Free AAMA Certified Medical Assistant (CMA) Practice Question

A pulse oximeter is designed to primarily measure the oxygen saturation of the blood, which is the percentage of hemoglobin that is bound with oxygen in the blood. It is an important reading as it provides insights into a patient's respiratory and cardiovascular health. Oxygen saturation levels can indicate various conditions, such as hypoxemia. It is a vital piece of data used to determine if a patient requires additional oxygen therapy or other interventions. Other options listed might sound plausible, but they are not the primary measurements obtained by a pulse oximeter.