What is the correct response when there is a normal PaCO2 level in pregnant women?

When considering the physiological changes that occur during pregnancy, a normal PaCO2 level is indeed expected and indicates normal physiology. Pregnant women typically experience a respiratory alkalosis due to hyperventilation, aiming to increase oxygen delivery to the fetus and rid the body of carbon dioxide more efficiently. As such, a normal PaCO2 in this population suggests that the body is functioning properly in response to these changes, rather than indicating any kind of ventilatory failure.

Understanding this physiological adaptation is crucial, as anything outside of the expected range—such as an elevated PaCO2—may warrant further investigation to ensure that there is no underlying issue affecting respiration. Normal values, therefore, guide clinicians in assessing whether the maternal and fetal conditions are stable and healthy.