| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Single period of cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Multiple periods of cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of graft of aorta with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Repair of sinus of Valsalva fistula with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Aortic valve commissurotomy with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Suture repair of great vessels with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Suture repair of aorta with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of graft of great vessels with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Repair with vein graft of intrathoracic artery with bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Direct repair of intrathoracic artery with bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiopulmonary bypass operation | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Induced cardioplegia | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Excision of intracardiac tumor with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of graft of aorta with cardiopulmonary bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Repair of sinus of Valsalva fistula with cardiopulmonary bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Single period of cardiopulmonary bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Multiple periods of cardiopulmonary bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Aortic valve commissurotomy with cardiopulmonary bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Suture repair of great vessels with cardiopulmonary bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Suture repair of aorta with cardiopulmonary bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of graft of great vessels with cardiopulmonary bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Repair with vein graft of intrathoracic artery with bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Direct repair of intrathoracic artery with bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiopulmonary bypass operation | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Induced cardioplegia | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Excision of intracardiac tumor with cardiopulmonary bypass | Direct device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier |  | 
| Single period of cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple periods of cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of graft of aorta with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Repair of sinus of Valsalva fistula with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 2 | 
| Aortic valve commissurotomy with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Suture repair of great vessels with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 2 | 
| Suture repair of aorta with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of graft of great vessels with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 2 | 
| Repair with vein graft of intrathoracic artery with bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Direct repair of intrathoracic artery with bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Cardiopulmonary bypass operation | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Induced cardioplegia | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of intracardiac tumor with cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of graft of aorta with cardiopulmonary bypass | Using device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 5 | 
| Insertion of graft of great vessels with cardiopulmonary bypass | Using device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 2 | 
| Insertion of graft of great vessels with cardiopulmonary bypass | Using device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 2 | 
| Unifocalization of pulmonary artery with cardiopulmonary bypass | Using device | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 3 | 
| Modified ultrafiltration adjunct cardiopulmonary bypass | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 | 
| Induced circulatory arrest | Using | False | Heart-lung machine, device | Inferred relationship | Existential restriction modifier | 1 |