Periodic Reporting for period 4 - EURO SHOCK (Testing the value of a novel strategic approach and its cost efficacy to improve the poor outcomes in Cardiogenic Shock)
Periodo di rendicontazione: 2022-07-01 al 2022-12-31
EURO SHOCK was conceived as the first large-scale clinical study testing extracorporeal membrane oxygenation (ECMO), a novel intervention strategy aimed at reducing the high mortality associated with CGS and alleviating the associated burden of chronic heart failure. The appropriately powered randomised clinical trial at the centre of the project was designed to assess whether the very early use of ECMO in the acute phase of CGS, supplementing primary percutaneous coronary intervention (PCI) and standard pharmaco-therapies, can stop the cycle of decline in patients and reduce cardiac mortality compared to the current standard of therapy alone. The project also planned to test if a system of urgent transfer of unwell patients to specialist ECMO centres is practical, and whether there are markers that predict worse outcomes when selecting patients for best-expedited treatments. The use of Cardiac Magnetic Imaging is an important mechanistic sub-study. EURO SHOCK further aimed to compare the cost-effectiveness of up-front ECMO to the cost of current standard care- such a cost-efficacy analysis will be central to any assessment of any benefit versus the price of any benefit (if) seen.
At the time of suspension, there were 19 active recruiting sites in 8 countries. In total 35 participants were recruited and data were collected using an electronic CRF. The governance infrastructure for the programme was in place, including the Trial Steering Committee, the Independent Data Safety Monitoring Committee and Clinical Events Committee. Robust monitoring of patient data was supported by the experienced Cardiovascular European Research Centre (CERC).
To raise awareness for EURO SHOCK, a project website (www.euroshock-study.eu) tailored to different audiences was created. Outreach and dissemination activities were supported by materials, such as a roll-up and a project factsheet. Work on a pilot cardiac MRI study in CGS and novel approaches to remote patient monitoring is ongoing.
The number of patients recruited to the trial means that no definite conclusions could be drawn from the data available regarding the efficacy of VA-ECMO in cardiogenic shock. However, the data suggest a trend to a benefit with VA-ECMO with a numerically lower rate of 30-day and 1-year mortality with VA-ECMO compared to standard therapy alone. The 30-day all-cause mortality was 43.8% in patients randomised to VA-ECMO and 61.1% in patients randomised to standard therapy (HR=0.56 95%CI=0.21-1.45 p=0.22). The 1-year all-cause mortality rate was 51.8% in the VA-ECMO group and 81.5% in the standard therapy group (HR=0.52 95% CI=0.21-1.26 P=0.14). There were also numerically lower rates of the composite endpoint of all-cause mortality and readmission with heart failure and 12-month rate for readmission with heart failure. Vascular and bleeding complications occurred more often in the patients randomised to VA-ECMO compared to standard therapy (vascular complications VA-ECMO= 21.4%, standard therapy = 0%; bleeding complications VA-ECMO=35.7%, standard therapy = 5.6%), reflective of the highly invasive nature of this mechanical circulatory support device.
The findings from the main trial were presented by Prof Manel Sabate at the EuroPCR 2023 conference as a “late breaking trial” on 19th May 2023. The results were also published simultaneously in the peer-reviewed journal “EuroIntervention” (Banning AS, Sabate M et al. EuroIntervention 2023. DOI: 10.4244/EIJ-D-23-00204). The presentation and publication of the results disseminates the findings from this trial to the wider interventional cardiology community as well as other healthcare specialists involved in the care of patients with cardiogenic shock such as intensivists and heart failure specialists.
A Scientific Symposium on the management of CGS was held in Barcelona on 2nd December with input from other groups in the field, including the ECLS SHOCK and ANCHOR trials. A descriptive report on the main findings of the projects has been provided in the relevant deliverable. The project has established a European network of investigators managing complex myocardial infarction patients, which allows for future collaboration and potential for improvements in health care.