A patient is diagnosed with a low iron count. The nurse realizes that this patient might demonstrate signs of which of what health problem?
1. increased carbon dioxide in the blood
2. nausea
3. anxiety
4. poor tissue oxygenation
Correct Answer: 4
Oxygen is carried in the blood either bound to hemoglobin or dissolved in the plasma. Oxygen is not very soluble in water, so almost all oxygen that enters the blood from the respiratory system is carried to the cells of the body by hemoglobin. Each hemoglobin molecule is made of four polypeptide chains, and each chain is bound to an iron-containing heme group. The iron groups are the binding sites for oxygen; each hemoglobin molecule can bind with four molecules of oxygen. A low iron count is not generally associated with increased carbon dioxide in the blood, nausea, or anxiety.
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