The gold standard measurement of oxygenation and ventilation in medicine before the advent of pulse oximetry and capnography was the ____.

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Arterial blood gas (ABG) is the gold standard for measuring oxygenation and ventilation in medicine. ABG involves drawing a blood sample from an artery and measuring several parameters, including oxygen and carbon dioxide levels, pH, and bicarbonate levels. ABG provides accurate and immediate results, but it is an invasive procedure and requires special training and equipment. Co-oximetry is a specific type of blood gas analysis that measures the different forms of hemoglobin in the blood, but it is not a gold standard for oxygenation and ventilation. Intubation is a procedure in which a tube is inserted into the airway to assist with breathing, and renal blood gas is a test that measures various parameters in the blood related to kidney function.

The Gold Standard Measurement of Oxygenation and Ventilation in Medicine