P6211Efficacy of comprehensive Managed Care after Acute Myocardial Infarction (MC-AMI) in a long-term follow-up - preliminary experience of a single high-volume center

Introduction

Despite substantial progress in the medical and interventional treatment of acute myocardial infarction (AMI), a long-term prognosis in MI survivors remains unsatisfactory. The Managed Care in Acute Myocardial Infarction (MC-AMI, KOS-zawal) is the first program of a comprehensive, supervised care for patients with AMI to improve long-term prognosis. It includes acute intervention, complex revascularization, cardiac rehabilitation (CR), outpatient follow-up, and prevention of SCD.

Purpose

To assess the effect of MC-AMI on major adverse cardiovascular and cerebrovascular events (MACCE) in 12 months follow-up.

Methods

In this single-center, retrospective observational study we enrolled 1211 patients, out of which 719 consented for participation in MC-AMI and compared them to 1130 subjects in the control group. After propensity score matching two groups of 529 subjects each were compared. Cox regression was performed to assess the effect of MC-AMI on clinical endpoints.

Results

Primarily, MC-AMI has been proved to reduce MACCE rate by 40% in a 12-month observation. Participants of MC-AMI had a higher adherence to cardiac rehabilitation (98 vs. 14%) higher rate of scheduled revascularisation (coronary artery bypass grafting: 9.8% vs. 4.9%, p<0.001; elective percutaneous coronary intervention: 3.0% vs 2.1%, p<0.05) and ICD implantation (2.8% vs. 0.6%, p<0.05) compared to control.

Multivariable Cox regression analysis revealed MC-AMI participation to be inversely associated with the occurrence MACCE at 12 months (HR=0.500, 95%Cl 0.349–0.718, p<0.001). Besides, older age, diabetes mellitus, hyperlipidemia, prior PAD, previous UA, and lower LVEF were significantly associated with the primary endpoint.

12-month FU - freedom from MACCE

Conclusions

MC-AMI is the first program of a comprehensive in-hospital and post-discharge care for AMI patients. MC-AMI improves prognosis by increasing the rate of patients undergoing CR, complete revascularization and ICD implantation, thus reducing MACCE rate by 40% in 12 months. Participation in MC-AMI is inversely related to mortality rate, recurrent MI and heart failure related hospitalization during 12 months.

P6217Managed Care after Acute Myocardial Infarction (MC-AMI) reduces MACE by 45% in 3-month follow-up - results form Poland's National Health Fund program of post-MI care. A single center analysis

Background

Despite progress in the medical and interventional treatment of acute myocardial infarction (AMI) and low in-hospital mortality related to AMI, a post-discharge prognosis in MI survivors is still unacceptable. The Managed Care in Acute Myocardial Infarction (MC-AMI, KOS-zawal) is a program introduced by Poland's National Health Fund aiming at comprehensive care for patients with AMI to improve long-term prognosis. It includes acute intervention, complex revascularization, cardiac rehabilitation (CR), outpatient follow-up, and prevention of SCD.

Aims

To assess the effect of MC-AMI on major adverse cardiovascular events (MACE) in a 3-month follow-up.

Methods

In this single-center, retrospective observational study we enrolled 1211 patients, and compared them to 1130 subjects in the control group. After 1:1 propensity score matching two groups of 529 subjects each were compared. Cox regression was performed to assess the effect of MC-AMI and other variables on MACE.

Results

MC-AMI has been proved to reduce MACE rate by 45% in a 3-month observation. Multivariable Cox regression analysis revealed MC-AMI participation to be inversely associated with the occurrence MACE at 3 months (HR 0.476, 95% CI 0.283–0.799, p<0.005). Besides, older age, male sex (HR 2.0), history of unstable angina (HR 3.15), peripheral artery disease (HR 2.17), peri-MI atrial fibrillation (HR 1.87) and diabetes (HR 1.5), were significantly associated with the primary endpoint.

Comparison of study endpoints between KO Total, n (%) MC-AMI group, n (%) Control Group, n (%) RR 95% CI NNT P n=1058 n=529 n=529 All-cause mortality 19 (1.8%) 7 (1.3%) 12 (2.3%) 0.583 0.232–1.470 105.8 0.247 Hospitalization for HF 31 (2.9%) 12 (2.3%) 19 (3.6%) 0.632 0.310–1.288 75.6 0.202 Myocardial infarction 25 (2.4%) 9 (1.7%) 16 (3.0%) 0.563 0.251–1.262 75.6 0.157 MACE 73 (6.9%) 26 (4.9%)# 47 (8.9%) 0.553 0.348–0.879 25.2 0.012 *Two-tailed Pearson's Chi-square test; MACE, Major Adverse Cardiovascular Events. #Number of patients with at least one MACE; in 2 patients 2 endpoints occurred. This explains why the total number of MACE is lower than the sum of all endpoints.

MC-AMI vs. control - MACE in 3 months up

Conclusions

MC-AMI is the first program of a comprehensive. Participation in MC-AMI – a first comprehensive in-hospital and post-discharge care for AMI patients for AMI patients improves prognosis and reduces MACE rate by 45% as soon as in 3 months.

Pulmonary vein anatomy variants as a biomarker of atrial fibrillation - CT angiography evaluation

Background

It has been suggested that changes in pulmonary veins (PV) and left atrium (LA) anatomy may have an influence on initiating atrial fibrillation (AF) and the effectiveness of pulmonary vein isolation (PVI) in patients (pts) with atrial fibrillation.

The aim of the study was to assess anatomy abnormalities of the PV and LA in the patients with the history of AF and compare it with the control group(CG).

Methods

The multi-slice tomography (MSCT) scans were performed in 224 AF pts. before PVI (129 males, mean age 59 ± 9 yrs). The CG consisted of 40 pts. without AF (26 males, age 45 ± 9 yrs). LA and PV anatomy were evaluated. Diameters of PV ostia were measured in two directions: anterior-posterior (AP) and superior-inferior (SI) automatically using Vitrea 4.0.

Results

Pulmonary veins anatomy variants were observed more frequently in the atrial fibrillation group - 83 pts. (37%) vs 6 pts. (15%) in CG; 9% (21 pts) left common ostia (CO), 2% (5 pts) right CO, 19% (42 pts) additional right PV (APV), (1.8%) 4 pts. APV left, 8% right early branching (EB) and 3.5% left EB. The LA diameter differed significantly in AF vs CG group (41.2 ± 6 mm vs 35 ± 4.2 mm, p < 0.0001) respectively.

Conclusions

The anomalies of pulmonary vein anatomy occurred more often in pts. with AF. They can be defined as an image biomarkers of atrial fibrillation. Right additional (middle) pulmonary vein was the most important anomaly detected in AF patients as well as enlargered diameters of the LA and PV ostia.