Certified Nurses Operating Room (CNOR) Practice Exam

The recommended hemoglobin (HGB) and hematocrit (HCT) values for a healthy adult are indeed best represented by the range of 12-16 grams per deciliter for hemoglobin and 38-47% for hematocrit. Hemoglobin is the protein in red blood cells responsible for carrying oxygen, and its levels can reflect the body’s ability to deliver oxygen to tissues. Hematocrit measures the percentage of blood volume that is made up of red blood cells, indicating the proportion of blood that is solid versus liquid.

Normal values can vary slightly based on factors such as age, sex, and altitude, but the specified ranges encompass the values commonly observed in a healthy adult population. Therefore, selecting this option reflects an understanding of standard laboratory reference ranges used in clinical settings to assess and monitor a patient’s health, particularly in relation to anemia or polycythemia.

The other ranges listed are not within the accepted normal limits for healthy adults and could suggest either a state of disease or an incorrect understanding of physiological norms.