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BACKGROUND: Several implant-based remote monitoring strategies are currently tested to optimize heart failure (HF) management by anticipating clinical decompensation and preventing hospitalization. Among these solutions, the modern implantable cardioverter-defibrillator and cardiac resynchronization therapy devices have been equipped with sensors allowing continuous monitoring of multiple preclinical markers of worsening HF, including factors of autonomic adaptation, patient activity, and intrathoracic impedance. OBJECTIVES: We aimed to assess whether implant-based multiparameter remote monitoring strategy for guided HF management improves clinical outcomes when compared to standard clinical care. METHODS: A systematic literature research for randomized controlled trials (RCTs) comparing multiparameter-guided HF management versus standard of care was performed on PubMed, Embase, and CENTRAL databases. Incidence rate ratios (IRRs) and associated 95% confidence intervals (CIs) were calculated using the Poisson regression model with random study effects. The primary outcome was a composite of all-cause death and HF hospitalization events, whereas secondary endpoints included the individual components of the primary outcome. RESULTS: Our meta-analysis included 6 RCTs, amounting to a total of 4869 patients with an average follow-up time of 18 months. Compared with standard clinical management, the multiparameter-guided strategy reduced the risk of the primary composite outcome (IRR 0.83, 95%CI 0.71-0.99), driven by statistically significant effect on both HF hospitalization events (IRR 0.75, 95%CI 0.61-0.93) and all-cause death (IRR 0.80, 95%CI 0.66-0.96). CONCLUSION: Implant-based multiparameter remote monitoring strategy for guided HF management is associated with significant benefit on clinical outcomes compared to standard clinical care, providing a benefit on both hospitalization events and all-cause death.
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Insuficiencia Cardíaca , Humanos , Insuficiencia Cardíaca/terapia , Insuficiencia Cardíaca/tratamiento farmacológico , Dispositivos de Terapia de Resincronización CardíacaRESUMEN
Myocardial bridging (MB) is the most frequent congenital coronary anomaly characterized by a segment of an epicardial coronary artery that passes through the myocardium. MB is an important cause of myocardial ischemia and is also emerging as a possible cause of myocardial infarction with non-obstructed coronary arteries (MINOCA). There are multiple mechanisms underlying MINOCA in patients with MB (i.e., MB-mediated increased risk of epicardial or microvascular coronary spasm, atherosclerotic plaque disruption and spontaneous coronary artery dissection). The identification of the exact pathogenetic mechanism is crucial in order to establish a patient-tailored therapy. This review provides the most up-to-date evidence regarding the pathophysiology of MINOCA in patients with MB. Moreover, it focuses on the available diagnostic tools that could be implemented at the time of coronary angiography to achieve a pathophysiologic diagnosis. Finally, it focuses on the therapeutic implications associated with the different pathogenetic mechanisms of MINOCA in patients with MB.
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BACKGROUND: There is uncertainty about which diagnostic strategy for detecting coronary artery disease (CAD) provides better outcomes. PURPOSE: To compare the effect on clinical management and subsequent health effects of alternative diagnostic strategies for the initial assessment of suspected stable CAD. DATA SOURCES: PubMed, Embase, and Cochrane Central Register of Controlled Trials. STUDY SELECTION: Randomized clinical trials comparing diagnostic strategies for CAD detection among patients with symptoms suggestive of stable CAD. DATA EXTRACTION: Three investigators independently extracted study data. DATA SYNTHESIS: The strongest available evidence was for 3 of the 6 comparisons: coronary computed tomography angiography (CCTA) versus invasive coronary angiography (ICA) (4 trials), CCTA versus exercise electrocardiography (ECG) (2 trials), and CCTA versus stress single-photon emission computed tomography myocardial perfusion imaging (SPECT-MPI) (5 trials). Compared with direct ICA referral, CCTA was associated with no difference in cardiovascular death and myocardial infarction (relative risk [RR], 0.84 [95% CI, 0.52 to 1.35]; low certainty) but less index ICA (RR, 0.23 [CI, 0.22 to 0.25]; high certainty) and index revascularization (RR, 0.71 [CI, 0.63 to 0.80]; moderate certainty). Moreover, CCTA was associated with a reduction in cardiovascular death and myocardial infarction compared with exercise ECG (RR, 0.66 [CI, 0.44 to 0.99]; moderate certainty) and SPECT-MPI (RR, 0.64 [CI, 0.45 to 0.90]; high certainty). However, CCTA was associated with more index revascularization (RR, 1.78 [CI, 1.33 to 2.38]; moderate certainty) but less downstream testing (RR, 0.56 [CI, 0.45 to 0.71]; very low certainty) than exercise ECG. Low-certainty evidence compared SPECT-MPI versus exercise ECG (2 trials), SPECT-MPI versus stress cardiovascular magnetic resonance imaging (1 trial), and stress echocardiography versus exercise ECG (1 trial). LIMITATION: Most comparisons primarily rely on a single study, many studies were underpowered to detect potential differences in direct health outcomes, and individual patient data were lacking. CONCLUSION: For the initial assessment of patients with suspected stable CAD, CCTA was associated with similar health effects to direct ICA referral, and with a health benefit compared with exercise ECG and SPECT-MPI. Further research is needed to better assess the relative performance of each diagnostic strategy. PRIMARY FUNDING SOURCE: None. (PROSPERO: CRD42022329635).
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Enfermedad de la Arteria Coronaria , Infarto del Miocardio , Imagen de Perfusión Miocárdica , Humanos , Enfermedad de la Arteria Coronaria/diagnóstico por imagen , Enfermedad de la Arteria Coronaria/complicaciones , Angiografía Coronaria , Infarto del Miocardio/complicaciones , Angiografía por Tomografía Computarizada/métodos , Tomografía Computarizada por Rayos X , Imagen de Perfusión Miocárdica/métodosRESUMEN
AIMS: Coronary artery disease (CAD) is a common cause of heart failure (HF). Whether coronary revascularization improves outcomes in patients with HF receiving guideline-recommended pharmacological therapy (GRPT) remains uncertain; therefore, we conducted a systematic review and meta-analysis of relevant randomized controlled trials (RCTs). METHODS AND RESULTS: We searched in public databases for RCTs published between 1 January 2001 and 22 November 2022, investigating the effects of coronary revascularization on morbidity and mortality in patients with chronic HF due to CAD. All-cause mortality was the primary outcome. We included five RCTs that enrolled, altogether, 2842 patients (most aged <65 years; 85% men; 67% with left ventricular ejection fraction ≤35%). Overall, compared to medical therapy alone, coronary revascularization was associated with a lower risk of all-cause mortality (hazard ratio [HR] 0.88, 95% confidence interval [CI] 0.79-0.99; p = 0.0278) and cardiovascular mortality (HR 0.80, 95% CI 0.70-0.93; p = 0.0024) but not the composite of hospitalization for HF or all-cause mortality (HR 0.87, 95% CI 0.74-1.01; p = 0.0728). There were insufficient data to show whether the effects of coronary artery bypass graft surgery or percutaneous coronary intervention were similar or differed. CONCLUSIONS: For patients with chronic HF and CAD enrolled in RCTs, the effect of coronary revascularization on all-cause mortality was statistically significant but neither substantial (HR 0.88) nor robust (upper 95% CI close to 1.0). RCTs were not blinded, which may bias reporting of the cause-specific reasons for hospitalization and mortality. Further trials are required to determine which patients with HF and CAD obtain a substantial benefit from coronary revascularization by either coronary artery bypass graft surgery or percutaneous coronary intervention.
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Enfermedad de la Arteria Coronaria , Insuficiencia Cardíaca , Intervención Coronaria Percutánea , Masculino , Humanos , Femenino , Enfermedad de la Arteria Coronaria/complicaciones , Enfermedad de la Arteria Coronaria/cirugía , Insuficiencia Cardíaca/tratamiento farmacológico , Ensayos Clínicos Controlados Aleatorios como Asunto , Puente de Arteria Coronaria/efectos adversos , Volumen Sistólico , Intervención Coronaria Percutánea/efectos adversos , Resultado del TratamientoRESUMEN
AIMS: Adenosine has been tested in several randomized controlled trials (RCTs) to minimize the incidence of coronary microvascular obstruction (CMVO). The aim of this study was to pool all the RCTs comparing intracoronary or intravenous adenosine versus placebo in patients with acute coronary syndrome (ACS) undergoing myocardial revascularization. METHODS AND RESULTS: PubMed and Scopus electronic databases were scanned for eligible studies up to 5th June 2022. A total of 26 RCTs with 5843 patients were included. Efficacy endpoints were major adverse cardiac events (MACE), all-cause death, non-fatal myocardial infarction, and heart failure. Atrioventricular blocks and ventricular fibrillation/sustained ventricular tachycardia (VF/SVT) were the safety endpoints. Myocardial blush grade, thrombolysis in myocardial infarction (TIMI) flow grade, left ventricular ejection fraction (LVEF), infarct size, and ST-segment resolution were also assessed. Adenosine administration was not associated with any clinical benefit in terms of MACE, all-cause death, non-fatal myocardial infarction, and heart failure. However, adenosine was associated with an increased rate of advanced atrioventricular blocks and of VF/SVT in studies with total mean ischaemic time >3 h, compared to placebo. Remarkably, among patients undergoing percutaneous coronary intervention, adenosine was associated with reduced myocardial blush grade 0-1 and TIMI flow grade 0-2, compared to placebo. Furthermore, adenosine did not show favourable effects on LVEF and infarct size. CONCLUSION: Adenosine infusion, as adjunctive therapy in ACS, was associated with an increased risk of advanced atrioventricular blocks and increased rates of adenosine-triggered ventricular arrhythmias in patients with long ischaemic time, without providing any clinical benefit compared to placebo.
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Síndrome Coronario Agudo , Bloqueo Atrioventricular , Insuficiencia Cardíaca , Infarto del Miocardio , Humanos , Síndrome Coronario Agudo/diagnóstico , Síndrome Coronario Agudo/tratamiento farmacológico , Adenosina/efectos adversos , Bloqueo Atrioventricular/inducido químicamente , Bloqueo Atrioventricular/tratamiento farmacológico , Insuficiencia Cardíaca/tratamiento farmacológico , Infarto del Miocardio/tratamiento farmacológico , Ensayos Clínicos Controlados Aleatorios como Asunto , Vasodilatadores/efectos adversosRESUMEN
BACKGROUND AND AIMS: The use of venoarterial extracorporeal membrane oxygenation (VA-ECMO) for the treatment of cardiogenic shock (CS) may result in left ventricle overload and distension. Percutaneous microaxial flow pump Impella in addition to VA-ECMO (ECPELLA) is an emerging option to overcome these collateral effects. Aim of this study is to assess whether the addition of Impella to VA-ECMO is an effective and safe unloading strategy. METHODS AND RESULTS: We performed a systematic literature review of studies comparing ECPELLA vs. ECMO alone in patients with CS. The primary endpoint was early mortality (in-hospital or 30-day mortality). The secondary endpoints were bleeding, need for kidney replacement therapy, haemolysis, infections, and limb ischaemia. A total of 3469 potentially relevant articles were screened and eight retrospective studies including 11.137 patients were selected. There was no significant difference in early mortality (Risk Ratio, RR 0.90, 95% CI 0.78-1.03) between ECPELLA and ECMO. Nevertheless, there was a borderline significant reduction in early mortality with ECPELLA (RR 0.74, 95% CI 0.55-1.00) at sensitivity analysis selectively including studies reporting propensity matched analysis. ECPELLA was associated with increased bleeding (RR 1.45, 95% CI 1.20-1.75), need for kidney replacement therapy (RR 1.54, 95% CI 1.19-1.99), haemolysis (RR 1.71, 95% CI 1.41-2.07) and limb ischaemia (RR 1.43, 95% CI 1.17-1.75) and with a non-significant increase in severe infections (RR 1.26, 95% CI 0.84-1.89), compared with ECMO alone. CONCLUSION: Among patients with cardiogenic shock, ECPELLA is associated with increased complications compared with ECMO. Whether reducing ventricular overload with Impella among patients treated with ECMO reduces early mortality needs to be confirmed by further investigations.
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Oxigenación por Membrana Extracorpórea , Corazón Auxiliar , Humanos , Choque Cardiogénico/terapia , Estudios Retrospectivos , Oxigenación por Membrana Extracorpórea/efectos adversos , Oxigenación por Membrana Extracorpórea/métodos , Ventrículos Cardíacos , HemólisisRESUMEN
The incidence and clinical presentation of ischemic heart disease (IHD), as well as thrombotic and bleeding risks, appear to differ between genders. Compared with men, women feature an increased thrombotic risk, probably related to an increased platelet reactivity, higher level of coagulation factors, and sex-associated unique cardiovascular risk factors, such as pregnancy-related (i.e., pre-eclampsia and gestational diabetes), gynecological disorders (i.e., polycystic ovary syndrome, early menopause) and autoimmune or systemic inflammatory diseases. At the same time, women are also at increased risk of bleeding, due to inappropriate dosing of antithrombotic agents, smaller blood vessels, lower body weight and comorbidities, such as diabetes and chronic kidney disease. Pharmacological strategies focused on the personalization of antithrombotic treatment may, therefore, be particularly appealing in women in light of their higher bleeding and ischemic risks. Paradoxically, although women represent a large proportion of cardiovascular patients in our practice, adequate high-quality clinical trial data on women remain scarce and inadequate to guide decision-making processes. As a result, IHD in women tends to be understudied, underdiagnosed and undertreated, a phenomenon known as a "Yentl syndrome." It is, therefore, compelling for the scientific community to embark on dedicated clinical trials to address underrepresentation of women and to acquire evidence-based knowledge in the personalization of antithrombotic therapy in women.
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Myocardial bridging (MB) is the most frequent congenital coronary anomaly in which a segment of an epicardial coronary artery takes a tunneled course under a bridge of the myocardium. This segment is compressed during systole, resulting in the so-called "milking effect" at coronary angiography. As coronary blood flow occurs primarily during diastole, the clinical relevance of MB is heterogeneous, being usually considered an asymptomatic bystander. However, many studies have suggested its association with myocardial ischemia, anginal symptoms, and adverse cardiac events. The advent of contemporary non-invasive and invasive imaging modalities and the standardization of intracoronary functional assessment tools have remarkably improved our understanding of MB-related ischemia, suggesting the role of atherosclerotic lesions proximal to MB, vasomotor disorders and microvascular dysfunction as possible pathophysiological substrates. The aim of this review is to provide a contemporary overview of the pathophysiology and of the non-invasive and invasive assessment of MB, in the attempt to implement a case-by-case therapeutic approach according to the specific endotype of MB-related ischemia.
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AIMS: Pre-clinical congestion markers of worsening heart failure (HF) can be monitored by devices and may support the management of patients with HF. We aimed to assess whether congestion-guided HF management according to device-based remote monitoring strategies is more effective than standard therapy. METHODS AND RESULTS: A comprehensive literature research for randomized controlled trials (RCTs) comparing device-based remote monitoring strategies for congestion-guided HF management versus standard therapy was performed on PubMed, Embase, and CENTRAL databases. Incidence rate ratios (IRRs) and associated 95% confidence intervals (CIs) were calculated using the Poisson regression model with random study effects. The primary outcome was a composite of all-cause death and HF hospitalizations. Secondary endpoints included the individual components of the primary outcome. A total of 4347 patients from eight RCTs were included. Findings varied according to the type of parameters monitored. Compared with standard therapy, haemodynamic-guided strategy (4 trials, 2224 patients, 12-month follow-up) reduced the risk of the primary composite outcome (IRR 0.79, 95% CI 0.70-0.89) and HF hospitalizations (IRR 0.76, 95% CI 0.67-0.86), without a significant impact on all-cause death (IRR 0.93, 95% CI 0.72-1.21). In contrast, impedance-guided strategy (4 trials, 2123 patients, 19-month follow-up) did not provide significant benefits. CONCLUSION: Haemodynamic-guided HF management is associated with better clinical outcomes as compared to standard clinical care.
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Insuficiencia Cardíaca , Humanos , Insuficiencia Cardíaca/tratamiento farmacológico , Hospitalización , BiomarcadoresRESUMEN
Background: Takotsubo syndrome (TTS) is an emerging disease characterized by an acute and reversible myocardial dysfunction which may have an influence on clinical status and prognosis. Despite extensive research, its pathophysiology has not been completely elucidated; among other hypothesis, a heart-brain interaction has been proposed. Methods: The aim of this study was to assess the impact of psychiatric disorders and of some personality types on the pathogenesis of TTS. We conducted a retrospective observational case-control study. We enrolled a total of 50 patients, 25 with a previous diagnosis of TTS and 25 patients with a history of acute coronary syndrome (ACS), that underwent a comprehensive lifetime psychiatric assessment. Results: We found no significant difference between TTS and ACS patients in cardiovascular risk profile. The frequency of lifetime psychiatric disorders was significantly greater in TTS. In particular, in the univariate analysis, TTS group showed a higher prevalence of mood disorders (Major Depressive Disorder, Bipolar Disorder, Dysthymia; 16 vs. 2, P < 0.001) and anxiety disorder (Generalized Anxiety Disorder, Panic Disorder, Agoraphobia; 20 vs. 8, P = 0.001) compared with ACS group. There was also a significant tendency in TTS patients to psychotropic medication use, substance abuse, and psychologist or psychiatrist consulting. However, there was no difference between the groups in previous stressful events and Type D personality. Moreover, the multivariate analysis showed that mood disorders were independently associated with TTS (OR 16.9, 95% CI, 2.2-127). Conclusion: Our study demonstrated that pre-existing anxiety disorders and mostly mood disorders were significantly higher in TTS patients than in ACS group, suggesting the role of psychiatric disorders as possible pathophysiological substrate of TTS.
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Background: Despite continuous advancement in the field, heart failure (HF) remains the leading cause of hospitalization among the elderly and the overall first cause of hospital readmission in developed countries. Implantable hemodynamic monitoring is being tested to anticipate the clinical exacerbation onset, potentially preventing an emergent acute decompensation. To date, only pulmonary artery pressure (PAP) sensor received the approval to be implanted in symptomatic heart failure patients with reduced ejection fraction. However, PAP's indirect estimation of left ventricular filling pressure can be inaccurate in some contexts. Methods: The VECTOR-HF study (NCT03775161) is examining the safety, usability and performance of the V-LAP system, a latest-generation device capable of continuously monitoring left atrial pressure (LAP). In our center, five advanced HF patients have been enrolled. After confirmation of the transmitted data reliability, LAP trends and waveforms have guided therapy optimization. The aim of this work is to share clinical insights from our center preliminary experience with V-LAP application. Results: Over a median follow-up time of 18 months, LAP-based therapy optimization managed to reduce intracardiac pressure over time and no hospital readmission occurred. This result was paralleled by an improvement in both functional capacity (6MWT distance 352.5 ± 86.2 meters at baseline to 441.2 ± 125.2 meters at last follow-up) and quality of life indicators (KCCQ overall score 63.82 ± 16.36 vs. 81.92 ± 9.63; clinical score 68.47 ± 19.48 vs. 83.70 ± 15.58). Conclusion: Preliminary evidence from V-LAP application at our institution support a promising efficacy. However, further study is needed to confirm the technical reliability of the device and to exploit the clinical benefit of left-sided hemodynamic remote monitoring.
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AIMS: The aims of this study is to assess by an updated meta-analysis the clinical outcomes related to permanent pacemaker implantation (PPI) after transcatheter aortic valve implantation (TAVI) at long-term (≥12 months) follow-up (LTF). METHODS AND RESULTS: A comprehensive literature research was performed on PubMed and EMBASE. The primary endpoint was all-cause death. Secondary endpoints were rehospitalization for heart failure, stroke, and myocardial infarction. A subgroup analysis was performed according to the Society of Thoracic Surgeon-Predicted Risk of Mortality (STS-PROM) score. This study is registered with PROSPERO (CRD42021243301). A total of 51 069 patients undergoing TAVI from 31 observational studies were included. The mean duration of follow-up was 22 months. At LTF, PPI post-TAVI was associated with a higher risk of all-cause death [risk ratio (RR) 1.18, 95% confidence interval (CI) 1.10-1.25; P < 0.001] and rehospitalization for heart failure (RR 1.32, 95% CI 1.13-1.52; P < 0.001). In contrast, the risks of stroke and myocardial infarction were not affected. Among the 20 studies that reported procedural risk, the association between PPI and all-cause death risk at LTF was statistically significant only in studies enrolling patients with high STS-PROM score (RR 1.25, 95% CI 1.12-1.40), although there was a similar tendency of the results in those at medium and low risk. CONCLUSION: Patients necessitating PPI after TAVI have a higher long-term risk of all-cause death and rehospitalization for heart failure as compared to those who do not receive PPI.
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Estenosis de la Válvula Aórtica , Insuficiencia Cardíaca , Prótesis Valvulares Cardíacas , Infarto del Miocardio , Marcapaso Artificial , Accidente Cerebrovascular , Reemplazo de la Válvula Aórtica Transcatéter , Válvula Aórtica/cirugía , Estenosis de la Válvula Aórtica/cirugía , Insuficiencia Cardíaca/diagnóstico , Insuficiencia Cardíaca/etiología , Insuficiencia Cardíaca/terapia , Humanos , Factores de Riesgo , Accidente Cerebrovascular/etiología , Reemplazo de la Válvula Aórtica Transcatéter/efectos adversos , Resultado del TratamientoRESUMEN
Platypnoea-orthodeoxia syndrome (POS) is an uncommon but challenging clinical condition characterised by positional dyspnoea (platypnoea) and arterial desaturation (orthodeoxia) in the upright position that improve in the supine position. Since its first description, many cases have been reported and many conditions have been associated with this syndrome. Herein, we review the clinical presentation, pathophysiology, diagnostic work-up and management of patients with POS, aiming to increase the awareness of this often misdiagnosed condition.
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Foramen Oval Permeable , Disnea/complicaciones , Disnea/etiología , Foramen Oval Permeable/diagnóstico , Foramen Oval Permeable/diagnóstico por imagen , Humanos , Hipoxia/complicaciones , Hipoxia/etiología , Postura , SíndromeRESUMEN
Background and aims: Edoxaban proved to be safe and effective also in fragile patients, but its administration through percutaneous endoscopic gastrostomy (PEG) has not been previously investigated. The purpose of this study was to evaluate the feasibility and the preliminary safety and efficacy profiles of edoxaban administered via PEG in patients with an indication for long-term oral anticoagulation. Methods: ORIGAMI was a prospective, single-arm, observational study (NCT04271293). Patients with PEG and an indication for long-term anticoagulation were prospectively enrolled. Crushed edoxaban at approved doses was administered via PEG. The primary endpoint was the composite of cardio-embolic events consisting of ischemic stroke, systemic embolism, or symptomatic deep venous thrombosis/pulmonary embolism (DVT/PE). Secondary endpoints were the number of bleeding events and edoxaban plasma concentrations at steady state. We here report the 12-month results. Results: A total of 12 patients were enrolled. The main indication for PEG implantation was amyotrophic lateral sclerosis (10/12). The primary endpoint of cardio-embolic events did not occur in any patients at 12 months. All patients were in the therapeutic range of steady-state edoxaban plasma levels. Three minor bleedings were observed, while no major bleedings occurred during the observational period. A total of five patients died. All deaths were from non-cardiovascular causes and were consistent with the natural history of the pre-existing severe disease. Conclusion: Our study suggests that edoxaban administration via PEG is feasible and appears safe and effective in fragile, comorbid patients, resulting in therapeutic plasma concentrations of edoxaban. Clinical trial registration: [ClinicalTrials.gov], identifier [NCT04271293].
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Inflammation is the main pathophysiological process involved in atherosclerotic plaque formation, progression, instability, and healing during the evolution of coronary artery disease (CAD). The use of colchicine, a drug used for decades in non-ischemic cardiovascular (CV) diseases and/or systemic inflammatory conditions, stimulated new perspectives on its potential application in patients with CAD. Previous mechanistic and preclinical studies revealed anti-inflammatory and immunomodulatory effects of colchicine exerted through its principal mechanism of microtubule polymerization inhibition, however, other pleiotropic effects beneficial to the CV system were observed such as inhibition of platelet aggregation and suppression of endothelial proliferation. In randomized double-blinded clinical trials informing our clinical practice, low doses of colchicine were associated with the significant reduction of cardiovascular events in patients with stable CAD and chronic coronary syndrome (CCS) while in patients with a recent acute coronary syndrome (ACS), early initiation of colchicine treatment significantly reduced major adverse CV events (MACE). On the other hand, the safety profile of colchicine and its potential causal relationship to the observed increase in non-CV deaths warrants further investigation. For these reasons, postulates of precision medicine and patient-tailored approach with regards to benefits and harms of colchicine treatment should be employed at all times due to potential toxicity of colchicine as well as the currently unresolved signal of harm concerning non-CV mortality. The main goal of this review is to provide a balanced, critical, and comprehensive evaluation of currently available evidence with respect to colchicine use in the setting of CAD.