| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Peak systolic, function | Is a | True | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Atrial systole, function | Is a | True | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Electromechanical systole, function | Is a | True | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Ventricular systole, function | Is a | True | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Soft systolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Aortic ejection murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary ejection murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Systolic flow murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Mitral late systolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Mitral pansystolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Tricuspid inspiratory pansystolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Left parasternal pansystolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Mid-systolic click | Interprets | True | Systole, function | Inferred relationship | Existential restriction modifier | 3 | 
| Systolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Systolic ejection sound | Interprets | True | Systole, function | Inferred relationship | Existential restriction modifier | 1 | 
| Basal systolic thrill | Interprets | True | Systole, function | Inferred relationship | Existential restriction modifier | 2 | 
| Late systolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Mid-systolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Pansystolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Ejection murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  | 
| Early systolic murmur | Interprets | False | Systole, function | Inferred relationship | Existential restriction modifier |  |