Pulmonology Book

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Oxygen SaturationAka: O2 Sat

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  1. See Also
    1. Arterial Blood Gas
  2. Factors reducing O2 Sat reliability and accuracy
    1. Reduced blood flow
      1. Vasoconstriction
      2. Hypotension
      3. Blood Pressure cuff on arm with sensor
      4. Hypothermia
    2. Severe Anemia
    3. Carboxyhemoglobin or Methemoglobin
    4. Intense Ambient lighting
  3. Oxygen Saturation to PaO2 Relationship
    1. Non-Shifted Oxygen Saturation
      1. 100%: 90 mmHg PaO2
      2. 90%: 60 mmHg PaO2
      3. 60%: 30 mmHg PaO2
      4. 50%: 27 mmHg PaO2
    2. Mnemonic:
      1. 30-60%
      2. 60-90%
      3. 40-75%
  4. Shifted Oxygen Saturation Curve
    1. Left Shift (Same O2 Sat implies lower PaO2)
      1. Increased pH
      2. Decreased Temperature
      3. Decreased PaCO2
      4. Decreased 2,3-dpg
    2. Right Shift (Same O2 Sat implies higher PaO2)
      1. Increased Temperature
      2. Increased PaCO2
      3. Increased 2,3-dpg
      4. Decreased pH

Oxygen saturation measurement (C0523807)

Definition (MSH)The determination of oxygen-hemoglobin saturation of blood either by withdrawing a sample and passing it through a classical photoelectric oximeter or by electrodes attached to some translucent part of the body like finger, earlobe, or skin fold. It includes non-invasive oxygen monitoring by pulse oximetry.
Definition (CSP)determination of oxygen-hemoglobin saturation of blood either by withdrawing a sample and passing it through a classical photoelectric oximeter or by electrodes attached to some translucent part of the body like finger, earlobe, or skin fold; includes non-invasive oxygen monitoring by pulse oximetry.
Definition (NCI)The determination of oxygen-hemoglobin saturation of blood either by withdrawing a sample and passing it through a classical photoelectric oximeter or by electrodes attached to some translucent part of the body like finger, earlobe, or skin fold. It includes non-invasive oxygen monitoring by pulse oximetry.
ConceptsDiagnostic Procedure (T060)
EnglishBlood Oxygen Saturation, Haemoglobin saturation measurement, Hemoglobin Saturation, Hemoglobin Saturation Measurement, O2 Saturation, Oximetries, Oximetry, Oxygen content measurement, Oxygen Saturation, Oxygen saturation measurement, oxymetry
Spanishmedición de saturación de hemoglobina, medición de saturación de oxígeno, medición del contenido de oxígeno, medicion de saturacion de hemoglobina, medicion de saturacion de oxigeno, medicion del contenido de oxigeno, oximetría, oximetria
CreditsDerived from the NIH UMLS (Unified Medical Language System)



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