Observations are a central element in healthcare, used to support diagnosis, monitor progress, determine baselines and patterns and even capture demographic characteristics. Most observations are simple name/value pair assertions with some metadata, but some observations group other observations together logically, or even are multi-component observations. Note that the DiagnosticReport resource provides a clinical or workflow context for a set of observations and the Observation resource is referenced by DiagnosticReport to represent laboratory, imaging, and other clinical and diagnostic data to form a complete report.

Uses for the Observation resource include:

  • Vital signs such as body weight, blood pressure, and temperature
  • Laboratory Data such as blood glucose, or an estimated GFR
  • Imaging results of a quantative nature such as bone density or fetal measurements
  • Clinical Findings such as abdominal tenderness
  • Device measurements such as EKG data or Pulse Oximetry data
  • Clinical assessment tools such as APGAR or a Glasgow Coma Score
  • Personal characteristics: such as eye-color
  • Social history including tobacco use, family support, or cognitive status
  • Core characteristics like pregnancy status, or a death assertion

There are three US Core Implementation Guide profiles for this resource:
Laboratory Results
Vital Signs
Smoking Status

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