| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Respiratory gas monitor | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Pneumotachograph | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Mask | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Nasal prongs | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Ventilator equipment | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Breathing circuit equipment | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Nebulizer | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Endobronchial blocker | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Oxygen tent, device | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Continuing positive airway pressure unit, device | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Nasal oxygen catheter, device | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Airway device | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Household humidifier, device | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Hyperbaric chamber, device | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Ambu bag | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Pressure support ventilator | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Volume support ventilator | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Self-contained breathing apparatus | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Supplied-air respirator | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Air-purifying respirator | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Oxygen administration kit, sterile | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Chest percussor | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Airway secretion-clearing system | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Non-rebreathing valve, reusable | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Respiratory humidifier | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Heat/moisture exchanger, reusable | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Nebulizing system tubing set | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Mobile medical gas system emergency supply | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Oxygen administration kit, non-sterile | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Inhalation-therapy sodium chloride air purifier | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Non-rebreathing valve, single-use | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Dry-heat humidifier disinfection tube | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Aerosol inhalation monitoring system | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Heat/moisture exchanger, single-use | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Airway temperature monitoring system | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Heat/moisture exchanger insertable filter | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Nebulizing system delivery set, reusable | Is a | False | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Respiratory device noise reducer | Is a | True | Respiratory equipment | Inferred relationship | Existential restriction modifier |  | 
| Management of respiratory device | Procedure device | True | Respiratory equipment | Inferred relationship | Existential restriction modifier | 1 |