The minute ventilation increases as PaO2 decreases. Regarding PaCO2, it is mediated over a few seconds by peripheral chemoreceptors. arterial oxygenation, unlike PaCO2, has little impact on cerebral chemoreceptors.
The partial pressure of oxygen, or PO2, measures how much dissolved oxygen gas is present in the blood. It essentially assesses how well the lungs are able to draw oxygen from the air into the bloodstream. Increased pO2 levels are related to: increased oxygen content of the air being breathed.
The patient is well oxygenated if pO2 and SaO2 values are normal or slightly increased; To identify whether acidosis or alkalosis is present, take note of the pH level. A pH of 7.35 and a pH of >7.45 suggest acidosis and alkalosis, respectively.
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