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The 15 pages that link to Arterial blood gas test, each with the reason it gives.

• Pulse oximetryCompared with: Unlike pulse oximetry, it directly measures arterial oxygen partial pressure and can assess blood chemistry.

• Mechanical ventilationRelated: Its results help assess whether ventilation is correcting gas-exchange problems.

• Lactic acidosisRelated: It establishes acidemia and helps distinguish metabolic from respiratory contributions.

• Pulmonary edemaRelated: It quantifies gas-exchange failure and helps assess respiratory severity.

• Oxygen therapyRelated: It directly measures arterial oxygen and can clarify what pulse oximetry cannot.

• ArteryRelated: An arterial sample reports gas exchange and acid–base status directly.

• Respiratory failureRelated: It helps identify oxygenation failure, carbon-dioxide retention, and acid-base disturbance.

• Ventilation–perfusion mismatchRelated: It measures the hypoxemia that mismatch can produce.

• Pulmonary function testingCompared with: It measures gas exchange directly in blood, unlike most pulmonary function tests.

• HyperventilationRelated: It can demonstrate low PaCO₂ and assess the associated pH change.

• Near-infrared spectroscopyCompared with: It gives direct blood-gas measurements rather than a continuous local tissue estimate.

• PulmonologyRelated: It shows how well the lungs oxygenate blood and remove carbon dioxide.

• Cerebral hypoxiaRelated: It quantifies blood oxygenation when suspected hypoxia requires precise assessment.

• Circulatory and Respiratory Physiological PhenomenaRelated: Its measurements assess gas exchange and the respiratory contribution to blood pH.

• Shortness of breathRelated: It reveals gas-exchange or ventilation problems that may accompany acute dyspnea.