| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Distribution of ventilation, function | Is a | False | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Passive ventilation, function | Is a | True | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Ventilatory drive, function | Is a | True | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Alveolar ventilation (V), function | Is a | True | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Active ventilation, function | Is a | True | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Ventilation-perfusion ratio, function | Is a | False | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Ventilatory defect | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 1 | 
| Alveolar hypoventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| CCHS - Congenital central hypoventilation | Interprets | False | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Hypoventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 1 | 
| Acute hypoventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Chronic hypoventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Primary alveolar hypoventilation | Interprets | False | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Acidotic hyperventilation | Interprets | False | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Hyperventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 1 | 
| Impaired gas exchange | Interprets | False | Ventilation, function | Inferred relationship | Existential restriction modifier | 1 | 
| Neonatal hypoventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 3 | 
| Impaired spontaneous ventilation | Associated function | False | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Impaired spontaneous ventilation | Interprets | False | Ventilation, function | Inferred relationship | Existential restriction modifier | 1 | 
| Primary alveolar hypoventilation | Interprets | False | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Congenital central hypoventilation | Interprets | False | Ventilation, function | Inferred relationship | Existential restriction modifier |  | 
| Acidotic hyperventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Primary alveolar hypoventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| On examination - hyperventilating | Interprets | False | Ventilation, function | Inferred relationship | Existential restriction modifier | 4 | 
| Intermittent hyperventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Sleep hypoventilation due to lower airway obstruction | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 3 | 
| Hypoventilation during sleep due to neuromuscular disorder | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Mixed obstructive and restrictive ventilatory defect | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Impaired spontaneous ventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 1 | 
| Impaired gas exchange | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 1 | 
| Sleep hypoventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Obstructive ventilatory defect | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Sleep-related hypoventilation caused by substance | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Extreme obesity with alveolar hypoventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 2 | 
| Idiopathic sleep related non-obstructive alveolar hypoventilation | Interprets | True | Ventilation, function | Inferred relationship | Existential restriction modifier | 3 | 
| Obstructive ventilatory defect | Interprets | False | Ventilation, function | Inferred relationship | Existential restriction modifier |  |