| Study | Reason for exclusion |
|---|---|
| Abraham 2012 | Ineligible cohort – end‐stage chronic heart failure not acute cardiogenic shock. |
| Abraham 2014 | Ineligible cohort – end‐stage chronic heart failure. |
| Agarwal 2015 | Registry data – not an RCT. |
| Agrawal 2016 | Review article – with no new RCT data for the relevant cohort. |
| Almond 2017 | Ineligible cohort. |
| Alushi 2019 | Cohort study – no RCT data. |
| Anderson 2006 | Meeting abstract – registry data. |
| Basir 2019 | Cohort study – no RCT data. |
| Birks 2009 | Ineligible cohort. |
| Birks 2018 | Prospective cohort study – end‐stage heart failure. |
| Bluhm 2010 | Prospective non‐randomised trial. |
| Bol 2019 | Ineligible cohort. |
| Bronicki 2013 | Ineligible cohort chronic heart failure. |
| Brunner 2019 | Letter with no reference to any additional RCT data. |
| Kar 2012 | Review article – no additional RCT data. |
| Liu 2012 | Non‐randomised trial. |
| Morici 2018 | Cohort study – no RCT data. |
| NCT03101787 | Registered clinical trial – ineligible treatment in an ineligible cohort. |
| NCT03431467 | Registered clinical trial – ineligible control group. |
| Patel 2011 | Ineligible cohort – high‐risk PCI not cardiogenic shock. |
| Saeed 2013 | Ineligible cohort – chronic heart failure. |
| Vallabhajosyula 2017 | Review article – with no new RCT data for the relevant cohort. |
PCI: percutaneous coronary intervention; RCT: randomised controlled trial.