Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jul 2007. Module: SNOMED CT core
Descriptions:
| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Nitrous oxide and oxygen gas analgesia in labor (procedure) | Is a | Nitrous oxide and oxygen gas analgesia (procedure) | true | Inferred relationship | Some | ||
| Nitrous oxide and oxygen gas analgesia in labor (procedure) | Is a | analgesie met gas en lucht durante partu | false | Inferred relationship | Some | ||
| Nitrous oxide and oxygen gas analgesia in labor (procedure) | Direct substance | Analgesic (substance) | false | Inferred relationship | Some | 1 | |
| Nitrous oxide and oxygen gas analgesia in labor (procedure) | Method | Introduction of substance | false | Inferred relationship | Some | 1 | |
| Nitrous oxide and oxygen gas analgesia in labor (procedure) | Direct substance | Analgesic (substance) | false | Inferred relationship | Some | 1 | |
| Nitrous oxide and oxygen gas analgesia in labor (procedure) | Method | Administration - action | false | Inferred relationship | Some | 1 | |
| Nitrous oxide and oxygen gas analgesia in labor (procedure) | Method | Administration - action | true | Inferred relationship | Some | 1 | |
| Nitrous oxide and oxygen gas analgesia in labor (procedure) | Direct substance | Analgesic (substance) | true | Inferred relationship | Some | 1 | |
| Nitrous oxide and oxygen gas analgesia in labor (procedure) | Is a | Analgesia in labor (procedure) | true | Inferred relationship | Some | 
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
Reference Sets
Dutch obstetric procedures simple reference set