1.69; P < 0.001). The meta-regression analysis demonstrated a high degree of heterogeneity associated with time from coronary artery occlusion to LVAD support, which correlated positively with infarct size. Subgroup analysis suggested smaller infarct size in LVAD therapies that withdrew blood from left heart than those from right heart. The proportion of left ventricular support relative to total cardiac output was positively correlated with infarct size reduction in Impella studies. Thus, early initiation of LVAD after ischemia and effective left ventricular venting may be important factors to reduce infarct size in AMI.
Topics: Animals; Disease Models, Animal; Heart-Assist Devices; Myocardial Infarction; Myocardium; Prosthesis Design; Prosthesis Implantation; Ventricular Function, Left
PubMed: 32860130
DOI: 10.1007/s12265-020-10068-7 -
European Heart Journal. Quality of Care... Jan 2021The COVID-19 pandemic has disrupted healthcare services around the world, which may have serious implications for the prognosis of patients with acute cardiovascular...
The COVID-19 pandemic has disrupted healthcare services around the world, which may have serious implications for the prognosis of patients with acute cardiovascular disease. We conducted a systematic review to assess the extent to which health services related to the care and management of acute cardiovascular events have been impacted during the COVID-19 pandemic. PubMed, MedRxiv, and Google Scholar were searched for observational studies published up to 12 August 2020 for studies that assessed the impact of the pandemic on the care and management of people with acute cardiovascular disease (CVD). In total, 27 articles were included. Of these, 16 examined the impact on acute coronary syndromes (ACS), eight on strokes, one on ACS and strokes, and two on other types of CVD. When comparing the COVID-19 period to non-COVID-19 periods, 11 studies observed a decrease in ACS admissions ranging between 40% and 50% and 5 studies showed a decrease in stroke admissions of between 12% and 40%. Four studies showed a larger reduction in non-ST-segment elevation myocardial infarctions compared to ST-segment elevation myocardial infarctions. A decrease in the number of reperfusion procedures, a shortening in the lengths of stay at the hospital, and longer symptom-to-door times were also observed. The COVID-19 pandemic has led to a substantial decrease in the rate of admissions for acute CVD, reductions in the number of procedures, shortened lengths of stay at the hospital, and longer delays between the onset of the symptoms and hospital treatment. The impact on patient's prognosis needs to be quantified in future studies.
Topics: COVID-19; Cardiovascular Diseases; Delayed Diagnosis; Hospitalization; Humans; Length of Stay; Pandemics; Patient Acceptance of Health Care; Prognosis; SARS-CoV-2; Time-to-Treatment
PubMed: 33151274
DOI: 10.1093/ehjqcco/qcaa084 -
Advanced Drug Delivery Reviews 2020Myocardial infarction (MI) is one of the leading causes of mortality worldwide. It is caused by an acute imbalance between oxygen supply and demand in the myocardium,...
Myocardial infarction (MI) is one of the leading causes of mortality worldwide. It is caused by an acute imbalance between oxygen supply and demand in the myocardium, usually caused by an obstruction in the coronary arteries. The conventional therapy is based on the application of (a combination of) anti-thrombotics, reperfusion strategies to open the occluded artery, stents and bypass surgery. However, numerous patients cannot fully recover after these interventions. In this context, new therapeutic methods are explored. Three decades ago, the first biologicals were tested to improve cardiac regeneration. Angiogenic proteins gained popularity as potential therapeutics. This is not straightforward as proteins are delicate molecules that in order to have a reasonably long time of activity need to be stabilized and released in a controlled fashion requiring advanced delivery systems. To ensure long-term expression, DNA vectors-encoding for therapeutic proteins have been developed. Here, the nuclear membrane proved to be a formidable barrier for efficient expression. Moreover, the development of delivery systems that can ensure entry in the target cell, and also correct intracellular trafficking towards the nucleus are essential. The recent introduction of mRNA as a therapeutic entity has provided an attractive intermediate: prolonged but transient expression from a cytoplasmic site of action. However, protection of the sensitive mRNA and correct delivery within the cell remains a challenge. This review focuses on the application of synthetic delivery systems that target the myocardium to stimulate cardiac repair using proteins, DNA or RNA.
Topics: Biological Products; DNA; Drug Delivery Systems; Genetic Therapy; Humans; Myocardial Infarction; Myocardial Ischemia; Myocardium; Nanoparticles; Proteins; RNA, Messenger; Regeneration; Tissue Scaffolds
PubMed: 33039498
DOI: 10.1016/j.addr.2020.10.003 -
Nutrients Jul 2020Percutaneous coronary intervention (PCI) is the preferred treatment for acute coronary syndrome (ACS) secondary to atherosclerotic coronary artery disease. This...
Percutaneous coronary intervention (PCI) is the preferred treatment for acute coronary syndrome (ACS) secondary to atherosclerotic coronary artery disease. This nonsurgical procedure is also used for selective patients with stable angina. Although the procedure is essential for restoring blood flow, reperfusion can increase oxidative stress as a side effect. We address whether intravenous infusion of vitamin C (VC) prior to PCI provides a benefit for cardioprotection. A total of eight randomized controlled trials (RCT) reported in the literature were selected from 371 publications through systematic literature searches in six electronic databases. The data of VC effect on cardiac injury biomarkers and cardiac function were extracted from these trials adding up to a total of 1185 patients. VC administration reduced cardiac injury as measured by troponin and CK-MB elevations, along with increased antioxidant reservoir, reduced reactive oxygen species (ROS) and decreased inflammatory markers. Improvement of the left ventricular ejection fraction (LVEF) and telediastolic left ventricular volume (TLVV) showed a trend but inconclusive association with VC. Intravenous infusion of VC before PCI may serve as an effective method for cardioprotection against reperfusion injury.
Topics: Acute Coronary Syndrome; Antioxidants; Ascorbic Acid; Biomarkers; Coronary Artery Disease; Creatine Kinase, MB Form; Databases, Factual; Heart; Humans; Percutaneous Coronary Intervention; Randomized Controlled Trials as Topic; Reactive Oxygen Species; Stroke Volume; Troponin; Ventricular Function, Left
PubMed: 32718091
DOI: 10.3390/nu12082199