| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Blood gas/pH analyzer, device | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Breath analyzer | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Anesthetic agent gas monitor, multiple | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Anesthetic agent gas monitor, single | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Enclosed-atmosphere inspired oxygen monitor, line-powered | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary function analysis system, adult | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Enclosed-atmosphere inspired oxygen monitor, battery-powered | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Carbon dioxide sensor cable | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Airway pressure/oxygen monitor | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Gas analyzer tester | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Laboratory incubator carbon dioxide analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary function analysis system, pediatric | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Nitrogen exhaled-gas-sample analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Pneumatic line tester, battery-powered | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Pneumatic line tester, line-powered | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Ventilator tester, line-powered | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Ventilator test system | Is a | False | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Neon gas analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Argon gas analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Nitrous oxide analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Nitrogen monoxide analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Medical gas pipeline system automatic outlet analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Multiple gas analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Ethylene oxide monitor | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Ethylene oxide analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  | 
| Nitrogen dioxide analyzer | Is a | True | Gas analyzer | Inferred relationship | Existential restriction modifier |  |