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Measurement and Monitoring

Terms to Approach

External
Procedures performed directly on the skin or mucous membrane and procedures performed indirectly by the application of external force through the skin or mucous membrane
Open
Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure
Percutaneous
Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure
Percutaneous Endoscopic
Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure
Via Natural or Artificial Opening
Entry of instrumentation through a natural or artificial external opening to reach the site of the procedure
Via Natural or Artificial Opening Endoscopic
Entry of instrumentation through a natural or artificial external opening to reach and visualize the site of the procedure