# Ví dụ: Sinh hiệu — SpO2 94% (Thấp, cần theo dõi) - Bộ Hướng dẫn Triển khai Core FHIR cho Việt Nam v0.5.0

## Ví dụ Observation: Ví dụ: Sinh hiệu — SpO2 94% (Thấp, cần theo dõi)

Profile: [SpO2 VN Core — VN Core Observation SpO2 Profile](StructureDefinition-vn-core-observation-spo2.md)

**status**: Final

**category**: Vital Signs

**code**: Bão hòa oxy mao mạch (SpO2)

**subject**: [Nguyễn Văn An](Patient-ExamplePatientNguyenVanAn.md)

**encounter**: [Encounter: extension = Khám chữa bệnh ban đầu; status = finished; class = ambulatory (ActCode#AMB); period = 2026-03-19 08:30:00+0700 --> 2026-03-19 11:00:00+0700; reasonCode = ](Encounter-ExampleEncounterOutpatient.md)

**effective**: 2026-04-20 08:00:00+0700

**performer**: [BS CKII Nguyễn Thị Lan](Practitioner-ExamplePractitionerBSCKII.md)

**value**: 94 % (Details: UCUM code% = '%')

**interpretation**: Low

**note**: 

> 

SpO2 94% — dưới ngưỡng bình thường. Cần theo dõi sát, cân nhắc thở oxy nếu SpO2 < 92% hoặc có triệu chứng khó thở.


### ReferenceRanges

| | | | |
| :--- | :--- | :--- | :--- |
| - | **Low** | **High** | **Text** |
| * | 95 % (Details: UCUM code% = '%') | 100 % (Details: UCUM code% = '%') | 95–100% (bình thường) |



## Resource Content

```json
{
  "resourceType" : "Observation",
  "id" : "ExampleObservationVitalSpO2",
  "meta" : {
    "profile" : ["http://fhir.hl7.org.vn/core/StructureDefinition/vn-core-observation-spo2"]
  },
  "status" : "final",
  "category" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
      "code" : "vital-signs",
      "display" : "Vital Signs"
    }]
  }],
  "code" : {
    "coding" : [{
      "system" : "http://loinc.org",
      "code" : "2708-6",
      "display" : "Oxygen saturation in Arterial blood"
    }],
    "text" : "Bão hòa oxy mao mạch (SpO2)"
  },
  "subject" : {
    "reference" : "Patient/ExamplePatientNguyenVanAn",
    "display" : "Nguyễn Văn An"
  },
  "encounter" : {
    "reference" : "Encounter/ExampleEncounterOutpatient"
  },
  "effectiveDateTime" : "2026-04-20T08:00:00+07:00",
  "performer" : [{
    "reference" : "Practitioner/ExamplePractitionerBSCKII",
    "display" : "BS CKII Nguyễn Thị Lan"
  }],
  "valueQuantity" : {
    "value" : 94,
    "unit" : "%",
    "system" : "http://unitsofmeasure.org",
    "code" : "%"
  },
  "interpretation" : [{
    "coding" : [{
      "system" : "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
      "code" : "L",
      "display" : "Low"
    }]
  }],
  "note" : [{
    "text" : "SpO2 94% — dưới ngưỡng bình thường. Cần theo dõi sát, cân nhắc thở oxy nếu SpO2 < 92% hoặc có triệu chứng khó thở."
  }],
  "referenceRange" : [{
    "low" : {
      "value" : 95,
      "unit" : "%",
      "system" : "http://unitsofmeasure.org",
      "code" : "%"
    },
    "high" : {
      "value" : 100,
      "unit" : "%",
      "system" : "http://unitsofmeasure.org",
      "code" : "%"
    },
    "text" : "95–100% (bình thường)"
  }]
}

```
